SEC Info - Cornerstone OnDemand Inc. - ‘10-K’ for 12/31/20

SEC Info℠

Home

My Interests

Help

Please Sign In

Cornerstone OnDemand Inc. – ‘10-K’ for 12/31/20 – ‘JSON’

On: Monday, 2/22/21, at 4:02pm ET · For: 12/31/20 · Accession #: 1401680-21-11 · File #: 1-35098

Previous ‘10-K’: ‘10-K’ on 2/25/20 for 12/31/19 · Latest ‘10-K’: This Filing · 22 References:

  As Of               Filer                 Filing    For·On·As Docs:Size

 2/22/21  Cornerstone OnDemand Inc.         10-K       12/31/20  122:11M

Annual Report — Form 10-K
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   1.38M 
 2: EX-4.1      Instrument Defining the Rights of Security Holders  HTML     41K 
 3: EX-10.25    Material Contract                                   HTML     34K 
 4: EX-21.1     Subsidiaries List                                   HTML     32K 
 5: EX-23.1     Consent of Expert or Counsel                        HTML     31K 
 6: EX-31.1     Certification -- §302 - SOA'02                      HTML     37K 
 7: EX-31.2     Certification -- §302 - SOA'02                      HTML     37K 
 8: EX-32.1     Certification -- §906 - SOA'02                      HTML     32K 
 9: EX-32.2     Certification -- §906 - SOA'02                      HTML     32K 
16: R1          Cover                                               HTML     97K 
17: R2          Consolidated Balance Sheets                         HTML    135K 
18: R3          Consolidated Balance Sheets (Parenthetical)         HTML     33K 
19: R4          Consolidated Statements of Operations               HTML     93K 
20: R5          Consolidated Statements of Comprehensive Loss       HTML     58K 
21: R6          Consolidated Statements of Changes in               HTML     99K 
                Stockholders? Equity                                             
22: R7          Consolidated Statements of Cash Flows               HTML    145K 
23: R8          Organization                                        HTML     37K 
24: R9          Summary of Significant Accounting Policies          HTML    101K 
25: R10         Business Combinations                               HTML     86K 
26: R11         Debt                                                HTML     66K 
27: R12         Net Loss Per Share                                  HTML     52K 
28: R13         Cash and Investments                                HTML     91K 
29: R14         Intangible Assets and Goodwill                      HTML     69K 
30: R15         Restructuring                                       HTML     42K 
31: R16         Other Balance Sheet Amounts                         HTML     54K 
32: R17         Fair Value of Financial Instruments                 HTML     88K 
33: R18         Stockholders? Equity                                HTML     41K 
34: R19         Stock-Based Awards                                  HTML    107K 
35: R20         Income Taxes                                        HTML    120K 
36: R21         Commitments and Contingencies                       HTML     38K 
37: R22         Leases                                              HTML     55K 
38: R23         Deferred Revenue and Remaining Performance          HTML     38K 
                Obligations                                                      
39: R24         401(K) Savings Plan                                 HTML     38K 
40: R25         Segment and Geographic Information                  HTML     62K 
41: R26         Related Party Transactions                          HTML     35K 
42: R27         Summary of Significant Accounting Policies          HTML    157K 
                (Policies)                                                       
43: R28         Summary of Significant Accounting Policies          HTML     42K 
                (Tables)                                                         
44: R29         Business Combinations (Tables)                      HTML     83K 
45: R30         Debt (Tables)                                       HTML     59K 
46: R31         Net Loss Per Share (Tables)                         HTML     53K 
47: R32         Cash and Investments (Tables)                       HTML     94K 
48: R33         Intangible Assets and Goodwill (Tables)             HTML     72K 
49: R34         Restructuring (Tables)                              HTML     42K 
50: R35         Other Balance Sheet Amounts (Tables)                HTML     54K 
51: R36         Fair Value of Financial Instruments (Tables)        HTML     87K 
52: R37         Stockholders? Equity (Tables)                       HTML     38K 
53: R38         Stock-Based Awards (Tables)                         HTML    112K 
54: R39         Income Taxes (Tables)                               HTML    123K 
55: R40         Leases (Tables)                                     HTML     61K 
56: R41         Segment and Geographic Information (Tables)         HTML     61K 
57: R42         ORGANIZATION - Narrative (Details)                  HTML     34K 
58: R43         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     33K 
                Advertising (Details)                                            
59: R44         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     34K 
                Share-Based Compensation (Details)                               
60: R45         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     33K 
                Capitalized Software Costs (Details)                             
61: R46         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     42K 
                Allowance for Credit Losses (Details)                            
62: R47         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     37K 
                Property and Equipment (Details)                                 
63: R48         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     37K 
                Impairment, Intangible Assets, and Goodwill                      
                (Details)                                                        
64: R49         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     47K 
                Convertible Notes (Details)                                      
65: R50         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     36K 
                Foreign Currency Transactions and Translation                    
                (Details)                                                        
66: R51         BUSINESS COMBINATIONS - Additional Information      HTML     73K 
                (Details)                                                        
67: R52         BUSINESS COMBINATIONS - Assets Acquired and         HTML     90K 
                Liabilities assumed (Details)                                    
68: R53         BUSINESS COMBINATIONS - Identifiable Intangible     HTML     51K 
                Assets (Details)                                                 
69: R54         BUSINESS COMBINATIONS - Pro Forma Information       HTML     37K 
                (Details)                                                        
70: R55         BUSINESS COMBINATIONS - Allocation of Purchase      HTML     55K 
                Price (Details)                                                  
71: R56         DEBT - Additional Information (Detail)              HTML    103K 
72: R57         DEBT - Summary of Net Carrying Amount of Debt       HTML     47K 
                (Details)                                                        
73: R58         DEBT - Schedule of Interest Expense Recognized      HTML     46K 
                (Details)                                                        
74: R59         NET LOSS PER SHARE - Basic and Diluted Loss Per     HTML     44K 
                Share (Details)                                                  
75: R60         NET LOSS PER SHARE - Anti-dilutive Shares Excluded  HTML     46K 
                From Calculation (Details)                                       
76: R61         CASH AND INVESTMENTS - Schedule of Cash, Cash       HTML    101K 
                Equivalents, and Investments (Details)                           
77: R62         CASH AND INVESTMENTS - Long-Term Investments        HTML     40K 
                (Details)                                                        
78: R63         CASH AND INVESTMENTS - Non-Marketable Investments   HTML     38K 
                (Details)                                                        
79: R64         INTANGIBLE ASSETS AND GOODWILL - Gross Carrying     HTML     57K 
                Amount and Accumulated Amortization of                           
                Finite-lived Intangible Assets (Details)                         
80: R65         INTANGIBLE ASSETS AND GOODWILL - Additional         HTML     37K 
                Information (Details)                                            
81: R66         INTANGIBLE ASSETS AND GOODWILL - Estimated          HTML     48K 
                Remaining Intangible Asset Amortization (Details)                
82: R67         INTANGIBLE ASSETS AND GOODWILL - Goodwill           HTML     41K 
                (Details)                                                        
83: R68         Restructuring (Details)                             HTML     54K 
84: R69         OTHER BALANCE SHEET AMOUNTS - Property and          HTML     59K 
                Equipment (Details)                                              
85: R70         OTHER BALANCE SHEET AMOUNTS - Narrative (Details)   HTML     41K 
86: R71         OTHER BALANCE SHEET AMOUNTS - Accrued Expenses      HTML     45K 
                (Details)                                                        
87: R72         FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of    HTML     88K 
                Asset and Liabilities Measured at Fair Value                     
                (Detail)                                                         
88: R73         FAIR VALUE OF FINANCIAL INSTRUMENTS - Additional    HTML     52K 
                Information (Detail)                                             
89: R74         FAIR VALUE OF FINANCIAL INSTRUMENTS - Income for    HTML     41K 
                Derivative Instruments (Details)                                 
90: R75         FAIR VALUE OF FINANCIAL INSTRUMENTS - Derivative    HTML     41K 
                Liabilities (Details)                                            
91: R76         Stockholders? Equity (Details)                      HTML     55K 
92: R77         Stockholders? Equity - Share Repurchase Activity    HTML     38K 
                (Details)                                                        
93: R78         STOCK-BASED AWARDS - Narrative (Details)            HTML     91K 
94: R79         STOCK-BASED AWARDS - Summary of Stock Option        HTML     80K 
                Activity (Details)                                               
95: R80         STOCK-BASED AWARDS - Restricted Stock and           HTML     64K 
                Performance-Based Stock Units (Details)                          
96: R81         STOCK-BASED AWARDS - ESPP Activity (Details)        HTML     39K 
97: R82         STOCK-BASED AWARDS - Stock Option Pricing Model     HTML     53K 
                (Details)                                                        
98: R83         STOCK-BASED AWARDS - Schedule of Stock-Based        HTML     63K 
                Compensation Expense (Details)                                   
99: R84         INCOME TAXES - Components of Income Before Taxes    HTML     40K 
                (Details)                                                        
100: R85         INCOME TAXES - Components of Income Tax Provision   HTML     60K  
                (Details)                                                        
101: R86         INCOME TAXES - Components of Effective Income Tax   HTML     58K  
                Reconciliation (Details)                                         
102: R87         INCOME TAXES - Additional Information (Details)     HTML     47K  
103: R88         INCOME TAXES - Components of Deferred Tax Assets    HTML     72K  
                and Liabilities (Details)                                        
104: R89         INCOME TAXES - Reconciliation of Unrecognized Tax   HTML     43K  
                Benefits (Details)                                               
105: R90         Commitments and Contingencies (Details)             HTML     40K  
106: R91         LEASES - Narrative (Details)                        HTML     38K  
107: R92         LEASES - Components of Lease Expense (Details)      HTML     38K  
108: R93         LEASES - Supplemental Cash Flow Information         HTML     36K  
                (Details)                                                        
109: R94         LEASES - Supplemental Balance Sheet Information of  HTML     36K  
                Operating Leases (Details) (Details)                             
110: R95         LEASES - Maturities of Operating Lease Liabilities  HTML     51K  
                (Details)                                                        
111: R96         Deferred Revenue and Remaining Performance          HTML     43K  
                Obligations (Details)                                            
112: R97         401(K) Savings Plan (Details)                       HTML     39K  
113: R98         Segment and Geographic Information (Details)        HTML     34K  
114: R99         Segment and Geographic Information - Sources of     HTML     41K  
                Revenue (Details)                                                
115: R100        SEGMENT AND GEOGRAPHIC INFORMATION - Revenue by     HTML     41K  
                Geographic Region (Details)                                      
116: R101        SEGMENT AND GEOGRAPHIC INFORMATION - Property and   HTML     42K  
                Equipment by Geographic Region (Details)                         
117: R102        Related Party Transactions (Details)                HTML     33K  
118: R9999       Uncategorized Items - csod-20201231.htm             HTML     37K  
120: XML         IDEA XML File -- Filing Summary                      XML    223K  
15: XML         XBRL Instance -- csod-20201231_htm                   XML   2.79M 
119: EXCEL       IDEA Workbook of Financial Reports                  XLSX    149K  
11: EX-101.CAL  XBRL Calculations -- csod-20201231_cal               XML    377K 
12: EX-101.DEF  XBRL Definitions -- csod-20201231_def                XML    820K 
13: EX-101.LAB  XBRL Labels -- csod-20201231_lab                     XML   2.13M 
14: EX-101.PRE  XBRL Presentations -- csod-20201231_pre              XML   1.35M 
10: EX-101.SCH  XBRL Schema -- csod-20201231                         XSD    207K 
121: JSON        XBRL Instance as JSON Data -- MetaLinks              519±   793K  
122: ZIP         XBRL Zipped Folder -- 0001401680-21-000011-xbrl      Zip    566K

‘JSON’ — XBRL Instance as JSON Data — MetaLinks

This File is an XBRL Instance as JavaScript Object Notation (JSON) Data.

{
"instance":  {
    "csod-20201231.htm":  {
        "axisCustom":  0,
        "axisStandard":  28,
        "contextCount":  297,
        "dts":  {
            "calculationLink":  {
                "local":  [
                    "csod-20201231_cal.xml"
                    ]
                },
            "definitionLink":  {
                "local":  [
                    "csod-20201231_def.xml"
                    ],
                "remote":  [
                    "http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-eedm-def-2020-01-31.xml",
                    "http://xbrl.fasb.org/srt/2020/elts/srt-eedm1-def-2020-01-31.xml"
                    ]
                },
            "inline":  {
                "local":  [
                    "csod-20201231.htm"
                    ]
                },
            "labelLink":  {
                "local":  [
                    "csod-20201231_lab.xml"
                    ],
                "remote":  [
                    "http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-doc-2020-01-31.xml",
                    "https://xbrl.sec.gov/dei/2020/dei-doc-2020-01-31.xml"
                    ]
                },
            "presentationLink":  {
                "local":  [
                    "csod-20201231_pre.xml"
                    ]
                },
            "referenceLink":  {
                "remote":  [
                    "http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-ref-2020-01-31.xml",
                    "https://xbrl.sec.gov/dei/2020/dei-ref-2020-01-31.xml"
                    ]
                },
            "schema":  {
                "local":  [
                    "csod-20201231.xsd"
                    ],
                "remote":  [
                    "http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd",
                    "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
                    "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd",
                    "http://www.xbrl.org/2003/xl-2003-12-31.xsd",
                    "http://www.xbrl.org/2003/xlink-2003-12-31.xsd",
                    "http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd",
                    "http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd",
                    "http://www.xbrl.org/2005/xbrldt-2005.xsd",
                    "http://www.xbrl.org/2006/ref-2006-02-27.xsd",
                    "http://xbrl.fasb.org/srt/2020/elts/srt-types-2020-01-31.xsd",
                    "http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd",
                    "http://xbrl.fasb.org/us-gaap/2020/elts/us-roles-2020-01-31.xsd",
                    "http://xbrl.fasb.org/srt/2020/elts/srt-roles-2020-01-31.xsd",
                    "https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd",
                    "http://xbrl.fasb.org/us-gaap/2020/elts/us-types-2020-01-31.xsd",
                    "https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd",
                    "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd",
                    "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd",
                    "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd",
                    "http://xbrl.fasb.org/us-gaap/2020/elts/us-parts-codification-2020-01-31.xsd",
                    "http://www.xbrl.org/lrr/role/deprecated-2009-12-16.xsd"
                    ]
                }
            },
        "elementCount":  717,
        "entityCount":  1,
        "hidden":  {
            "http://fasb.org/us-gaap/2020-01-31":  5,
            "http://www.cornerstoneondemand.com/20201231":  1,
            "http://xbrl.sec.gov/dei/2020-01-31":  4,
            "total":  10
            },
        "keyCustom":  47,
        "keyStandard":  498,
        "memberCustom":  20,
        "memberStandard":  57,
        "nsprefix":  "csod",
        "nsuri":  "http://www.cornerstoneondemand.com/20201231",
        "report":  {
            "R1":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "dei:DocumentType",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "document",
                "isDefault":  "true",
                "longName":  "0001001 - Document - COVER",
                "role":  "http://www.cornerstoneondemand.com/role/COVER",
                "shortName":  "COVER",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "dei:DocumentType",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R10":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:BusinessCombinationDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2114103 - Disclosure - BUSINESS COMBINATIONS",
                "role":  "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONS",
                "shortName":  "BUSINESS COMBINATIONS",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:BusinessCombinationDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R100":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2492459 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION - Revenue by Geographic Region (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONRevenuebyGeographicRegionDetails",
                "shortName":  "SEGMENT AND GEOGRAPHIC INFORMATION - Revenue by Geographic Region (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "ib316552cbb5d4e54b60cde3275157f8e_D20200101-20201231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R101":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:NoncurrentAssets",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2493460 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION - Property and Equipment by Geographic Region (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONPropertyandEquipmentbyGeographicRegionDetails",
                "shortName":  "SEGMENT AND GEOGRAPHIC INFORMATION - Property and Equipment by Geographic Region (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:NoncurrentAssets",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R102":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "csod:ValueOfResourcesDonatedToRelatedParties1",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2495461 - Disclosure - RELATED PARTY TRANSACTIONS (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/RELATEDPARTYTRANSACTIONSDetails",
                "shortName":  "RELATED PARTY TRANSACTIONS (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "csod:ValueOfResourcesDonatedToRelatedParties1",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R11":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DebtDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2121104 - Disclosure - DEBT",
                "role":  "http://www.cornerstoneondemand.com/role/DEBT",
                "shortName":  "DEBT",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DebtDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R12":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:EarningsPerShareTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2126105 - Disclosure - NET LOSS PER SHARE",
                "role":  "http://www.cornerstoneondemand.com/role/NETLOSSPERSHARE",
                "shortName":  "NET LOSS PER SHARE",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:EarningsPerShareTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R13":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2130106 - Disclosure - CASH AND INVESTMENTS",
                "role":  "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTS",
                "shortName":  "CASH AND INVESTMENTS",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R14":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2135107 - Disclosure - INTANGIBLE ASSETS AND GOODWILL",
                "role":  "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILL",
                "shortName":  "INTANGIBLE ASSETS AND GOODWILL",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R15":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RestructuringAndRelatedActivitiesDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2141108 - Disclosure - RESTRUCTURING",
                "role":  "http://www.cornerstoneondemand.com/role/RESTRUCTURING",
                "shortName":  "RESTRUCTURING",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RestructuringAndRelatedActivitiesDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R16":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:SupplementalBalanceSheetDisclosuresTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2144109 - Disclosure - OTHER BALANCE SHEET AMOUNTS",
                "role":  "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTS",
                "shortName":  "OTHER BALANCE SHEET AMOUNTS",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:SupplementalBalanceSheetDisclosuresTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R17":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:FairValueDisclosuresTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2149110 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS",
                "role":  "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTS",
                "shortName":  "FAIR VALUE OF FINANCIAL INSTRUMENTS",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:FairValueDisclosuresTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R18":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2155111 - Disclosure - STOCKHOLDERS\u2019 EQUITY",
                "role":  "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITY",
                "shortName":  "STOCKHOLDERS\u2019 EQUITY",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R19":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2159112 - Disclosure - STOCK-BASED AWARDS",
                "role":  "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDS",
                "shortName":  "STOCK-BASED AWARDS",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R2":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:CashAndCashEquivalentsAtCarryingValue",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "statement",
                "isDefault":  "false",
                "longName":  "1001002 - Statement - CONSOLIDATED BALANCE SHEETS",
                "role":  "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS",
                "shortName":  "CONSOLIDATED BALANCE SHEETS",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:ShortTermInvestments",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R20":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:IncomeTaxDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2167113 - Disclosure - INCOME TAXES",
                "role":  "http://www.cornerstoneondemand.com/role/INCOMETAXES",
                "shortName":  "INCOME TAXES",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:IncomeTaxDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R21":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2175114 - Disclosure - COMMITMENTS AND CONTINGENCIES",
                "role":  "http://www.cornerstoneondemand.com/role/COMMITMENTSANDCONTINGENCIES",
                "shortName":  "COMMITMENTS AND CONTINGENCIES",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R22":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:LesseeOperatingLeasesTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2177115 - Disclosure - LEASES",
                "role":  "http://www.cornerstoneondemand.com/role/LEASES",
                "shortName":  "LEASES",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:LesseeOperatingLeasesTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R23":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RevenueFromContractWithCustomerTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2184116 - Disclosure - DEFERRED REVENUE AND REMAINING PERFORMANCE OBLIGATIONS",
                "role":  "http://www.cornerstoneondemand.com/role/DEFERREDREVENUEANDREMAININGPERFORMANCEOBLIGATIONS",
                "shortName":  "DEFERRED REVENUE AND REMAINING PERFORMANCE OBLIGATIONS",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RevenueFromContractWithCustomerTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R24":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2186117 - Disclosure - 401(K) SAVINGS PLAN",
                "role":  "http://www.cornerstoneondemand.com/role/A401KSAVINGSPLAN",
                "shortName":  "401(K) SAVINGS PLAN",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R25":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:SegmentReportingDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2188118 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION",
                "role":  "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATION",
                "shortName":  "SEGMENT AND GEOGRAPHIC INFORMATION",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:SegmentReportingDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R26":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2194119 - Disclosure - RELATED PARTY TRANSACTIONS",
                "role":  "http://www.cornerstoneondemand.com/role/RELATEDPARTYTRANSACTIONS",
                "shortName":  "RELATED PARTY TRANSACTIONS",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R27":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ConsolidationPolicyTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2204201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)",
                "role":  "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies",
                "shortName":  "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)",
                "subGroupType":  "policies",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ConsolidationPolicyTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R28":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "csod:ScheduleOfAllowanceForDoubtfulAccountsReceivableRollForwardTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2305301 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)",
                "role":  "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESTables",
                "shortName":  "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "csod:ScheduleOfAllowanceForDoubtfulAccountsReceivableRollForwardTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R29":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2315302 - Disclosure - BUSINESS COMBINATIONS (Tables)",
                "role":  "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSTables",
                "shortName":  "BUSINESS COMBINATIONS (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R3":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "us-gaap:CommonStockParOrStatedValuePerShare",
                        "span",
                        "div",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:CommonStockParOrStatedValuePerShare",
                    "reportCount":  1,
                    "unitRef":  "usdPerShare",
                    "xsiNil":  "false"
                    },
                "groupType":  "statement",
                "isDefault":  "false",
                "longName":  "1002003 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)",
                "role":  "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETSParenthetical",
                "shortName":  "CONSOLIDATED BALANCE SHEETS (Parenthetical)",
                "subGroupType":  "parenthetical",
                "uniqueAnchor":  null
                },
            "R30":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ConvertibleDebtTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2322303 - Disclosure - DEBT (Tables)",
                "role":  "http://www.cornerstoneondemand.com/role/DEBTTables",
                "shortName":  "DEBT (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ConvertibleDebtTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R31":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2327304 - Disclosure - NET LOSS PER SHARE (Tables)",
                "role":  "http://www.cornerstoneondemand.com/role/NETLOSSPERSHARETables",
                "shortName":  "NET LOSS PER SHARE (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R32":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2331305 - Disclosure - CASH AND INVESTMENTS (Tables)",
                "role":  "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSTables",
                "shortName":  "CASH AND INVESTMENTS (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R33":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2336306 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Tables)",
                "role":  "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLTables",
                "shortName":  "INTANGIBLE ASSETS AND GOODWILL (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R34":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfRestructuringAndRelatedCostsTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2342307 - Disclosure - RESTRUCTURING (Tables)",
                "role":  "http://www.cornerstoneondemand.com/role/RESTRUCTURINGTables",
                "shortName":  "RESTRUCTURING (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfRestructuringAndRelatedCostsTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R35":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:PropertyPlantAndEquipmentTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2345308 - Disclosure - OTHER BALANCE SHEET AMOUNTS (Tables)",
                "role":  "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSTables",
                "shortName":  "OTHER BALANCE SHEET AMOUNTS (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:PropertyPlantAndEquipmentTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R36":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2350309 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)",
                "role":  "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSTables",
                "shortName":  "FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R37":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "csod:StockRepurchaseProgramTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2356310 - Disclosure - STOCKHOLDERS\u2019 EQUITY (Tables)",
                "role":  "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYTables",
                "shortName":  "STOCKHOLDERS\u2019 EQUITY (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "csod:StockRepurchaseProgramTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R38":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2360311 - Disclosure - STOCK-BASED AWARDS (Tables)",
                "role":  "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSTables",
                "shortName":  "STOCK-BASED AWARDS (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R39":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2368312 - Disclosure - INCOME TAXES (Tables)",
                "role":  "http://www.cornerstoneondemand.com/role/INCOMETAXESTables",
                "shortName":  "INCOME TAXES (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R4":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "statement",
                "isDefault":  "false",
                "longName":  "1003004 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS",
                "role":  "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS",
                "shortName":  "CONSOLIDATED STATEMENTS OF OPERATIONS",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:CostOfGoodsAndServicesSold",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R40":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:LeaseCostTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2378313 - Disclosure - LEASES (Tables)",
                "role":  "http://www.cornerstoneondemand.com/role/LEASESTables",
                "shortName":  "LEASES (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:LeaseCostTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R41":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2389314 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION (Tables)",
                "role":  "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONTables",
                "shortName":  "SEGMENT AND GEOGRAPHIC INFORMATION (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R42":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:NumberOfOperatingSegments",
                    "reportCount":  1,
                    "unitRef":  "segment",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2402401 - Disclosure - ORGANIZATION - Narrative (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/ORGANIZATIONNarrativeDetails",
                "shortName":  "ORGANIZATION - Narrative (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  null
                },
            "R43":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "us-gaap:AdvertisingCostsPolicyTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:AdvertisingExpense",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2406402 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Advertising (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESAdvertisingDetails",
                "shortName":  "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Advertising (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "us-gaap:AdvertisingCostsPolicyTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:AdvertisingExpense",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R44":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2407403 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Share-Based Compensation (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESShareBasedCompensationDetails",
                "shortName":  "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Share-Based Compensation (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R45":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "us-gaap:InternalUseSoftwarePolicy",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "csod:CapitalizedComputerSoftwareForInternalUseEstimatedUsefulLives",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2408404 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Capitalized Software Costs (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESCapitalizedSoftwareCostsDetails",
                "shortName":  "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Capitalized Software Costs (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "us-gaap:InternalUseSoftwarePolicy",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "csod:CapitalizedComputerSoftwareForInternalUseEstimatedUsefulLives",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R46":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "csod:ScheduleOfAllowanceForDoubtfulAccountsReceivableRollForwardTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i244158ba6d574907bd1f20a048373a42_I20191231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:AllowanceForDoubtfulAccountsReceivable",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2409405 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Allowance for Credit Losses (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESAllowanceforCreditLossesDetails",
                "shortName":  "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Allowance for Credit Losses (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "csod:ScheduleOfAllowanceForDoubtfulAccountsReceivableRollForwardTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "ibd3c1a5f4ed84e57a91ebf4905463a90_I20171231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:AllowanceForDoubtfulAccountsReceivable",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R47":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "us-gaap:PropertyPlantAndEquipmentPolicyTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i2eaa5195c3574565b8c591a8d688ffcf_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:PropertyPlantAndEquipmentUsefulLife",
                    "reportCount":  1,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2410406 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPropertyandEquipmentDetails",
                "shortName":  "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  null
                },
            "R48":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "us-gaap:IntangibleAssetsFiniteLivedPolicy",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i2eaa5195c3574565b8c591a8d688ffcf_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:FiniteLivedIntangibleAssetUsefulLife",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2411407 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Impairment, Intangible Assets, and Goodwill (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESImpairmentIntangibleAssetsandGoodwillDetails",
                "shortName":  "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Impairment, Intangible Assets, and Goodwill (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "us-gaap:IntangibleAssetsFiniteLivedPolicy",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i2eaa5195c3574565b8c591a8d688ffcf_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:FiniteLivedIntangibleAssetUsefulLife",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R49":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "ia5d15f9c62324b999dd93ba07e40abed_I20181231",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DebtInstrumentFaceAmount",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2412408 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Convertible Notes (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESConvertibleNotesDetails",
                "shortName":  "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Convertible Notes (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  null
                },
            "R5":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:NetIncomeLoss",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "statement",
                "isDefault":  "false",
                "longName":  "1004005 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS",
                "role":  "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS",
                "shortName":  "CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R50":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "us-gaap:ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "ic34d9ede77f8499b93cdc761cca0c2c6_D20200101-20201231",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ForeignCurrencyTransactionGainLossBeforeTax",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2413409 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Foreign Currency Transactions and Translation (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESForeignCurrencyTransactionsandTranslationDetails",
                "shortName":  "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Foreign Currency Transactions and Translation (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "us-gaap:ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "ic34d9ede77f8499b93cdc761cca0c2c6_D20200101-20201231",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ForeignCurrencyTransactionGainLossBeforeTax",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R51":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:BusinessCombinationAcquisitionRelatedCosts",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2416410 - Disclosure - BUSINESS COMBINATIONS - Additional Information (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                "shortName":  "BUSINESS COMBINATIONS - Additional Information (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "ib43e0ea0494140ac87a0191ca7272eb6_I20200422",
                    "decimals":  "INF",
                    "lang":  "en-US",
                    "name":  "us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "number",
                    "xsiNil":  "false"
                    }
                },
            "R52":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:Goodwill",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2417411 - Disclosure - BUSINESS COMBINATIONS - Assets Acquired and Liabilities assumed (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails",
                "shortName":  "BUSINESS COMBINATIONS - Assets Acquired and Liabilities assumed (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "ix:continuation",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i8c0d3f10a0104e3a9cd0ba7a50c365b4_D20200422-20201231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "csod:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOtherNoncurrentAssets",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R53":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfFiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "ib43e0ea0494140ac87a0191ca7272eb6_I20200422",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2418412 - Disclosure - BUSINESS COMBINATIONS - Identifiable Intangible Assets (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails",
                "shortName":  "BUSINESS COMBINATIONS - Identifiable Intangible Assets (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfFiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "id17541111f984588a031b6e2d8c23260_I20200422",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R54":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "ix:continuation",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i12676663da2649cc8a7691c88e0f9285_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:BusinessAcquisitionsProFormaRevenue",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2419413 - Disclosure - BUSINESS COMBINATIONS - Pro Forma Information (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSProFormaInformationDetails",
                "shortName":  "BUSINESS COMBINATIONS - Pro Forma Information (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "ix:continuation",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i12676663da2649cc8a7691c88e0f9285_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:BusinessAcquisitionsProFormaRevenue",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R55":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:Goodwill",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2420414 - Disclosure - BUSINESS COMBINATIONS - Allocation of Purchase Price (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails",
                "shortName":  "BUSINESS COMBINATIONS - Allocation of Purchase Price (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "ix:continuation",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i1812f8c7fc894ee78c5c1df94d1434d2_I20200124",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R56":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "ib8c5b22c886c499d9f864d762f91e0d4_D20200422-20200422",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2423415 - Disclosure - DEBT - Additional Information (Detail)",
                "role":  "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                "shortName":  "DEBT - Additional Information (Detail)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "ib8c5b22c886c499d9f864d762f91e0d4_D20200422-20200422",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R57":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ConvertibleDebtNoncurrent",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2424416 - Disclosure - DEBT - Summary of Net Carrying Amount of Debt (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/DEBTSummaryofNetCarryingAmountofDebtDetails",
                "shortName":  "DEBT - Summary of Net Carrying Amount of Debt (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ConvertibleDebtTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "idd22eca4cfa24bba862218726b981f2e_I20201231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:DebtInstrumentCarryingAmount",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R58":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "csod:ScheduleOfDebtCostAndInterestExpenseRecognizedTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i6eb07ec390374f4283932e86a5791009_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:InterestExpenseDebtExcludingAmortization",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2425417 - Disclosure - DEBT - Schedule of Interest Expense Recognized (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/DEBTScheduleofInterestExpenseRecognizedDetails",
                "shortName":  "DEBT - Schedule of Interest Expense Recognized (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "csod:ScheduleOfDebtCostAndInterestExpenseRecognizedTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i6eb07ec390374f4283932e86a5791009_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:InterestExpenseDebtExcludingAmortization",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R59":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:NetIncomeLoss",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2428418 - Disclosure - NET LOSS PER SHARE - Basic and Diluted Loss Per Share (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREBasicandDilutedLossPerShareDetails",
                "shortName":  "NET LOSS PER SHARE - Basic and Diluted Loss Per Share (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  null
                },
            "R6":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "ibe5d3ce2ee7b487d831285b60d02c87a_I20171231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:SharesOutstanding",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "shares",
                    "xsiNil":  "false"
                    },
                "groupType":  "statement",
                "isDefault":  "false",
                "longName":  "1005006 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS\u2019 EQUITY",
                "role":  "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
                "shortName":  "CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS\u2019 EQUITY",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "ibe5d3ce2ee7b487d831285b60d02c87a_I20171231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:SharesOutstanding",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "shares",
                    "xsiNil":  "false"
                    }
                },
            "R60":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "ix:continuation",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "shares",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2429419 - Disclosure - NET LOSS PER SHARE - Anti-dilutive Shares Excluded From Calculation (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREAntidilutiveSharesExcludedFromCalculationDetails",
                "shortName":  "NET LOSS PER SHARE - Anti-dilutive Shares Excluded From Calculation (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "ix:continuation",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "shares",
                    "xsiNil":  "false"
                    }
                },
            "R61":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "ix:continuation",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i244158ba6d574907bd1f20a048373a42_I20191231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:Cash",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2432420 - Disclosure - CASH AND INVESTMENTS - Schedule of Cash, Cash Equivalents, and Investments (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails",
                "shortName":  "CASH AND INVESTMENTS - Schedule of Cash, Cash Equivalents, and Investments (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "ix:continuation",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i244158ba6d574907bd1f20a048373a42_I20191231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:Cash",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R62":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:InvestmentTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i54c2d85f65464fad9608e19a2a9de27c_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:AvailableForSaleSecuritiesDebtSecurities",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2433421 - Disclosure - CASH AND INVESTMENTS - Long-Term Investments (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSLongTermInvestmentsDetails",
                "shortName":  "CASH AND INVESTMENTS - Long-Term Investments (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:InvestmentTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i1cfdd1f5b9a546559ec3420f283f9c2f_I20201231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:AvailableForSaleSecuritiesDebtSecurities",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R63":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfSecuritiesOwnedNotReadilyMarketableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:EquitySecuritiesFvNi",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2434422 - Disclosure - CASH AND INVESTMENTS - Non-Marketable Investments (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSNonMarketableInvestmentsDetails",
                "shortName":  "CASH AND INVESTMENTS - Non-Marketable Investments (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfSecuritiesOwnedNotReadilyMarketableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:EquitySecuritiesFvNi",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R64":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "ix:continuation",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:FiniteLivedIntangibleAssetsGross",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2437423 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Gross Carrying Amount and Accumulated Amortization of Finite-lived Intangible Assets (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails",
                "shortName":  "INTANGIBLE ASSETS AND GOODWILL - Gross Carrying Amount and Accumulated Amortization of Finite-lived Intangible Assets (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "ix:continuation",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:FiniteLivedIntangibleAssetsGross",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R65":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:AmortizationOfIntangibleAssets",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2438424 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Additional Information (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLAdditionalInformationDetails",
                "shortName":  "INTANGIBLE ASSETS AND GOODWILL - Additional Information (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:AmortizationOfIntangibleAssets",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R66":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2439425 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Estimated Remaining Intangible Asset Amortization (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLEstimatedRemainingIntangibleAssetAmortizationDetails",
                "shortName":  "INTANGIBLE ASSETS AND GOODWILL - Estimated Remaining Intangible Asset Amortization (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R67":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfGoodwillTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i244158ba6d574907bd1f20a048373a42_I20191231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:Goodwill",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2440426 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Goodwill (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGoodwillDetails",
                "shortName":  "INTANGIBLE ASSETS AND GOODWILL - Goodwill (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfGoodwillTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:GoodwillAcquiredDuringPeriod",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R68":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RestructuringCharges",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2443427 - Disclosure - RESTRUCTURING (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/RESTRUCTURINGDetails",
                "shortName":  "RESTRUCTURING (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfRestructuringAndRelatedCostsTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:SeveranceCosts1",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R69":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:PropertyPlantAndEquipmentTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:PropertyPlantAndEquipmentGross",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2446428 - Disclosure - OTHER BALANCE SHEET AMOUNTS - Property and Equipment (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails",
                "shortName":  "OTHER BALANCE SHEET AMOUNTS - Property and Equipment (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:PropertyPlantAndEquipmentTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:PropertyPlantAndEquipmentGross",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R7":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:NetIncomeLoss",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "statement",
                "isDefault":  "false",
                "longName":  "1006007 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS",
                "role":  "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
                "shortName":  "CONSOLIDATED STATEMENTS OF CASH FLOWS",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:DepreciationDepletionAndAmortization",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R70":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:Depreciation",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2447429 - Disclosure - OTHER BALANCE SHEET AMOUNTS - Narrative (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSNarrativeDetails",
                "shortName":  "OTHER BALANCE SHEET AMOUNTS - Narrative (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:Depreciation",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R71":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:AccruedSalariesCurrent",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2448430 - Disclosure - OTHER BALANCE SHEET AMOUNTS - Accrued Expenses (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSAccruedExpensesDetails",
                "shortName":  "OTHER BALANCE SHEET AMOUNTS - Accrued Expenses (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:AccruedSalariesCurrent",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R72":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:CashAndCashEquivalentsFairValueDisclosure",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2451431 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of Asset and Liabilities Measured at Fair Value (Detail)",
                "role":  "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail",
                "shortName":  "FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of Asset and Liabilities Measured at Fair Value (Detail)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:CashAndCashEquivalentsFairValueDisclosure",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R73":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:MoneyMarketFundsAtCarryingValue",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2452432 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Additional Information (Detail)",
                "role":  "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                "shortName":  "FAIR VALUE OF FINANCIAL INSTRUMENTS - Additional Information (Detail)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:MoneyMarketFundsAtCarryingValue",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R74":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i81bde8243e15472a9f01183416946a10_D20200101-20201231",
                    "decimals":  "-2",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2453433 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Income for Derivative Instruments (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSIncomeforDerivativeInstrumentsDetails",
                "shortName":  "FAIR VALUE OF FINANCIAL INSTRUMENTS - Income for Derivative Instruments (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i81bde8243e15472a9f01183416946a10_D20200101-20201231",
                    "decimals":  "-2",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R75":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "ie94de88899b74c3fb2c91ef82488eb6c_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DerivativeLiabilities",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2454434 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Derivative Liabilities (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSDerivativeLiabilitiesDetails",
                "shortName":  "FAIR VALUE OF FINANCIAL INSTRUMENTS - Derivative Liabilities (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfDerivativeLiabilitiesAtFairValueTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "if8a5d18261d349e7a1ba9993025682f5_I20201231",
                    "decimals":  "-2",
                    "lang":  "en-US",
                    "name":  "us-gaap:DerivativeLiabilities",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R76":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:CommonStockSharesAuthorized",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "shares",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2457435 - Disclosure - STOCKHOLDERS\u2019 EQUITY (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails",
                "shortName":  "STOCKHOLDERS\u2019 EQUITY (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:CommonStockSharesAuthorized",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "shares",
                    "xsiNil":  "false"
                    }
                },
            "R77":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "csod:StockRepurchaseProgramTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:StockRepurchasedDuringPeriodShares",
                    "reportCount":  1,
                    "unitRef":  "shares",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2458436 - Disclosure - STOCKHOLDERS\u2019 EQUITY - Share Repurchase Activity (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYShareRepurchaseActivityDetails",
                "shortName":  "STOCKHOLDERS\u2019 EQUITY - Share Repurchase Activity (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  null
                },
            "R78":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "csod:EmployeeStockPurchasePlanESPPPurchasePricePercentageOfFairMarketValueGrantDate",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "number",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2461437 - Disclosure - STOCK-BASED AWARDS - Narrative (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails",
                "shortName":  "STOCK-BASED AWARDS - Narrative (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "csod:EmployeeStockPurchasePlanESPPPurchasePricePercentageOfFairMarketValueGrantDate",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "number",
                    "xsiNil":  "false"
                    }
                },
            "R79":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i244158ba6d574907bd1f20a048373a42_I20191231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber",
                    "reportCount":  1,
                    "unitRef":  "shares",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2462438 - Disclosure - STOCK-BASED AWARDS - Summary of Stock Option Activity (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails",
                "shortName":  "STOCK-BASED AWARDS - Summary of Stock Option Activity (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "shares",
                    "xsiNil":  "false"
                    }
                },
            "R8":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:NatureOfOperations",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2101101 - Disclosure - ORGANIZATION",
                "role":  "http://www.cornerstoneondemand.com/role/ORGANIZATION",
                "shortName":  "ORGANIZATION",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:NatureOfOperations",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R80":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "ia098a19984e440c0a29347f6a3dbd7a4_I20191231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber",
                    "reportCount":  1,
                    "unitRef":  "shares",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2463439 - Disclosure - STOCK-BASED AWARDS - Restricted Stock and Performance-Based Stock Units (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails",
                "shortName":  "STOCK-BASED AWARDS - Restricted Stock and Performance-Based Stock Units (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i621ec495802c4671ba0d80d296111b2c_D20200101-20201231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "shares",
                    "xsiNil":  "false"
                    }
                },
            "R81":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "0",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans",
                    "reportCount":  1,
                    "unitRef":  "shares",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2464440 - Disclosure - STOCK-BASED AWARDS - ESPP Activity (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSESPPActivityDetails",
                "shortName":  "STOCK-BASED AWARDS - ESPP Activity (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  null
                },
            "R82":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "number",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2465441 - Disclosure - STOCK-BASED AWARDS - Stock Option Pricing Model (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSStockOptionPricingModelDetails",
                "shortName":  "STOCK-BASED AWARDS - Stock Option Pricing Model (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "number",
                    "xsiNil":  "false"
                    }
                },
            "R83":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2466442 - Disclosure - STOCK-BASED AWARDS - Schedule of Stock-Based Compensation Expense (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails",
                "shortName":  "STOCK-BASED AWARDS - Schedule of Stock-Based Compensation Expense (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:AllocatedShareBasedCompensationExpense",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R84":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2469443 - Disclosure - INCOME TAXES - Components of Income Before Taxes (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeBeforeTaxesDetails",
                "shortName":  "INCOME TAXES - Components of Income Before Taxes (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R85":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:CurrentFederalTaxExpenseBenefit",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2470444 - Disclosure - INCOME TAXES - Components of Income Tax Provision (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails",
                "shortName":  "INCOME TAXES - Components of Income Tax Provision (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:CurrentFederalTaxExpenseBenefit",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R86":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2471445 - Disclosure - INCOME TAXES - Components of Effective Income Tax Reconciliation (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails",
                "shortName":  "INCOME TAXES - Components of Effective Income Tax Reconciliation (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R87":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ValuationAllowanceDeferredTaxAssetChangeInAmount",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2472446 - Disclosure - INCOME TAXES - Additional Information (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/INCOMETAXESAdditionalInformationDetails",
                "shortName":  "INCOME TAXES - Additional Information (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ValuationAllowanceDeferredTaxAssetChangeInAmount",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R88":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2473447 - Disclosure - INCOME TAXES - Components of Deferred Tax Assets and Liabilities (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails",
                "shortName":  "INCOME TAXES - Components of Deferred Tax Assets and Liabilities (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R89":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i244158ba6d574907bd1f20a048373a42_I20191231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:UnrecognizedTaxBenefits",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2474448 - Disclosure - INCOME TAXES - Reconciliation of Unrecognized Tax Benefits (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/INCOMETAXESReconciliationofUnrecognizedTaxBenefitsDetails",
                "shortName":  "INCOME TAXES - Reconciliation of Unrecognized Tax Benefits (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "ibd3c1a5f4ed84e57a91ebf4905463a90_I20171231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:UnrecognizedTaxBenefits",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R9":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:SignificantAccountingPoliciesTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2103102 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES",
                "role":  "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIES",
                "shortName":  "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:SignificantAccountingPoliciesTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R90":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i1972af3e53a242979ec214556038360f_D20200301-20200331",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "csod:ContractualObligationTerm",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2476449 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/COMMITMENTSANDCONTINGENCIESDetails",
                "shortName":  "COMMITMENTS AND CONTINGENCIES (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i1972af3e53a242979ec214556038360f_D20200301-20200331",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "csod:ContractualObligationTerm",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R91":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i930a237d19084ee1b46576d9a986dfa7_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "csod:OperatingLeaseRemainingLeaseTerm",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2479450 - Disclosure - LEASES - Narrative (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/LEASESNarrativeDetails",
                "shortName":  "LEASES - Narrative (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i930a237d19084ee1b46576d9a986dfa7_D20200101-20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "csod:OperatingLeaseRemainingLeaseTerm",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R92":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:LeaseCostTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:OperatingLeaseCost",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2480451 - Disclosure - LEASES - Components of Lease Expense (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/LEASESComponentsofLeaseExpenseDetails",
                "shortName":  "LEASES - Components of Lease Expense (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:LeaseCostTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:OperatingLeaseCost",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R93":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "csod:LesseeOperatingLeasesSupplementalCashFlowTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:OperatingLeasePayments",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2481452 - Disclosure - LEASES - Supplemental Cash Flow Information (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/LEASESSupplementalCashFlowInformationDetails",
                "shortName":  "LEASES - Supplemental Cash Flow Information (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "csod:LesseeOperatingLeasesSupplementalCashFlowTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:OperatingLeasePayments",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R94":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "csod:LesseeOperatingLeasesAssetsAndLiabilitiesTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:OperatingLeaseWeightedAverageRemainingLeaseTerm1",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2482453 - Disclosure - LEASES - Supplemental Balance Sheet Information of Operating Leases (Details) (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/LEASESSupplementalBalanceSheetInformationofOperatingLeasesDetailsDetails",
                "shortName":  "LEASES - Supplemental Balance Sheet Information of Operating Leases (Details) (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "csod:LesseeOperatingLeasesAssetsAndLiabilitiesTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:OperatingLeaseWeightedAverageRemainingLeaseTerm1",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R95":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2483454 - Disclosure - LEASES - Maturities of Operating Lease Liabilities (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails",
                "shortName":  "LEASES - Maturities of Operating Lease Liabilities (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R96":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ContractWithCustomerLiabilityRevenueRecognized",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2485455 - Disclosure - DEFERRED REVENUE AND REMAINING PERFORMANCE OBLIGATIONS (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/DEFERREDREVENUEANDREMAININGPERFORMANCEOBLIGATIONSDetails",
                "shortName":  "DEFERRED REVENUE AND REMAINING PERFORMANCE OBLIGATIONS (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ContractWithCustomerLiabilityRevenueRecognized",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R97":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DefinedContributionPlanEmployerMatchingContributionPercentOfMatch",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "number",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2487456 - Disclosure - 401(K) SAVINGS PLAN (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/A401KSAVINGSPLANDetails",
                "shortName":  "401(K) SAVINGS PLAN (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DefinedContributionPlanEmployerMatchingContributionPercentOfMatch",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "number",
                    "xsiNil":  "false"
                    }
                },
            "R98":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "div",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:NumberOfOperatingSegments",
                    "reportCount":  1,
                    "unitRef":  "segment",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2490457 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONDetails",
                "shortName":  "SEGMENT AND GEOGRAPHIC INFORMATION (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  null
                },
            "R99":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i437f62f6c9b74d8791445fe146d5e7d8_D20200101-20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
                    "reportCount":  1,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "2491458 - Disclosure - SEGMENT AND GEOGRAPHIC INFORMATION - Sources of Revenue (Details)",
                "role":  "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONSourcesofRevenueDetails",
                "shortName":  "SEGMENT AND GEOGRAPHIC INFORMATION - Sources of Revenue (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "us-gaap:ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock",
                        "ix:continuation",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "id78d1a2595ec4a828f3dc4d04c446b2c_D20200101-20201231",
                    "decimals":  "-3",
                    "lang":  "en-US",
                    "name":  "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                },
            "R9999":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RestrictedCashCurrent",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    },
                "groupType":  "",
                "isDefault":  "false",
                "longName":  "Uncategorized Items - csod-20201231.htm",
                "role":  "http://xbrl.sec.gov/role/uncategorizedFacts",
                "shortName":  "Uncategorized Items - csod-20201231.htm",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "csod-20201231.htm",
                    "contextRef":  "i02594cb966a440d482c865971c444ecc_I20201231",
                    "decimals":  "-3",
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RestrictedCashCurrent",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "usd",
                    "xsiNil":  "false"
                    }
                }
            },
        "segmentCount":  80,
        "tag":  {
            "country_CA":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "CANADA",
                            "terseLabel":  "Canada"
                            }
                        }
                    },
                "localname":  "CA",
                "nsuri":  "http://xbrl.sec.gov/country/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONPropertyandEquipmentbyGeographicRegionDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "country_GB":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "UNITED KINGDOM",
                            "terseLabel":  "United Kingdom"
                            }
                        }
                    },
                "localname":  "GB",
                "nsuri":  "http://xbrl.sec.gov/country/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONPropertyandEquipmentbyGeographicRegionDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "country_US":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "UNITED STATES",
                            "terseLabel":  "United States"
                            }
                        }
                    },
                "localname":  "US",
                "nsuri":  "http://xbrl.sec.gov/country/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONPropertyandEquipmentbyGeographicRegionDetails",
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONRevenuebyGeographicRegionDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_AllOtherCountriesMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "All Other Countries [Member]",
                            "label":  "All Other Countries [Member]",
                            "terseLabel":  "All other countries"
                            }
                        }
                    },
                "localname":  "AllOtherCountriesMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONPropertyandEquipmentbyGeographicRegionDetails",
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONRevenuebyGeographicRegionDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_AllowanceForDoubtfulAccountsReceivableProvisionAndOtherAdjustments":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Allowance for Doubtful Accounts Receivable, Provision and Other Adjustments",
                            "label":  "Allowance for Doubtful Accounts Receivable, Provision and Other Adjustments",
                            "terseLabel":  "Additions and adjustments"
                            }
                        }
                    },
                "localname":  "AllowanceForDoubtfulAccountsReceivableProvisionAndOtherAdjustments",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESAllowanceforCreditLossesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_AssetsAcquiredUnderCapitalLeasesAndOtherFinancingArrangements":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Assets Acquired Under Capital Leases And Other Financing Arrangements",
                            "label":  "Assets Acquired Under Capital Leases And Other Financing Arrangements",
                            "terseLabel":  "Assets acquired under capital leases and other financing arrangements"
                            }
                        }
                    },
                "localname":  "AssetsAcquiredUnderCapitalLeasesAndOtherFinancingArrangements",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentDeferredRevenue":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Revenue",
                            "label":  "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Revenue",
                            "terseLabel":  "Deferred revenue, Measurement Period Adjustments"
                            }
                        }
                    },
                "localname":  "BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentDeferredRevenue",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentDeferredTax":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Tax Liabilities, Net",
                            "label":  "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred tax",
                            "terseLabel":  "Deferred tax liabilities, net, Measurement Period Adjustments"
                            }
                        }
                    },
                "localname":  "BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentDeferredTax",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOtherNoncurrentAssets":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialAssets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Noncurrent Assets",
                            "label":  "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Noncurrent Assets",
                            "terseLabel":  "Other assets, Measurement Period Adjustments"
                            }
                        }
                    },
                "localname":  "BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOtherNoncurrentAssets",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentRevenue":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Revenue",
                            "label":  "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Revenue",
                            "terseLabel":  "Revenue, measurement period adjustment"
                            }
                        }
                    },
                "localname":  "BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentRevenue",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAndAccruedExpenses":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable And Accrued Expenses",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable And Accrued Expenses",
                            "terseLabel":  "Accounts payable and accrued expenses"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAndAccruedExpenses",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOperatingLeaseLiability":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Operating Lease Liability",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Operating Lease Liability",
                            "terseLabel":  "Operating lease liabilities"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOperatingLeaseLiability",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAccountsPayableAccruedExpensesAndOtherLiabilities":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities, Accounts Payable, Accrued Expenses, And Other Liabilities",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities, Accounts Payable, Accrued Expenses, And Other Liabilities",
                            "negatedTerseLabel":  "Accounts payable and accrued expenses"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAccountsPayableAccruedExpensesAndOtherLiabilities",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  2.0,
                        "parentTag":  "csod_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTotalAssetsAndGoodwill",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease Right Of Use Assets",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease Right Of Use Assets",
                            "terseLabel":  "Operating right-of-use assets"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTotalAssetsAndGoodwill":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Total Assets and Goodwill",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Total Assets and Goodwill",
                            "totalLabel":  "Total assets"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTotalAssetsAndGoodwill",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_CapitalizedComputerSoftwareForInternalUseEstimatedUsefulLives":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Capitalized Computer Software for Internal Use, Estimated Useful Lives",
                            "label":  "Capitalized Computer Software for Internal Use, Estimated Useful Lives",
                            "terseLabel":  "Capitalized software costs, estimated useful life"
                            }
                        }
                    },
                "localname":  "CapitalizedComputerSoftwareForInternalUseEstimatedUsefulLives",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESCapitalizedSoftwareCostsDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "csod_ClustreeMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Clustree",
                            "label":  "Clustree [Member]",
                            "terseLabel":  "Clustree"
                            }
                        }
                    },
                "localname":  "ClustreeMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_ComputerEquipmentAndSoftwareMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Computer Equipment and Software [Member]",
                            "label":  "Computer Equipment and Software [Member]",
                            "terseLabel":  "Computer equipment and software"
                            }
                        }
                    },
                "localname":  "ComputerEquipmentAndSoftwareMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_ContentLibraryMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Content Library [Member]",
                            "label":  "Content Library [Member]",
                            "verboseLabel":  "Content library"
                            }
                        }
                    },
                "localname":  "ContentLibraryMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_ContractualObligationTerm":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Contractual Obligation, Term",
                            "label":  "Contractual Obligation, Term",
                            "terseLabel":  "Contractual obligation, term"
                            }
                        }
                    },
                "localname":  "ContractualObligationTerm",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COMMITMENTSANDCONTINGENCIESDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "csod_ConvertibleSeniorNotesAt5.75Maturing2021Member":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Convertible Senior Notes At 5.75%, Maturing 2021 [Member]",
                            "label":  "Convertible Senior Notes At 5.75%, Maturing 2021 [Member]",
                            "terseLabel":  "The 2021 Notes"
                            }
                        }
                    },
                "localname":  "ConvertibleSeniorNotesAt5.75Maturing2021Member",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESConvertibleNotesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_DebtInstrumentIssuanceDiscountPercentage":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Debt Instrument, Issuance Discount, Percentage",
                            "label":  "Debt Instrument, Issuance Discount, Percentage",
                            "terseLabel":  "Discount rate at issuance"
                            }
                        }
                    },
                "localname":  "DebtInstrumentIssuanceDiscountPercentage",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESConvertibleNotesDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "csod_DebtInstrumentPeriodicPaymentPrincipalPercent":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Debt Instrument, Periodic Payment, Principal, Percent",
                            "label":  "Debt Instrument, Periodic Payment, Principal, Percent",
                            "terseLabel":  "Periodic payment (in percent)"
                            }
                        }
                    },
                "localname":  "DebtInstrumentPeriodicPaymentPrincipalPercent",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "percentItemType"
                },
            "csod_DeferredTaxAssetsOperatingLeaseLiabilities":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_DeferredTaxAssetsGross",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Deferred Tax Assets, Operating Lease Liabilities",
                            "label":  "Deferred Tax Assets, Operating Lease Liabilities",
                            "terseLabel":  "Operating lease liabilities"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsOperatingLeaseLiabilities",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_DeferredTaxLiabilitiesPrepaidExpensesAndDeferredExpenses":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_DeferredIncomeTaxLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Deferred Tax Liabilities, Prepaid Expenses and Deferred Expenses",
                            "label":  "Deferred Tax Liabilities, Prepaid Expenses and Deferred Expenses",
                            "negatedLabel":  "Prepaid expenses and deferred commissions"
                            }
                        }
                    },
                "localname":  "DeferredTaxLiabilitiesPrepaidExpensesAndDeferredExpenses",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_DeferredTaxLiabilityConvertibleDebtDiscount":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_DeferredIncomeTaxLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Deferred Tax Liability, Convertible Debt Discount",
                            "label":  "Deferred Tax Liability, Convertible Debt Discount",
                            "terseLabel":  "Convertible note discount"
                            }
                        }
                    },
                "localname":  "DeferredTaxLiabilityConvertibleDebtDiscount",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_DeferredTaxLiabilityIntangibleAssetsAndFixedAssets":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_DeferredIncomeTaxLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Deferred Tax Liability, Intangible Assets And Fixed Assets",
                            "label":  "Deferred Tax Liability, Intangible Assets And Fixed Assets",
                            "negatedTerseLabel":  "Intangible assets and fixed assets"
                            }
                        }
                    },
                "localname":  "DeferredTaxLiabilityIntangibleAssetsAndFixedAssets",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_DeferredTaxLiabilityRightofUseAsset":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_DeferredIncomeTaxLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Deferred Tax Liability, Right of Use Asset",
                            "label":  "Deferred Tax Liability, Right of Use Asset",
                            "negatedTerseLabel":  "Operating right-of-use assets"
                            }
                        }
                    },
                "localname":  "DeferredTaxLiabilityRightofUseAsset",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_DefinedContributionPlanEmployersMatchingContributionMaximumAnnualContributionsByEmployer":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Defined Contribution Plan, Employers Matching Contribution, Maximum Annual Contributions by Employer",
                            "label":  "Defined Contribution Plan, Employers Matching Contribution, Maximum Annual Contributions by Employer",
                            "terseLabel":  "Maximum 401(k) annual contributions by employer per employee"
                            }
                        }
                    },
                "localname":  "DefinedContributionPlanEmployersMatchingContributionMaximumAnnualContributionsByEmployer",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/A401KSAVINGSPLANDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_DefinedContributionPlanVestingPeriod":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Defined Contribution Plan, Vesting Period",
                            "label":  "Defined Contribution Plan, Vesting Period",
                            "terseLabel":  "401(k) vesting period"
                            }
                        }
                    },
                "localname":  "DefinedContributionPlanVestingPeriod",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/A401KSAVINGSPLANDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "csod_EffectiveIncomeTaxRateReconciliationGILTI":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails":  {
                        "order":  10.0,
                        "parentTag":  "us-gaap_IncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Effective Income Tax Rate Reconciliation, GILTI",
                            "label":  "Effective Income Tax Rate Reconciliation, GILTI",
                            "terseLabel":  "GILTI"
                            }
                        }
                    },
                "localname":  "EffectiveIncomeTaxRateReconciliationGILTI",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_EffectiveIncomeTaxRateReconciliationPermanentDifferences":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails":  {
                        "order":  7.0,
                        "parentTag":  "us-gaap_IncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Effective Income Tax Rate Reconciliation, Permanent Differences",
                            "label":  "Effective Income Tax Rate Reconciliation, Permanent Differences",
                            "terseLabel":  "Other permanent differences"
                            }
                        }
                    },
                "localname":  "EffectiveIncomeTaxRateReconciliationPermanentDifferences",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_EffectiveIncomeTaxRateReconciliationTransactionCost":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails":  {
                        "order":  9.0,
                        "parentTag":  "us-gaap_IncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Effective Income Tax Rate Reconciliation, Transaction Cost",
                            "label":  "Effective Income Tax Rate Reconciliation, Transaction Cost",
                            "terseLabel":  "Transaction costs"
                            }
                        }
                    },
                "localname":  "EffectiveIncomeTaxRateReconciliationTransactionCost",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_EmployeeStockPurchasePlanESPPPurchasePricePercentageOfFairMarketValueGrantDate":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Employee Stock Purchase Plan (ESPP), Purchase Price Percentage of Fair Market Value, Grant Date",
                            "label":  "Employee Stock Purchase Plan (ESPP), Purchase Price Percentage Of Fair Market Value, Grant Date",
                            "terseLabel":  "Percentage of the fair market value at time of grant"
                            }
                        }
                    },
                "localname":  "EmployeeStockPurchasePlanESPPPurchasePricePercentageOfFairMarketValueGrantDate",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "csod_EmployeeStockPurchasePlanESPPPurchasePricePercentageofFairMarketValueExerciseDate":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Employee Stock Purchase Plan (ESPP), Purchase Price Percentage of Fair Market Value, Exercise Date",
                            "label":  "Employee Stock Purchase Plan (ESPP), Purchase Price Percentage of Fair Market Value, Exercise Date",
                            "terseLabel":  "Percentage of the fair market value at the time of exercise"
                            }
                        }
                    },
                "localname":  "EmployeeStockPurchasePlanESPPPurchasePricePercentageofFairMarketValueExerciseDate",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "csod_EmployeeStockPurchasePlanMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Employee Stock Purchase Plan [Member]",
                            "label":  "Employee Stock Purchase Plan [Member]",
                            "terseLabel":  "ESPP"
                            }
                        }
                    },
                "localname":  "EmployeeStockPurchasePlanMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_IncreaseDecreaseInDebtDiscountDueToDebtModification":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Increase (Decrease) in Debt Discount Due To Debt Modification",
                            "label":  "Increase (Decrease) in Debt Discount Due To Debt Modification",
                            "terseLabel":  "Increase in debt discount as a result of modification of Convertible Notes"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInDebtDiscountDueToDebtModification",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_LesseeOperatingLeaseOptionToExtendPeriod":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Lessee, Operating Lease, Option To Extend, Period",
                            "label":  "Lessee, Operating Lease, Option To Extend, Period",
                            "terseLabel":  "Remaining lease terms, option to extend"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseOptionToExtendPeriod",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESNarrativeDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "csod_LesseeOperatingLeasesAssetsAndLiabilitiesTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Lessee, Operating Leases, Assets And Liabilities [Table Text Block]",
                            "label":  "Lessee, Operating Leases, Assets And Liabilities [Table Text Block]",
                            "terseLabel":  "Supplemental Balance Sheet Information of Operating Leases"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeasesAssetsAndLiabilitiesTableTextBlock",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "csod_LesseeOperatingLeasesSupplementalCashFlowTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Lessee, Operating Leases, Supplemental Cash Flow [Table Text Block]",
                            "label":  "Lessee, Operating Leases, Supplemental Cash Flow [Table Text Block]",
                            "terseLabel":  "Supplemental Cash Flow Information Related to Leases"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeasesSupplementalCashFlowTableTextBlock",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "csod_LineOfCreditFacilityMaximumBorrowingCapacityAvailableAtClosing":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line of Credit Facility, Maximum Borrowing Capacity, Available At Closing",
                            "label":  "Line of Credit Facility, Maximum Borrowing Capacity, Available At Closing",
                            "terseLabel":  "Maximum borrowing capacity available at closing"
                            }
                        }
                    },
                "localname":  "LineOfCreditFacilityMaximumBorrowingCapacityAvailableAtClosing",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_LongTermInvestmentsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Long Term Investments [Member]",
                            "label":  "Long Term Investments [Member]",
                            "terseLabel":  "Total long-term investments"
                            }
                        }
                    },
                "localname":  "LongTermInvestmentsMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSLongTermInvestmentsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_LongTermMarketableInvestmentsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Long Term Marketable Investments",
                            "label":  "Long Term Marketable Investments [Member]",
                            "terseLabel":  "Long-term marketable investments:"
                            }
                        }
                    },
                "localname":  "LongTermMarketableInvestmentsMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSLongTermInvestmentsDetails",
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_LongTermNonMarketableInvestmentsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Long Term Non-Marketable Investments",
                            "label":  "Long Term Non-Marketable Investments [Member]",
                            "terseLabel":  "Non-marketable investments"
                            }
                        }
                    },
                "localname":  "LongTermNonMarketableInvestmentsMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSLongTermInvestmentsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_ModificationOfConvertibleNotes":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Modification Of Convertible Notes",
                            "label":  "Modification Of Convertible Notes",
                            "terseLabel":  "Modification of Convertible Notes"
                            }
                        }
                    },
                "localname":  "ModificationOfConvertibleNotes",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_MoneyMarketFundsMaturityDate":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Money Market Funds, Maturity Date",
                            "label":  "Money Market Funds, Maturity Date",
                            "terseLabel":  "Money market fund maturity date (or less)"
                            }
                        }
                    },
                "localname":  "MoneyMarketFundsMaturityDate",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail"
                    ],
                "xbrltype":  "durationItemType"
                },
            "csod_OperatingLeaseRemainingLeaseTerm":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Operating \u200bLease,\u200b Remaining \u200bLease\u200b Term",
                            "label":  "Operating \u200bLease,\u200b Remaining \u200bLease\u200b Term",
                            "terseLabel":  "Remaining \u200blease\u200b term"
                            }
                        }
                    },
                "localname":  "OperatingLeaseRemainingLeaseTerm",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESNarrativeDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "csod_OtherContractualArrangementsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Other Contractual Arrangements [Member]",
                            "label":  "Other Contractual Arrangements [Member]",
                            "terseLabel":  "Other Contractual Arrangements"
                            }
                        }
                    },
                "localname":  "OtherContractualArrangementsMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COMMITMENTSANDCONTINGENCIESDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_ProfessionalServicesRevenueMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Professional Services Revenue [Member]",
                            "label":  "Professional Services Revenue [Member]",
                            "terseLabel":  "Professional services revenue"
                            }
                        }
                    },
                "localname":  "ProfessionalServicesRevenueMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONSourcesofRevenueDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_RestructuringTypeAwardsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Restructuring Type Awards [Member]",
                            "label":  "Restructuring Type Awards [Member]",
                            "terseLabel":  "Restructuring"
                            }
                        }
                    },
                "localname":  "RestructuringTypeAwardsMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_SabaSoftwareIncMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Saba Software, Inc.",
                            "label":  "Saba Software, Inc. [Member]",
                            "terseLabel":  "Saba Software, Inc."
                            }
                        }
                    },
                "localname":  "SabaSoftwareIncMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSProFormaInformationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_ScheduleOfAllowanceForDoubtfulAccountsReceivableRollForwardTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Schedule of Allowance for Doubtful Accounts Receivable Roll Forward [Table Text Block]",
                            "label":  "Schedule of Allowance for Doubtful Accounts Receivable Roll Forward [Table Text Block]",
                            "terseLabel":  "Reconciliation of beginning and ending amount of allowance for credit losses"
                            }
                        }
                    },
                "localname":  "ScheduleOfAllowanceForDoubtfulAccountsReceivableRollForwardTableTextBlock",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "csod_ScheduleOfDebtCostAndInterestExpenseRecognizedTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Schedule of Debt Cost and Interest Expense Recognized",
                            "label":  "Schedule Of Debt Cost And Interest Expense Recognized [Table Text Block]",
                            "terseLabel":  "Schedule of Interest Expense Recognized"
                            }
                        }
                    },
                "localname":  "ScheduleOfDebtCostAndInterestExpenseRecognizedTableTextBlock",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "csod_SeniorSecuredFirstLienTermLoanBFacilityMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Senior Secured First lien Term Loan B Facility",
                            "label":  "Senior Secured First lien Term Loan B Facility [Member]",
                            "terseLabel":  "Senior Secured First lien Term Loan B Facility"
                            }
                        }
                    },
                "localname":  "SeniorSecuredFirstLienTermLoanBFacilityMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESConvertibleNotesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_ShareBasedCompensationArrangementByShareBasedPaymentAwardAnnualAdditionalSharesAuthorizationMaximumNumberOfShares":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Share-based Compensation Arrangement by Share-based Payment Award, Annual Additional Shares Authorization, Maximum Number of Shares",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Annual Additional Shares Authorization, Maximum Number of Shares",
                            "terseLabel":  "Additional issuable shares authorization, annual increase, maximum number of shares (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardAnnualAdditionalSharesAuthorizationMaximumNumberOfShares",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "csod_ShareBasedCompensationArrangementByShareBasedPaymentAwardAnnualAdditionalSharesAuthorizationPercentageOfOutstandingStockMaximum":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Share-based Compensation Arrangement by Share-based Payment Award, Annual Additional Shares Authorization, Percentage of Outstanding Stock Maximum",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Annual Additional Shares Authorization, Percentage of Outstanding Stock Maximum",
                            "terseLabel":  "Additional issuable shares authorization, annual increase, percentage of outstanding stock, maximum"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardAnnualAdditionalSharesAuthorizationPercentageOfOutstandingStockMaximum",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "csod_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedPortionInheritedFromPriorPlans":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized, Portion Inherited from Prior Plans",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized, Portion Inherited from Prior Plans",
                            "terseLabel":  "Number of shares to be added from 1999 and 2009 Plans (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedPortionInheritedFromPriorPlans",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "csod_SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsGrantDateFairValuePerShareMaximum":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Grant Date Fair Value Per Share, Maximum",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Grant Date Fair Value Per Share, Maximum",
                            "terseLabel":  "Grant date fair value per share, maximum"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsGrantDateFairValuePerShareMaximum",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSStockOptionPricingModelDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "csod_SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsGrantDateFairValuePerShareMinimum":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Grant Date Fair Value Per Share, Minimum",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Grant Date Fair Value Per Share, Minimum",
                            "terseLabel":  "Grant date fair value per share, minimum"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsGrantDateFairValuePerShareMinimum",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSStockOptionPricingModelDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "csod_SharesIssuedtoEmployeeStockPurchasePlanMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Shares Issued to Employee Stock Purchase Plan [Member]",
                            "label":  "Shares Issued to Employee Stock Purchase Plan [Member]",
                            "terseLabel":  "Shares issuable pursuant to employee stock purchase plan"
                            }
                        }
                    },
                "localname":  "SharesIssuedtoEmployeeStockPurchasePlanMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREAntidilutiveSharesExcludedFromCalculationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_StockBasedCompensationMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Stock-Based Compensation",
                            "label":  "Stock-Based Compensation [Member]",
                            "terseLabel":  "Stock-based compensation"
                            }
                        }
                    },
                "localname":  "StockBasedCompensationMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURINGDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_StockIssuedDuringPeriodWeightedAveragePriceEmployeeStockPurchasePlans":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Stock Issued During Period Weighted Average Price Employee Stock Purchase Plans",
                            "label":  "Stock Issued During Period Weighted Average Price Employee Stock Purchase Plans",
                            "terseLabel":  "Weighted average purchase price (in usd per share)"
                            }
                        }
                    },
                "localname":  "StockIssuedDuringPeriodWeightedAveragePriceEmployeeStockPurchasePlans",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSESPPActivityDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "csod_StockOptionPlans2010PlanMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Stock Option Plans, 2010 Plan",
                            "label":  "Stock Option Plans, 2010 Plan [Member]",
                            "terseLabel":  "2010 Plan"
                            }
                        }
                    },
                "localname":  "StockOptionPlans2010PlanMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_StockOptionsRestrictedStockUnitsAndPerformanceBasedRestrictedStockUnitsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Stock Options, Restricted Stock Units, And Performance-Based Restricted Stock Units [Member]",
                            "label":  "Stock Options, Restricted Stock Units, And Performance-Based Restricted Stock Units [Member]",
                            "verboseLabel":  "Options to purchase common stock, restricted stock units, and performance-based restricted stock units"
                            }
                        }
                    },
                "localname":  "StockOptionsRestrictedStockUnitsAndPerformanceBasedRestrictedStockUnitsMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREAntidilutiveSharesExcludedFromCalculationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_StockRepurchaseProgramTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "[Table Text Block] for Stock Repurchase Program [Table]",
                            "label":  "Stock Repurchase Program [Table Text Block]",
                            "terseLabel":  "Summary of stock repurchases under program"
                            }
                        }
                    },
                "localname":  "StockRepurchaseProgramTableTextBlock",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "csod_SubscriptionRevenueMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Subscription Revenue [Member]",
                            "label":  "Subscription Revenue [Member]",
                            "terseLabel":  "Subscription revenue"
                            }
                        }
                    },
                "localname":  "SubscriptionRevenueMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONSourcesofRevenueDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_USFederalAndStateMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "US Federal and State",
                            "label":  "US Federal and State [Member]",
                            "terseLabel":  "US Federal and State"
                            }
                        }
                    },
                "localname":  "USFederalAndStateMember",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESAdditionalInformationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "csod_UndistributedForeignEarningsTaxEffect":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Undistributed Foreign Earnings, Tax Effect",
                            "label":  "Undistributed Foreign Earnings, Tax Effect",
                            "terseLabel":  "Potential tax impact if undistributed foreign earnings were distributed"
                            }
                        }
                    },
                "localname":  "UndistributedForeignEarningsTaxEffect",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESAdditionalInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_UnrecognizedTaxBenefitOnUncertainTaxPositions":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Unrecognized Tax Benefit on Uncertain Tax Positions",
                            "label":  "Unrecognized Tax Benefit on Uncertain Tax Positions",
                            "terseLabel":  "Unrecognized tax benefit on uncertain tax positions"
                            }
                        }
                    },
                "localname":  "UnrecognizedTaxBenefitOnUncertainTaxPositions",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESAdditionalInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "csod_ValueOfResourcesDonatedToRelatedParties1":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Value Of Resources Donated To Related Parties",
                            "label":  "Value Of Resources Donated To Related Parties1",
                            "terseLabel":  "Value of resources donated to related parties"
                            }
                        }
                    },
                "localname":  "ValueOfResourcesDonatedToRelatedParties1",
                "nsuri":  "http://www.cornerstoneondemand.com/20201231",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RELATEDPARTYTRANSACTIONSDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "dei_AmendmentFlag":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.",
                            "label":  "Amendment Flag",
                            "terseLabel":  "Amendment Flag"
                            }
                        }
                    },
                "localname":  "AmendmentFlag",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_CityAreaCode":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Area code of city",
                            "label":  "City Area Code",
                            "terseLabel":  "City Area Code"
                            }
                        }
                    },
                "localname":  "CityAreaCode",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_CoverAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Cover page.",
                            "label":  "Cover [Abstract]",
                            "terseLabel":  "Cover page."
                            }
                        }
                    },
                "localname":  "CoverAbstract",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "dei_CurrentFiscalYearEndDate":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "End date of current fiscal year in the format --MM-DD.",
                            "label":  "Current Fiscal Year End Date",
                            "terseLabel":  "Current Fiscal Year End Date"
                            }
                        }
                    },
                "localname":  "CurrentFiscalYearEndDate",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "gMonthDayItemType"
                },
            "dei_DocumentAnnualReport":  {
                "auth_ref":  [
                    "r680",
                    "r681",
                    "r682"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Boolean flag that is true only for a form used as an annual report.",
                            "label":  "Document Annual Report",
                            "terseLabel":  "Document Annual Report"
                            }
                        }
                    },
                "localname":  "DocumentAnnualReport",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_DocumentFiscalPeriodFocus":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Fiscal period values are FY, Q1, Q2, and Q3.   1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY.",
                            "label":  "Document Fiscal Period Focus",
                            "terseLabel":  "Document Fiscal Period Focus"
                            }
                        }
                    },
                "localname":  "DocumentFiscalPeriodFocus",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "fiscalPeriodItemType"
                },
            "dei_DocumentFiscalYearFocus":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "This is focus fiscal year of the document report in YYYY format.  For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus.  Example: 2006.",
                            "label":  "Document Fiscal Year Focus",
                            "terseLabel":  "Document Fiscal Year Focus"
                            }
                        }
                    },
                "localname":  "DocumentFiscalYearFocus",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "gYearItemType"
                },
            "dei_DocumentPeriodEndDate":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The end date of the period reflected on the cover page if a periodic report.  For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date.  The format of the date is YYYY-MM-DD.",
                            "label":  "Document Period End Date",
                            "terseLabel":  "Document Period End Date"
                            }
                        }
                    },
                "localname":  "DocumentPeriodEndDate",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "dateItemType"
                },
            "dei_DocumentTransitionReport":  {
                "auth_ref":  [
                    "r683"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Boolean flag that is true only for a form used as a transition report.",
                            "label":  "Document Transition Report",
                            "terseLabel":  "Document Transition Report"
                            }
                        }
                    },
                "localname":  "DocumentTransitionReport",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_DocumentType":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc).  The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.",
                            "label":  "Document Type",
                            "terseLabel":  "Document Type"
                            }
                        }
                    },
                "localname":  "DocumentType",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "submissionTypeItemType"
                },
            "dei_DocumentsIncorporatedByReferenceTextBlock":  {
                "auth_ref":  [
                    "r678"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Documents incorporated by reference.",
                            "label":  "Documents Incorporated by Reference [Text Block]",
                            "terseLabel":  "Documents Incorporated by Reference"
                            }
                        }
                    },
                "localname":  "DocumentsIncorporatedByReferenceTextBlock",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "dei_EntityAddressAddressLine1":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Address Line 1 such as Attn, Building Name, Street Name",
                            "label":  "Entity Address, Address Line One",
                            "terseLabel":  "Entity Address, Address Line One"
                            }
                        }
                    },
                "localname":  "EntityAddressAddressLine1",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_EntityAddressAddressLine2":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Address Line 2 such as Street or Suite number",
                            "label":  "Entity Address, Address Line Two",
                            "terseLabel":  "Entity Address, Address Line Two"
                            }
                        }
                    },
                "localname":  "EntityAddressAddressLine2",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_EntityAddressCityOrTown":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Name of the City or Town",
                            "label":  "Entity Address, City or Town",
                            "terseLabel":  "Entity Address, City or Town"
                            }
                        }
                    },
                "localname":  "EntityAddressCityOrTown",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_EntityAddressPostalZipCode":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Code for the postal or zip code",
                            "label":  "Entity Address, Postal Zip Code",
                            "terseLabel":  "Entity Address, Postal Zip Code"
                            }
                        }
                    },
                "localname":  "EntityAddressPostalZipCode",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_EntityAddressStateOrProvince":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Name of the state or province.",
                            "label":  "Entity Address, State or Province",
                            "terseLabel":  "Entity Address, State or Province"
                            }
                        }
                    },
                "localname":  "EntityAddressStateOrProvince",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "stateOrProvinceItemType"
                },
            "dei_EntityCentralIndexKey":  {
                "auth_ref":  [
                    "r684"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC.  It is commonly abbreviated as CIK.",
                            "label":  "Entity Central Index Key",
                            "terseLabel":  "Entity Central Index Key"
                            }
                        }
                    },
                "localname":  "EntityCentralIndexKey",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "centralIndexKeyItemType"
                },
            "dei_EntityCommonStockSharesOutstanding":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report.  Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.",
                            "label":  "Entity Common Stock, Shares Outstanding",
                            "terseLabel":  "Entity Common Stock, Shares Outstanding"
                            }
                        }
                    },
                "localname":  "EntityCommonStockSharesOutstanding",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "dei_EntityCurrentReportingStatus":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days.  This information should be based on the registrant's current or most recent filing containing the related disclosure.",
                            "label":  "Entity Current Reporting Status",
                            "terseLabel":  "Entity Current Reporting Status"
                            }
                        }
                    },
                "localname":  "EntityCurrentReportingStatus",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "yesNoItemType"
                },
            "dei_EntityEmergingGrowthCompany":  {
                "auth_ref":  [
                    "r684"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Indicate if registrant meets the emerging growth company criteria.",
                            "label":  "Entity Emerging Growth Company",
                            "terseLabel":  "Entity Emerging Growth Company"
                            }
                        }
                    },
                "localname":  "EntityEmergingGrowthCompany",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_EntityFileNumber":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Commission file number.  The field allows up to 17 characters.  The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.",
                            "label":  "Entity File Number",
                            "terseLabel":  "Entity File Number"
                            }
                        }
                    },
                "localname":  "EntityFileNumber",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "fileNumberItemType"
                },
            "dei_EntityFilerCategory":  {
                "auth_ref":  [
                    "r684"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Indicate whether the registrant is one of the following:  Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer.  Definitions of these categories are stated in Rule 12b-2 of the Exchange Act.  This information should be based on the registrant's current or most recent filing containing the related disclosure.",
                            "label":  "Entity Filer Category",
                            "terseLabel":  "Entity Filer Category"
                            }
                        }
                    },
                "localname":  "EntityFilerCategory",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "filerCategoryItemType"
                },
            "dei_EntityIncorporationStateCountryCode":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Two-character EDGAR code representing the state or country of incorporation.",
                            "label":  "Entity Incorporation, State or Country Code",
                            "terseLabel":  "Entity Incorporation, State or Country Code"
                            }
                        }
                    },
                "localname":  "EntityIncorporationStateCountryCode",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "edgarStateCountryItemType"
                },
            "dei_EntityInteractiveDataCurrent":  {
                "auth_ref":  [
                    "r685"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).",
                            "label":  "Entity Interactive Data Current",
                            "terseLabel":  "Entity Interactive Data Current"
                            }
                        }
                    },
                "localname":  "EntityInteractiveDataCurrent",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "yesNoItemType"
                },
            "dei_EntityPublicFloat":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter.",
                            "label":  "Entity Public Float",
                            "terseLabel":  "Entity Public Float"
                            }
                        }
                    },
                "localname":  "EntityPublicFloat",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "dei_EntityRegistrantName":  {
                "auth_ref":  [
                    "r684"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.",
                            "label":  "Entity Registrant Name",
                            "terseLabel":  "Entity Registrant Name"
                            }
                        }
                    },
                "localname":  "EntityRegistrantName",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_EntityShellCompany":  {
                "auth_ref":  [
                    "r684"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act.",
                            "label":  "Entity Shell Company",
                            "terseLabel":  "Entity Shell Company"
                            }
                        }
                    },
                "localname":  "EntityShellCompany",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_EntitySmallBusiness":  {
                "auth_ref":  [
                    "r684"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Indicates that the company is a Smaller Reporting Company (SRC).",
                            "label":  "Entity Small Business",
                            "terseLabel":  "Entity Small Business"
                            }
                        }
                    },
                "localname":  "EntitySmallBusiness",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_EntityTaxIdentificationNumber":  {
                "auth_ref":  [
                    "r684"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.",
                            "label":  "Entity Tax Identification Number",
                            "terseLabel":  "Entity Tax Identification Number"
                            }
                        }
                    },
                "localname":  "EntityTaxIdentificationNumber",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "employerIdItemType"
                },
            "dei_EntityVoluntaryFilers":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Indicate 'Yes' or 'No' if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.",
                            "label":  "Entity Voluntary Filers",
                            "terseLabel":  "Entity Voluntary Filers"
                            }
                        }
                    },
                "localname":  "EntityVoluntaryFilers",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "yesNoItemType"
                },
            "dei_EntityWellKnownSeasonedIssuer":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Indicate 'Yes' or 'No' if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A.",
                            "label":  "Entity Well-known Seasoned Issuer",
                            "terseLabel":  "Entity Well-known Seasoned Issuer"
                            }
                        }
                    },
                "localname":  "EntityWellKnownSeasonedIssuer",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "yesNoItemType"
                },
            "dei_IcfrAuditorAttestationFlag":  {
                "auth_ref":  [
                    "r680",
                    "r681",
                    "r682"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "ICFR Auditor Attestation Flag",
                            "terseLabel":  "ICFR Auditor Attestation Flag"
                            }
                        }
                    },
                "localname":  "IcfrAuditorAttestationFlag",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_LocalPhoneNumber":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Local phone number for entity.",
                            "label":  "Local Phone Number",
                            "terseLabel":  "Local Phone Number"
                            }
                        }
                    },
                "localname":  "LocalPhoneNumber",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_Security12bTitle":  {
                "auth_ref":  [
                    "r677"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Title of a 12(b) registered security.",
                            "label":  "Title of 12(b) Security",
                            "terseLabel":  "Title of 12(b) Security"
                            }
                        }
                    },
                "localname":  "Security12bTitle",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "securityTitleItemType"
                },
            "dei_SecurityExchangeName":  {
                "auth_ref":  [
                    "r679"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Name of the Exchange on which a security is registered.",
                            "label":  "Security Exchange Name",
                            "terseLabel":  "Security Exchange Name"
                            }
                        }
                    },
                "localname":  "SecurityExchangeName",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "edgarExchangeCodeItemType"
                },
            "dei_TradingSymbol":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Trading symbol of an instrument as listed on an exchange.",
                            "label":  "Trading Symbol",
                            "terseLabel":  "Trading Symbol"
                            }
                        }
                    },
                "localname":  "TradingSymbol",
                "nsuri":  "http://xbrl.sec.gov/dei/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COVER"
                    ],
                "xbrltype":  "tradingSymbolItemType"
                },
            "srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember":  {
                "auth_ref":  [
                    "r132",
                    "r137",
                    "r226",
                    "r395",
                    "r396",
                    "r397",
                    "r439",
                    "r440"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Cumulative Effect, Period of Adoption, Adjustment [Member]",
                            "terseLabel":  "Cumulative Effect, Period of Adoption, Adjustment"
                            }
                        }
                    },
                "localname":  "CumulativeEffectPeriodOfAdoptionAdjustmentMember",
                "nsuri":  "http://fasb.org/srt/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_CumulativeEffectPeriodOfAdoptionAxis":  {
                "auth_ref":  [
                    "r132",
                    "r137",
                    "r226",
                    "r395",
                    "r396",
                    "r397",
                    "r439",
                    "r440"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Cumulative Effect, Period of Adoption [Axis]",
                            "terseLabel":  "Cumulative Effect, Period of Adoption [Axis]"
                            }
                        }
                    },
                "localname":  "CumulativeEffectPeriodOfAdoptionAxis",
                "nsuri":  "http://fasb.org/srt/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "stringItemType"
                },
            "srt_CumulativeEffectPeriodOfAdoptionDomain":  {
                "auth_ref":  [
                    "r132",
                    "r137",
                    "r226",
                    "r395",
                    "r396",
                    "r397",
                    "r439",
                    "r440"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Cumulative Effect, Period of Adoption [Domain]",
                            "terseLabel":  "Cumulative Effect, Period of Adoption [Domain]"
                            }
                        }
                    },
                "localname":  "CumulativeEffectPeriodOfAdoptionDomain",
                "nsuri":  "http://fasb.org/srt/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_MaximumMember":  {
                "auth_ref":  [
                    "r358",
                    "r360",
                    "r566",
                    "r567",
                    "r568",
                    "r569",
                    "r570",
                    "r571",
                    "r590",
                    "r642",
                    "r645"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Maximum [Member]",
                            "terseLabel":  "Maximum"
                            }
                        }
                    },
                "localname":  "MaximumMember",
                "nsuri":  "http://fasb.org/srt/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/LEASESNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESImpairmentIntangibleAssetsandGoodwillDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPropertyandEquipmentDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_MinimumMember":  {
                "auth_ref":  [
                    "r358",
                    "r360",
                    "r566",
                    "r567",
                    "r568",
                    "r569",
                    "r570",
                    "r571",
                    "r590",
                    "r642",
                    "r645"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Minimum [Member]",
                            "terseLabel":  "Minimum"
                            }
                        }
                    },
                "localname":  "MinimumMember",
                "nsuri":  "http://fasb.org/srt/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/LEASESNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESImpairmentIntangibleAssetsandGoodwillDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPropertyandEquipmentDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_ProductOrServiceAxis":  {
                "auth_ref":  [
                    "r193",
                    "r332",
                    "r335",
                    "r594",
                    "r641",
                    "r643"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Product and Service [Axis]",
                            "terseLabel":  "Product and Service [Axis]"
                            }
                        }
                    },
                "localname":  "ProductOrServiceAxis",
                "nsuri":  "http://fasb.org/srt/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONSourcesofRevenueDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "srt_ProductsAndServicesDomain":  {
                "auth_ref":  [
                    "r193",
                    "r332",
                    "r335",
                    "r594",
                    "r641",
                    "r643"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Product and Service [Domain]",
                            "terseLabel":  "Product and Service [Domain]"
                            }
                        }
                    },
                "localname":  "ProductsAndServicesDomain",
                "nsuri":  "http://fasb.org/srt/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONSourcesofRevenueDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_RangeAxis":  {
                "auth_ref":  [
                    "r338",
                    "r358",
                    "r360",
                    "r566",
                    "r567",
                    "r568",
                    "r569",
                    "r570",
                    "r571",
                    "r590",
                    "r642",
                    "r645"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Statistical Measurement [Axis]",
                            "terseLabel":  "Statistical Measurement [Axis]"
                            }
                        }
                    },
                "localname":  "RangeAxis",
                "nsuri":  "http://fasb.org/srt/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/LEASESNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESImpairmentIntangibleAssetsandGoodwillDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPropertyandEquipmentDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "srt_RangeMember":  {
                "auth_ref":  [
                    "r338",
                    "r358",
                    "r360",
                    "r566",
                    "r567",
                    "r568",
                    "r569",
                    "r570",
                    "r571",
                    "r590",
                    "r642",
                    "r645"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Statistical Measurement [Domain]",
                            "terseLabel":  "Statistical Measurement [Domain]"
                            }
                        }
                    },
                "localname":  "RangeMember",
                "nsuri":  "http://fasb.org/srt/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/LEASESNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESImpairmentIntangibleAssetsandGoodwillDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPropertyandEquipmentDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_SegmentGeographicalDomain":  {
                "auth_ref":  [
                    "r194",
                    "r195",
                    "r332",
                    "r336",
                    "r644",
                    "r664",
                    "r665",
                    "r666",
                    "r667",
                    "r668",
                    "r669",
                    "r670",
                    "r671"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Geographical [Domain]",
                            "terseLabel":  "Geographical [Domain]"
                            }
                        }
                    },
                "localname":  "SegmentGeographicalDomain",
                "nsuri":  "http://fasb.org/srt/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONPropertyandEquipmentbyGeographicRegionDetails",
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONRevenuebyGeographicRegionDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_StatementGeographicalAxis":  {
                "auth_ref":  [
                    "r194",
                    "r195",
                    "r332",
                    "r336",
                    "r644",
                    "r659",
                    "r664",
                    "r665",
                    "r666",
                    "r667",
                    "r668",
                    "r669",
                    "r670",
                    "r671",
                    "r672"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Geographical [Axis]",
                            "terseLabel":  "Geographical [Axis]"
                            }
                        }
                    },
                "localname":  "StatementGeographicalAxis",
                "nsuri":  "http://fasb.org/srt/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONPropertyandEquipmentbyGeographicRegionDetails",
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONRevenuebyGeographicRegionDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_AccountingPoliciesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Accounting Policies [Abstract]",
                            "terseLabel":  "Accounting Policies [Abstract]"
                            }
                        }
                    },
                "localname":  "AccountingPoliciesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_AccountsPayableCurrent":  {
                "auth_ref":  [
                    "r39"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_LiabilitiesCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.  Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
                            "label":  "Accounts Payable, Current",
                            "terseLabel":  "Accounts payable"
                            }
                        }
                    },
                "localname":  "AccountsPayableCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AccountsReceivableNetCurrent":  {
                "auth_ref":  [
                    "r2",
                    "r24",
                    "r199",
                    "r200"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_AssetsCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.",
                            "label":  "Accounts Receivable, after Allowance for Credit Loss, Current",
                            "terseLabel":  "Accounts receivable, net"
                            }
                        }
                    },
                "localname":  "AccountsReceivableNetCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments":  {
                "auth_ref":  [
                    "r109"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  14.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings.  This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium.  As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.",
                            "label":  "Accretion (Amortization) of Discounts and Premiums, Investments",
                            "negatedTerseLabel":  "Amortization (accretion) of purchased investment premium or discount, net"
                            }
                        }
                    },
                "localname":  "AccretionAmortizationOfDiscountsAndPremiumsInvestments",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AccruedLiabilitiesCurrent":  {
                "auth_ref":  [
                    "r43"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_LiabilitiesCurrent",
                        "weight":  1.0
                        },
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSAccruedExpensesDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered.  Examples include taxes, interest, rent and utilities.  Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
                            "label":  "Accrued Liabilities, Current",
                            "terseLabel":  "Accrued expenses",
                            "totalLabel":  "Total accrued expenses"
                            }
                        }
                    },
                "localname":  "AccruedLiabilitiesCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS",
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSAccruedExpensesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AccruedLiabilitiesMember":  {
                "auth_ref":  [
                    "r43"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "This item represents obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered.",
                            "label":  "Accrued Liabilities [Member]",
                            "terseLabel":  "Accrued expenses"
                            }
                        }
                    },
                "localname":  "AccruedLiabilitiesMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSDerivativeLiabilitiesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_AccruedSalariesCurrent":  {
                "auth_ref":  [
                    "r7",
                    "r8",
                    "r43"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSAccruedExpensesDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_AccruedLiabilitiesCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Carrying value as of the balance sheet date of the obligations incurred through that date and payable for employees' services provided.  Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
                            "label":  "Accrued Salaries, Current",
                            "terseLabel":  "Accrued compensation"
                            }
                        }
                    },
                "localname":  "AccruedSalariesCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSAccruedExpensesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AccruedSalesCommissionCurrentAndNoncurrent":  {
                "auth_ref":  [
                    "r16",
                    "r18",
                    "r605",
                    "r631"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSAccruedExpensesDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_AccruedLiabilitiesCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Carrying value as of the balance sheet date of obligations incurred through that date and payable for sales commissions.",
                            "label":  "Accrued Sales Commission",
                            "terseLabel":  "Accrued commissions"
                            }
                        }
                    },
                "localname":  "AccruedSalesCommissionCurrentAndNoncurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSAccruedExpensesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment":  {
                "auth_ref":  [
                    "r37",
                    "r266"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_PropertyPlantAndEquipmentNet",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.",
                            "label":  "Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment",
                            "negatedLabel":  "Less: accumulated depreciation and amortization"
                            }
                        }
                    },
                "localname":  "AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax":  {
                "auth_ref":  [
                    "r56",
                    "r60",
                    "r61",
                    "r62",
                    "r516"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_StockholdersEquity",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.",
                            "label":  "Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax",
                            "terseLabel":  "Accumulated other comprehensive (loss) income"
                            }
                        }
                    },
                "localname":  "AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AccumulatedOtherComprehensiveIncomeMember":  {
                "auth_ref":  [
                    "r59",
                    "r62",
                    "r64",
                    "r129",
                    "r130",
                    "r131",
                    "r482",
                    "r646",
                    "r647"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Accumulated increase (decrease) in equity from transactions and other events and circumstances from non-owner sources, attributable to the parent.  Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners.",
                            "label":  "AOCI Attributable to Parent [Member]",
                            "terseLabel":  "Accumulated Other Comprehensive Income (Loss)"
                            }
                        }
                    },
                "localname":  "AccumulatedOtherComprehensiveIncomeMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife":  {
                "auth_ref":  [
                    "r252"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
                            "label":  "Acquired Finite-lived Intangible Assets, Weighted Average Useful Life",
                            "terseLabel":  "Estimated Useful Life (in years)"
                            }
                        }
                    },
                "localname":  "AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_AdditionalPaidInCapitalCommonStock":  {
                "auth_ref":  [
                    "r25"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_StockholdersEquity",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions.  Includes only common stock transactions (excludes preferred stock transactions).  May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.",
                            "label":  "Additional Paid in Capital, Common Stock",
                            "terseLabel":  "Additional paid-in capital"
                            }
                        }
                    },
                "localname":  "AdditionalPaidInCapitalCommonStock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AdditionalPaidInCapitalMember":  {
                "auth_ref":  [
                    "r129",
                    "r130",
                    "r131",
                    "r395",
                    "r396",
                    "r397"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders.",
                            "label":  "Additional Paid-in Capital [Member]",
                            "terseLabel":  "Additional Paid-In Capital (Deficit)"
                            }
                        }
                    },
                "localname":  "AdditionalPaidInCapitalMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature":  {
                "auth_ref":  [
                    "r305",
                    "r311",
                    "r438"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of increase (decrease) in additional paid in capital (APIC) resulting from recognition of deferred taxes for convertible debt with a beneficial conversion feature.",
                            "label":  "Adjustments to Additional Paid in Capital, Convertible Debt with Conversion Feature",
                            "verboseLabel":  "Increase in debt discount as a result of modification of Convertible Notes"
                            }
                        }
                    },
                "localname":  "AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue":  {
                "auth_ref":  [
                    "r362",
                    "r364",
                    "r401",
                    "r402"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.",
                            "label":  "APIC, Share-based Payment Arrangement, Increase for Cost Recognition",
                            "terseLabel":  "Stock-based compensation"
                            }
                        }
                    },
                "localname":  "AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]",
                            "terseLabel":  "Adjustments to reconcile net loss to net cash provided by operating activities:"
                            }
                        }
                    },
                "localname":  "AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_AdvertisingCostsPolicyTextBlock":  {
                "auth_ref":  [
                    "r404"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for advertising cost.",
                            "label":  "Advertising Cost [Policy Text Block]",
                            "terseLabel":  "Advertising"
                            }
                        }
                    },
                "localname":  "AdvertisingCostsPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_AdvertisingExpense":  {
                "auth_ref":  [
                    "r405"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.",
                            "label":  "Advertising Expense",
                            "terseLabel":  "Advertising expense"
                            }
                        }
                    },
                "localname":  "AdvertisingExpense",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESAdvertisingDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AgencySecuritiesMember":  {
                "auth_ref":  [
                    "r218"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Securities issued by government sponsored entities.",
                            "label":  "Agency Securities [Member]",
                            "terseLabel":  "Agency bonds"
                            }
                        }
                    },
                "localname":  "AgencySecuritiesMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_AllocatedShareBasedCompensationExpense":  {
                "auth_ref":  [
                    "r364",
                    "r391",
                    "r400"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of expense for award under share-based payment arrangement.  Excludes amount capitalized.",
                            "label":  "Share-based Payment Arrangement, Expense",
                            "terseLabel":  "Share-based compensation expense"
                            }
                        }
                    },
                "localname":  "AllocatedShareBasedCompensationExpense",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AllowanceForDoubtfulAccountsReceivable":  {
                "auth_ref":  [
                    "r201",
                    "r227",
                    "r229",
                    "r232"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of allowance for credit loss on accounts receivable.",
                            "label":  "Accounts Receivable, Allowance for Credit Loss",
                            "periodEndLabel":  "Accounts receivable allowance, Ending balance",
                            "periodStartLabel":  "Accounts receivable allowance, Beginning balance"
                            }
                        }
                    },
                "localname":  "AllowanceForDoubtfulAccountsReceivable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESAllowanceforCreditLossesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AllowanceForDoubtfulAccountsReceivableRollforward":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
                            "label":  "Accounts Receivable, Allowance for Credit Loss [Roll Forward]",
                            "terseLabel":  "Allowance for Doubtful Accounts - Reconciliation:"
                            }
                        }
                    },
                "localname":  "AllowanceForDoubtfulAccountsReceivableRollforward",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESAllowanceforCreditLossesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs":  {
                "auth_ref":  [
                    "r231"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of direct write-downs of accounts receivable charged against the allowance.",
                            "label":  "Accounts Receivable, Allowance for Credit Loss, Writeoff",
                            "negatedTerseLabel":  "Write-offs"
                            }
                        }
                    },
                "localname":  "AllowanceForDoubtfulAccountsReceivableWriteOffs",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESAllowanceforCreditLossesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AmortizationOfDebtDiscountPremium":  {
                "auth_ref":  [
                    "r86",
                    "r108",
                    "r535"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/DEBTScheduleofInterestExpenseRecognizedDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_InterestExpenseDebt",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments.  Excludes amortization of financing costs.  Alternate captions include noncash interest expense.",
                            "label":  "Amortization of Debt Discount (Premium)",
                            "terseLabel":  "Accretion of debt discount"
                            }
                        }
                    },
                "localname":  "AmortizationOfDebtDiscountPremium",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTScheduleofInterestExpenseRecognizedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AmortizationOfDeferredSalesCommissions":  {
                "auth_ref":  [
                    "r83",
                    "r108"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The amount of expense recognized in the current period for the periodic realization of capitalized fees that were paid to salespeople, distributors, brokers, and agents at the time of the conclusion of the sale.  As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.",
                            "label":  "Amortization of Deferred Sales Commissions",
                            "terseLabel":  "Commissions expense"
                            }
                        }
                    },
                "localname":  "AmortizationOfDeferredSalesCommissions",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AmortizationOfFinancingCosts":  {
                "auth_ref":  [
                    "r79",
                    "r108",
                    "r537"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/DEBTScheduleofInterestExpenseRecognizedDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_InterestExpenseDebt",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of amortization expense attributable to debt issuance costs.",
                            "label":  "Amortization of Debt Issuance Costs",
                            "terseLabel":  "Amortization of debt issuance costs"
                            }
                        }
                    },
                "localname":  "AmortizationOfFinancingCosts",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTScheduleofInterestExpenseRecognizedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AmortizationOfFinancingCostsAndDiscounts":  {
                "auth_ref":  [
                    "r108",
                    "r537"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.",
                            "label":  "Amortization of Debt Issuance Costs and Discounts",
                            "terseLabel":  "Accretion of debt discount and amortization of debt issuance costs"
                            }
                        }
                    },
                "localname":  "AmortizationOfFinancingCostsAndDiscounts",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AmortizationOfIntangibleAssets":  {
                "auth_ref":  [
                    "r108",
                    "r250",
                    "r257"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.  As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.",
                            "label":  "Amortization of Intangible Assets",
                            "terseLabel":  "Amortization expense"
                            }
                        }
                    },
                "localname":  "AmortizationOfIntangibleAssets",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLAdditionalInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount":  {
                "auth_ref":  [
                    "r149"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.",
                            "label":  "Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount",
                            "terseLabel":  "Total shares excluded from net loss per share (in shares)"
                            }
                        }
                    },
                "localname":  "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREAntidilutiveSharesExcludedFromCalculationDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis":  {
                "auth_ref":  [
                    "r149"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by type of antidilutive security.",
                            "label":  "Antidilutive Securities [Axis]",
                            "terseLabel":  "Antidilutive Securities [Axis]"
                            }
                        }
                    },
                "localname":  "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREAntidilutiveSharesExcludedFromCalculationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]",
                            "terseLabel":  "Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]"
                            }
                        }
                    },
                "localname":  "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREAntidilutiveSharesExcludedFromCalculationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_AntidilutiveSecuritiesNameDomain":  {
                "auth_ref":  [
                    "r149"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Incremental common shares attributable to securities that were not included in diluted earnings per share (EPS) because to do so would increase EPS amounts or decrease loss per share amounts for the period presented.",
                            "label":  "Antidilutive Securities, Name [Domain]",
                            "terseLabel":  "Antidilutive Securities, Name [Domain]"
                            }
                        }
                    },
                "localname":  "AntidilutiveSecuritiesNameDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREAntidilutiveSharesExcludedFromCalculationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_AssetBackedSecuritiesMember":  {
                "auth_ref":  [
                    "r212",
                    "r339"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Securities that are primarily serviced by the cash flows of a discrete pool of receivables or other financial assets for example, but not limited to, credit card receivables, car loans, recreational vehicle loans, and mobile home loans.",
                            "label":  "Asset-backed Securities [Member]",
                            "terseLabel":  "Asset-backed securities",
                            "verboseLabel":  "Asset-backed securities"
                            }
                        }
                    },
                "localname":  "AssetBackedSecuritiesMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_Assets":  {
                "auth_ref":  [
                    "r121",
                    "r176",
                    "r182",
                    "r189",
                    "r223",
                    "r478",
                    "r483",
                    "r519",
                    "r602",
                    "r630"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Sum of the carrying amounts as of the balance sheet date of all assets that are recognized.  Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.",
                            "label":  "Assets",
                            "totalLabel":  "Total assets"
                            }
                        }
                    },
                "localname":  "Assets",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AssetsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Assets [Abstract]",
                            "terseLabel":  "Assets"
                            }
                        }
                    },
                "localname":  "AssetsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_AssetsCurrent":  {
                "auth_ref":  [
                    "r3",
                    "r4",
                    "r52",
                    "r121",
                    "r223",
                    "r478",
                    "r483",
                    "r519"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  7.0,
                        "parentTag":  "us-gaap_Assets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer).  Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.",
                            "label":  "Assets, Current",
                            "totalLabel":  "Total current assets"
                            }
                        }
                    },
                "localname":  "AssetsCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax":  {
                "auth_ref":  [
                    "r208"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
                            "label":  "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax",
                            "terseLabel":  "Unrealized Gains"
                            }
                        }
                    },
                "localname":  "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax":  {
                "auth_ref":  [
                    "r209"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
                            "label":  "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax",
                            "negatedTerseLabel":  "Unrealized Losses"
                            }
                        }
                    },
                "localname":  "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis":  {
                "auth_ref":  [
                    "r206",
                    "r237"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
                            "label":  "Debt Securities, Available-for-sale, Amortized Cost",
                            "totalLabel":  "Amortized Cost"
                            }
                        }
                    },
                "localname":  "AvailableForSaleDebtSecuritiesAmortizedCostBasis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AvailableForSaleSecuritiesDebtSecurities":  {
                "auth_ref":  [
                    "r204",
                    "r207",
                    "r237",
                    "r610"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis",
                        "weight":  1.0
                        },
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_FairValueNetAssetLiability",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
                            "label":  "Debt Securities, Available-for-sale",
                            "terseLabel":  "Fair Value",
                            "verboseLabel":  "Investments"
                            }
                        }
                    },
                "localname":  "AvailableForSaleSecuritiesDebtSecurities",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSLongTermInvestmentsDetails",
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AwardTypeAxis":  {
                "auth_ref":  [
                    "r365",
                    "r394"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by type of award under share-based payment arrangement.",
                            "label":  "Award Type [Axis]",
                            "terseLabel":  "Award Type [Axis]"
                            }
                        }
                    },
                "localname":  "AwardTypeAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSStockOptionPricingModelDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_BalanceSheetLocationAxis":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by location on balance sheet (statement of financial position).",
                            "label":  "Balance Sheet Location [Axis]",
                            "terseLabel":  "Balance Sheet Location [Axis]"
                            }
                        }
                    },
                "localname":  "BalanceSheetLocationAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSLongTermInvestmentsDetails",
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSDerivativeLiabilitiesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_BalanceSheetLocationDomain":  {
                "auth_ref":  [
                    "r491",
                    "r495"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Location in the balance sheet (statement of financial position).",
                            "label":  "Balance Sheet Location [Domain]",
                            "terseLabel":  "Balance Sheet Location [Domain]"
                            }
                        }
                    },
                "localname":  "BalanceSheetLocationDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSLongTermInvestmentsDetails",
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSDerivativeLiabilitiesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_BalanceSheetRelatedDisclosuresAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Balance Sheet Related Disclosures [Abstract]",
                            "terseLabel":  "Balance Sheet Related Disclosures [Abstract]"
                            }
                        }
                    },
                "localname":  "BalanceSheetRelatedDisclosuresAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_BusinessAcquisitionAcquireeDomain":  {
                "auth_ref":  [
                    "r357",
                    "r359"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Identification of the acquiree in a material business combination (or series of individually immaterial business combinations), which may include the name or other type of identification of the acquiree.",
                            "label":  "Business Acquisition, Acquiree [Domain]",
                            "terseLabel":  "Business Acquisition, Acquiree [Domain]"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionAcquireeDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSProFormaInformationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_BusinessAcquisitionAxis":  {
                "auth_ref":  [
                    "r357",
                    "r359",
                    "r460",
                    "r461"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by business combination or series of individually immaterial business combinations.",
                            "label":  "Business Acquisition [Axis]",
                            "terseLabel":  "Business Acquisition [Axis]"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSProFormaInformationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned":  {
                "auth_ref":  [
                    "r473"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.",
                            "label":  "Business Acquisition, Equity Interest Issued or Issuable, Value Assigned",
                            "terseLabel":  "Equity interest transferred"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued":  {
                "auth_ref":  [
                    "r473"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Number of shares of equity interests issued or issuable to acquire entity.",
                            "label":  "Business Acquisition, Equity Interest Issued or Issuable, Number of Shares",
                            "terseLabel":  "Equity interest transferred (in shares)"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_BusinessAcquisitionLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Business Acquisition [Line Items]",
                            "terseLabel":  "Business Acquisition [Line Items]"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSProFormaInformationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired":  {
                "auth_ref":  [
                    "r456"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Percentage of voting equity interests acquired at the acquisition date in the business combination.",
                            "label":  "Business Acquisition, Percentage of Voting Interests Acquired",
                            "terseLabel":  "Equity interest acquired (in percent)"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionPercentageOfVotingInterestsAcquired",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_BusinessAcquisitionProFormaInformationAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Business Acquisition, Pro Forma Information [Abstract]"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionProFormaInformationAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_BusinessAcquisitionProFormaInformationTextBlock":  {
                "auth_ref":  [
                    "r458",
                    "r459"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate.",
                            "label":  "Business Acquisition, Pro Forma Information [Table Text Block]",
                            "terseLabel":  "Pro Forma Results"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionProFormaInformationTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount":  {
                "auth_ref":  [
                    "r474"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.",
                            "label":  "Business Acquisition, Goodwill, Expected Tax Deductible Amount",
                            "terseLabel":  "Expected tax deductible amount of goodwill acquired"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss":  {
                "auth_ref":  [
                    "r458",
                    "r459"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.",
                            "label":  "Business Acquisition, Pro Forma Net Income (Loss)",
                            "terseLabel":  "Net loss"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionsProFormaNetIncomeLoss",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSProFormaInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessAcquisitionsProFormaRevenue":  {
                "auth_ref":  [
                    "r458",
                    "r459"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.",
                            "label":  "Business Acquisition, Pro Forma Revenue",
                            "terseLabel":  "Revenue"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionsProFormaRevenue",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSProFormaInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationAcquisitionRelatedCosts":  {
                "auth_ref":  [
                    "r455"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_OperatingExpenses",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period.  Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.",
                            "label":  "Business Combination, Acquisition Related Costs",
                            "terseLabel":  "Acquisition-related and integration"
                            }
                        }
                    },
                "localname":  "BusinessCombinationAcquisitionRelatedCosts",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationConsiderationTransferred1":  {
                "auth_ref":  [
                    "r469",
                    "r470",
                    "r471"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.",
                            "label":  "Business Combination, Consideration Transferred",
                            "terseLabel":  "Purchase Price"
                            }
                        }
                    },
                "localname":  "BusinessCombinationConsiderationTransferred1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationDisclosureTextBlock":  {
                "auth_ref":  [
                    "r475"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities.  The disclosure may include leverage buyout transactions (as applicable).",
                            "label":  "Business Combination Disclosure [Text Block]",
                            "terseLabel":  "BUSINESS COMBINATIONS"
                            }
                        }
                    },
                "localname":  "BusinessCombinationDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONS"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual":  {
                "auth_ref":  [
                    "r457"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.",
                            "label":  "Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual",
                            "terseLabel":  "Revenue"
                            }
                        }
                    },
                "localname":  "BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred":  {
                "auth_ref":  [
                    "r465"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to items of consideration transferred in connection with a business combination for which the initial accounting was incomplete.",
                            "label":  "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred",
                            "negatedTotalLabel":  "Total Purchase Consideration, Measurement Period Adjustments"
                            }
                        }
                    },
                "localname":  "BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialAssets":  {
                "auth_ref":  [
                    "r465"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to financial assets acquired in connection with a business combination for which the initial accounting was incomplete.",
                            "label":  "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets",
                            "totalLabel":  "Total assets, Measurement Period Adjustments"
                            }
                        }
                    },
                "localname":  "BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialAssets",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialLiabilities":  {
                "auth_ref":  [
                    "r465"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to financial liabilities assumed in connection with a business combination for which the initial accounting was incomplete.",
                            "label":  "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities",
                            "totalLabel":  "Total liabilities, Measurement Period Adjustments"
                            }
                        }
                    },
                "localname":  "BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialLiabilities",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents":  {
                "auth_ref":  [
                    "r463"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  7.0,
                        "parentTag":  "csod_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTotalAssetsAndGoodwill",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date.  Includes other kinds of accounts that have the general characteristics of demand deposits.  Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents",
                            "terseLabel":  "Cash and cash equivalents"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets":  {
                "auth_ref":  [
                    "r463"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  4.0,
                        "parentTag":  "csod_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTotalAssetsAndGoodwill",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets",
                            "terseLabel":  "Prepaid expenses and other current assets"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables":  {
                "auth_ref":  [
                    "r463"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  5.0,
                        "parentTag":  "csod_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTotalAssetsAndGoodwill",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables",
                            "terseLabel":  "Accounts receivable"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue":  {
                "auth_ref":  [
                    "r463"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
                        "weight":  -1.0
                        },
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of deferred revenue expected to be recognized as such within one year or the normal operating cycle, if longer, assumed at the acquisition date.",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue",
                            "negatedLabel":  "Deferred revenue",
                            "terseLabel":  "Deferred revenue"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities":  {
                "auth_ref":  [
                    "r463"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
                        "weight":  -1.0
                        },
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities",
                            "negatedLabel":  "Deferred tax liabilities",
                            "terseLabel":  "Deferred tax liabilities, net"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles":  {
                "auth_ref":  [
                    "r462",
                    "r463"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
                        "weight":  1.0
                        },
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  1.0,
                        "parentTag":  "csod_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTotalAssetsAndGoodwill",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The amount of identifiable intangible assets recognized as of the acquisition date.",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles",
                            "terseLabel":  "Intangible assets",
                            "verboseLabel":  "Intangible assets"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities":  {
                "auth_ref":  [
                    "r463"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of liabilities assumed at the acquisition date.",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities",
                            "totalLabel":  "Total liabilities"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther":  {
                "auth_ref":  [
                    "r463"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other",
                            "terseLabel":  "Other liabilities"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets":  {
                "auth_ref":  [
                    "r463"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  6.0,
                        "parentTag":  "csod_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTotalAssetsAndGoodwill",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets",
                            "terseLabel":  "Other assets"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment":  {
                "auth_ref":  [
                    "r462",
                    "r463"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
                        "weight":  1.0
                        },
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  8.0,
                        "parentTag":  "csod_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTotalAssetsAndGoodwill",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The amount of property, plant, and equipment recognized as of the acquisition date.",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment",
                            "terseLabel":  "Tangible assets",
                            "verboseLabel":  "Property and equipment"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet":  {
                "auth_ref":  [
                    "r463"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        },
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net",
                            "totalLabel":  "Total purchase consideration"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Business Combinations [Abstract]",
                            "terseLabel":  "Business Combinations [Abstract]"
                            }
                        }
                    },
                "localname":  "BusinessCombinationsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_BusinessCombinationsPolicy":  {
                "auth_ref":  [
                    "r117",
                    "r453"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for completed business combinations (purchase method, acquisition method or combination of entities under common control).  This accounting policy may include a general discussion of the purchase method or acquisition method of accounting (including for example, the treatment accorded contingent consideration, the identification of assets and liabilities, the purchase price allocation process, how the fair values of acquired assets and liabilities are determined) and the entity's specific application thereof.  An entity that acquires another entity in a leveraged buyout transaction generally discloses the accounting policy followed by the acquiring entity in determining the basis used to value its interest in the acquired entity, and the rationale for that accounting policy.",
                            "label":  "Business Combinations Policy [Policy Text Block]",
                            "terseLabel":  "Business Combinations"
                            }
                        }
                    },
                "localname":  "BusinessCombinationsPolicy",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_CapitalizedComputerSoftwareAdditions":  {
                "auth_ref":  [
                    "r251"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Additions made to capitalized computer software costs during the period.",
                            "label":  "Capitalized Computer Software, Additions",
                            "terseLabel":  "Capitalized software costs, amount capitalized during the period"
                            }
                        }
                    },
                "localname":  "CapitalizedComputerSoftwareAdditions",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CapitalizedComputerSoftwareAmortization1":  {
                "auth_ref":  [
                    "r674",
                    "r676"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of expense for amortization of capitalized computer software costs.",
                            "label":  "Capitalized Computer Software, Amortization",
                            "terseLabel":  "Amortization of capitalized software costs"
                            }
                        }
                    },
                "localname":  "CapitalizedComputerSoftwareAmortization1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CapitalizedComputerSoftwareNet":  {
                "auth_ref":  [
                    "r673"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_Assets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.",
                            "label":  "Capitalized Computer Software, Net",
                            "terseLabel":  "Capitalized software development costs, net"
                            }
                        }
                    },
                "localname":  "CapitalizedComputerSoftwareNet",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_Cash":  {
                "auth_ref":  [
                    "r33",
                    "r652",
                    "r653"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of currency on hand as well as demand deposits with banks or financial institutions.  Includes other kinds of accounts that have the general characteristics of demand deposits.  Excludes cash and cash equivalents within disposal group and discontinued operation.",
                            "label":  "Cash",
                            "terseLabel":  "Cash"
                            }
                        }
                    },
                "localname":  "Cash",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CashAndCashEquivalentsAtCarryingValue":  {
                "auth_ref":  [
                    "r1",
                    "r33",
                    "r110"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_AssetsCurrent",
                        "weight":  1.0
                        },
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of currency on hand as well as demand deposits with banks or financial institutions.  Includes other kinds of accounts that have the general characteristics of demand deposits.  Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.  Excludes cash and cash equivalents within disposal group and discontinued operation.",
                            "label":  "Cash and Cash Equivalents, at Carrying Value",
                            "terseLabel":  "Cash and cash equivalents"
                            }
                        }
                    },
                "localname":  "CashAndCashEquivalentsAtCarryingValue",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS",
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CashAndCashEquivalentsFairValueDisclosure":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_FairValueNetAssetLiability",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Fair value portion of currency on hand as well as demand deposits with banks or financial institutions.  Includes other kinds of accounts that have the general characteristics of demand deposits.  Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
                            "label":  "Cash and Cash Equivalents, Fair Value Disclosure",
                            "terseLabel":  "Cash equivalents"
                            }
                        }
                    },
                "localname":  "CashAndCashEquivalentsFairValueDisclosure",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CashAndCashEquivalentsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Currency on hand as well as demand deposits with banks or financial institutions.  Includes other kinds of accounts that have the general characteristics of demand deposits.  Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
                            "label":  "Cash and Cash Equivalents [Member]",
                            "terseLabel":  "Total cash and cash equivalents"
                            }
                        }
                    },
                "localname":  "CashAndCashEquivalentsMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy":  {
                "auth_ref":  [
                    "r10",
                    "r111",
                    "r117",
                    "r599"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Entity's cash and cash equivalents accounting policy with respect to restricted balances.  Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits.",
                            "label":  "Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]",
                            "terseLabel":  "Cash and Cash Equivalents and Restricted Cash"
                            }
                        }
                    },
                "localname":  "CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents":  {
                "auth_ref":  [
                    "r103",
                    "r110",
                    "r116"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage.  Excludes amount for disposal group and discontinued operations.  Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.  Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
                            "label":  "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents",
                            "periodEndLabel":  "Cash, cash equivalents, and restricted cash at end of period1",
                            "periodStartLabel":  "Cash, cash equivalents, and restricted cash at beginning of period",
                            "totalLabel":  "Total cash, cash equivalents, and restricted cash"
                            }
                        }
                    },
                "localname":  "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]",
                            "terseLabel":  "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]"
                            }
                        }
                    },
                "localname":  "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect":  {
                "auth_ref":  [
                    "r103",
                    "r524"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change.  Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.  Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
                            "label":  "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect",
                            "totalLabel":  "Net (decrease) increase in cash, cash equivalents, and restricted cash"
                            }
                        }
                    },
                "localname":  "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CashEquivalentsMember":  {
                "auth_ref":  [
                    "r10"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
                            "label":  "Cash Equivalents [Member]",
                            "terseLabel":  "Cash equivalents:"
                            }
                        }
                    },
                "localname":  "CashEquivalentsMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]",
                            "terseLabel":  "Non-cash investing and financing activities:"
                            }
                        }
                    },
                "localname":  "CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_CertificatesOfDepositMember":  {
                "auth_ref":  [
                    "r621"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Short to medium-term investment available at banks and savings and loan institutions where a customer agrees to lend money to the institution for a certain amount of time and is paid a predetermined rate of interest.  Certificates of deposit (CD) are typically Federal Deposit Insurance Corporation (FDIC) insured.",
                            "label":  "Certificates of Deposit [Member]",
                            "terseLabel":  "Certificates of deposit"
                            }
                        }
                    },
                "localname":  "CertificatesOfDepositMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_ClassOfStockDomain":  {
                "auth_ref":  [
                    "r119",
                    "r121",
                    "r142",
                    "r143",
                    "r144",
                    "r146",
                    "r148",
                    "r154",
                    "r155",
                    "r156",
                    "r223",
                    "r519"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Share of stock differentiated by the voting rights the holder receives.  Examples include, but are not limited to, common stock, redeemable preferred stock, nonredeemable preferred stock, and convertible stock.",
                            "label":  "Class of Stock [Domain]",
                            "terseLabel":  "Class of Stock [Domain]"
                            }
                        }
                    },
                "localname":  "ClassOfStockDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREAntidilutiveSharesExcludedFromCalculationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CommercialPaperMember":  {
                "auth_ref":  [
                    "r296"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Unsecured promissory note (generally negotiable) that provides institutions with short-term funds.",
                            "label":  "Commercial Paper [Member]",
                            "terseLabel":  "Commercial paper"
                            }
                        }
                    },
                "localname":  "CommercialPaperMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember":  {
                "auth_ref":  [
                    "r339",
                    "r512"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Unsecured promissory note (generally negotiable) that provides institutions with short-term funds that is excluded from cash and cash equivalents.",
                            "label":  "Commercial Paper, Not Included with Cash and Cash Equivalents [Member]",
                            "terseLabel":  "Commercial paper"
                            }
                        }
                    },
                "localname":  "CommercialPaperNotIncludedWithCashAndCashEquivalentsMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CommitmentsAndContingencies":  {
                "auth_ref":  [
                    "r49",
                    "r286",
                    "r611",
                    "r635"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_LiabilitiesAndStockholdersEquity",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.",
                            "label":  "Commitments and Contingencies",
                            "terseLabel":  "Commitments and contingencies (Note 14)"
                            }
                        }
                    },
                "localname":  "CommitmentsAndContingencies",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CommitmentsAndContingenciesDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Commitments and Contingencies Disclosure [Abstract]",
                            "terseLabel":  "Commitments and Contingencies Disclosure [Abstract]"
                            }
                        }
                    },
                "localname":  "CommitmentsAndContingenciesDisclosureAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock":  {
                "auth_ref":  [
                    "r283",
                    "r284",
                    "r285",
                    "r293"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for commitments and contingencies.",
                            "label":  "Commitments and Contingencies Disclosure [Text Block]",
                            "terseLabel":  "Commitments and Contingencies"
                            }
                        }
                    },
                "localname":  "CommitmentsAndContingenciesDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COMMITMENTSANDCONTINGENCIES"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_CommonStockMember":  {
                "auth_ref":  [
                    "r129",
                    "r130"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Stock that is subordinate to all other stock of the issuer.",
                            "label":  "Common Stock [Member]",
                            "terseLabel":  "Common Stock"
                            }
                        }
                    },
                "localname":  "CommonStockMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREAntidilutiveSharesExcludedFromCalculationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CommonStockParOrStatedValuePerShare":  {
                "auth_ref":  [
                    "r23"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Face amount or stated value per share of common stock.",
                            "label":  "Common Stock, Par or Stated Value Per Share",
                            "terseLabel":  "Common stock par value (usd per share)"
                            }
                        }
                    },
                "localname":  "CommonStockParOrStatedValuePerShare",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS",
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETSParenthetical",
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_CommonStockSharesAuthorized":  {
                "auth_ref":  [
                    "r23"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The maximum number of common shares permitted to be issued by an entity's charter and bylaws.",
                            "label":  "Common Stock, Shares Authorized",
                            "terseLabel":  "Common stock, shares authorized"
                            }
                        }
                    },
                "localname":  "CommonStockSharesAuthorized",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_CommonStockSharesIssued":  {
                "auth_ref":  [
                    "r23"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury).  These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized.  Shares issued include shares outstanding and shares held in the treasury.",
                            "label":  "Common Stock, Shares, Issued",
                            "terseLabel":  "Common stock, shares issued"
                            }
                        }
                    },
                "localname":  "CommonStockSharesIssued",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_CommonStockSharesOutstanding":  {
                "auth_ref":  [
                    "r23",
                    "r305"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Number of shares of common stock outstanding.  Common stock represent the ownership interest in a corporation.",
                            "label":  "Common Stock, Shares, Outstanding",
                            "terseLabel":  "Common stock, shares outstanding"
                            }
                        }
                    },
                "localname":  "CommonStockSharesOutstanding",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_CommonStockValueOutstanding":  {
                "auth_ref":  [
                    "r23"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_StockholdersEquity",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Value of all classes of common stock held by shareholders.  May be all or portion of the number of common shares authorized.  These shares exclude common shares repurchased by the entity and held as treasury shares.",
                            "label":  "Common Stock, Value, Outstanding",
                            "terseLabel":  "Common stock, $0.0001 par value"
                            }
                        }
                    },
                "localname":  "CommonStockValueOutstanding",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CompensationAndRetirementDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Retirement Benefits [Abstract]",
                            "terseLabel":  "Retirement Benefits [Abstract]"
                            }
                        }
                    },
                "localname":  "CompensationAndRetirementDisclosureAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_CompensationRelatedCostsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Compensation Related Costs [Abstract]"
                            }
                        }
                    },
                "localname":  "CompensationRelatedCostsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Components of Deferred Tax Assets and Liabilities [Abstract]",
                            "terseLabel":  "Components of Net Deferred Tax Asset (Liability)"
                            }
                        }
                    },
                "localname":  "ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ComprehensiveIncomeNetOfTax":  {
                "auth_ref":  [
                    "r67",
                    "r69",
                    "r70",
                    "r76",
                    "r614",
                    "r638"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity.  Excludes changes in equity resulting from investments by owners and distributions to owners.",
                            "label":  "Comprehensive Income (Loss), Net of Tax, Attributable to Parent",
                            "totalLabel":  "Total comprehensive loss"
                            }
                        }
                    },
                "localname":  "ComprehensiveIncomeNetOfTax",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ConcentrationRiskCreditRisk":  {
                "auth_ref":  [
                    "r160",
                    "r625"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for credit risk.",
                            "label":  "Concentration Risk, Credit Risk, Policy [Policy Text Block]",
                            "terseLabel":  "Concentration of Risk"
                            }
                        }
                    },
                "localname":  "ConcentrationRiskCreditRisk",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ConsolidationPolicyTextBlock":  {
                "auth_ref":  [
                    "r117",
                    "r480"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting.  The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.",
                            "label":  "Consolidation, Policy [Policy Text Block]",
                            "terseLabel":  "Basis of Presentation and Principles of Consolidation"
                            }
                        }
                    },
                "localname":  "ConsolidationPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ContractWithCustomerLiabilityRevenueRecognized":  {
                "auth_ref":  [
                    "r333"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.",
                            "label":  "Contract with Customer, Liability, Revenue Recognized",
                            "terseLabel":  "Revenue recognized"
                            }
                        }
                    },
                "localname":  "ContractWithCustomerLiabilityRevenueRecognized",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEFERREDREVENUEANDREMAININGPERFORMANCEOBLIGATIONSDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ContractualObligation":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.",
                            "label":  "Contractual Obligation",
                            "terseLabel":  "Contractual obligation"
                            }
                        }
                    },
                "localname":  "ContractualObligation",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COMMITMENTSANDCONTINGENCIESDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ConvertibleDebtFairValueDisclosures":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.",
                            "label":  "Convertible Debt, Fair Value Disclosures",
                            "terseLabel":  "Fair value of convertible debt"
                            }
                        }
                    },
                "localname":  "ConvertibleDebtFairValueDisclosures",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ConvertibleDebtMember":  {
                "auth_ref":  [
                    "r299"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.",
                            "label":  "Convertible Debt [Member]",
                            "terseLabel":  "Convertible Debt",
                            "verboseLabel":  "Convertible notes"
                            }
                        }
                    },
                "localname":  "ConvertibleDebtMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/DEBTScheduleofInterestExpenseRecognizedDetails",
                    "http://www.cornerstoneondemand.com/role/DEBTSummaryofNetCarryingAmountofDebtDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREAntidilutiveSharesExcludedFromCalculationDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESConvertibleNotesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_ConvertibleDebtNoncurrent":  {
                "auth_ref":  [
                    "r47"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_Liabilities",
                        "weight":  1.0
                        },
                    "http://www.cornerstoneondemand.com/role/DEBTSummaryofNetCarryingAmountofDebtDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Carrying amount of long-term convertible debt as of the balance sheet date, net of the amount due in the next twelve months or greater than the normal operating cycle, if longer.  The debt is convertible into another form of financial instrument, typically the entity's common stock.",
                            "label":  "Convertible Debt, Noncurrent",
                            "terseLabel":  "Debt, net of current portion",
                            "totalLabel":  "Net carrying value"
                            }
                        }
                    },
                "localname":  "ConvertibleDebtNoncurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS",
                    "http://www.cornerstoneondemand.com/role/DEBTSummaryofNetCarryingAmountofDebtDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ConvertibleDebtTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of borrowings which can be exchanged for a specified number of another security at the option of the issuer or the holder.  Disclosures include, but are not limited to, principal amount, amortized premium or discount, and amount of liability and equity components.",
                            "label":  "Convertible Debt [Table Text Block]",
                            "terseLabel":  "Summary of Net Carrying Amount of Debt"
                            }
                        }
                    },
                "localname":  "ConvertibleDebtTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_CorporateBondSecuritiesMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "This category includes information about long-term debt securities that are issued by either a domestic or foreign corporate business entity with a date certain promise of repayment and a return to the holder for the time value of money (for example, variable or fixed interest, original issue discount).",
                            "label":  "Corporate Bond Securities [Member]",
                            "terseLabel":  "Corporate bonds"
                            }
                        }
                    },
                "localname":  "CorporateBondSecuritiesMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CostOfGoodsAndServicesSold":  {
                "auth_ref":  [
                    "r82",
                    "r594"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_GrossProfit",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period.  This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.",
                            "label":  "Cost of Goods and Services Sold",
                            "terseLabel":  "Cost of revenue"
                            }
                        }
                    },
                "localname":  "CostOfGoodsAndServicesSold",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CostOfSalesMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Primary financial statement caption encompassing cost of sales.",
                            "label":  "Cost of Sales [Member]",
                            "terseLabel":  "Cost of revenue"
                            }
                        }
                    },
                "localname":  "CostOfSalesMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock":  {
                "auth_ref":  [
                    "r117",
                    "r274",
                    "r275",
                    "r281"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for recognizing and reporting costs associated with exiting, disposing of, and restructuring certain operations.",
                            "label":  "Costs Associated with Exit or Disposal Activities or Restructurings, Policy [Policy Text Block]",
                            "terseLabel":  "Restructuring"
                            }
                        }
                    },
                "localname":  "CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_CreditFacilityAxis":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by type of credit facility.  Credit facilities provide capital to borrowers without the need to structure a loan for each borrowing.",
                            "label":  "Credit Facility [Axis]",
                            "terseLabel":  "Credit Facility [Axis]"
                            }
                        }
                    },
                "localname":  "CreditFacilityAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COMMITMENTSANDCONTINGENCIESDetails",
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_CreditFacilityDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Type of credit facility.  Credit facilities provide capital to borrowers without the need to structure a loan for each borrowing.",
                            "label":  "Credit Facility [Domain]",
                            "terseLabel":  "Credit Facility [Domain]"
                            }
                        }
                    },
                "localname":  "CreditFacilityDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COMMITMENTSANDCONTINGENCIESDetails",
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CurrentFederalTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r122",
                    "r434",
                    "r443"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_CurrentIncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.",
                            "label":  "Current Federal Tax Expense (Benefit)",
                            "terseLabel":  "Federal"
                            }
                        }
                    },
                "localname":  "CurrentFederalTaxExpenseBenefit",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CurrentForeignTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r125",
                    "r434"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_CurrentIncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.",
                            "label":  "Current Foreign Tax Expense (Benefit)",
                            "terseLabel":  "Foreign"
                            }
                        }
                    },
                "localname":  "CurrentForeignTaxExpenseBenefit",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CurrentIncomeTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r122",
                    "r434",
                    "r443",
                    "r445"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_IncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.",
                            "label":  "Current Income Tax Expense (Benefit)",
                            "totalLabel":  "Total current income tax provision"
                            }
                        }
                    },
                "localname":  "CurrentIncomeTaxExpenseBenefit",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Current Income Tax Expense (Benefit), Continuing Operations [Abstract]",
                            "terseLabel":  "Current income tax provision:"
                            }
                        }
                    },
                "localname":  "CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_CurrentStateAndLocalTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r122",
                    "r434",
                    "r443"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_CurrentIncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.",
                            "label":  "Current State and Local Tax Expense (Benefit)",
                            "terseLabel":  "State"
                            }
                        }
                    },
                "localname":  "CurrentStateAndLocalTaxExpenseBenefit",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CustomerContractsMember":  {
                "auth_ref":  [
                    "r468"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Entity's established relationships with its customers through contracts.",
                            "label":  "Customer Contracts [Member]",
                            "terseLabel":  "Customer contracts"
                            }
                        }
                    },
                "localname":  "CustomerContractsMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CustomerRelatedIntangibleAssetsMember":  {
                "auth_ref":  [
                    "r466"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Customer-related asset, including, but not limited to, customer lists, and noncontractual customer relationships.",
                            "label":  "Customer-Related Intangible Assets [Member]",
                            "terseLabel":  "Customer contracts"
                            }
                        }
                    },
                "localname":  "CustomerRelatedIntangibleAssetsMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CustomerRelationshipsMember":  {
                "auth_ref":  [
                    "r468"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Customer relationship that exists between an entity and its customer, for example, but not limited to, tenant relationships.",
                            "label":  "Customer Relationships [Member]",
                            "terseLabel":  "Customer relationships"
                            }
                        }
                    },
                "localname":  "CustomerRelationshipsMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_DebtDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Debt Disclosure [Abstract]",
                            "terseLabel":  "Debt Disclosure [Abstract]"
                            }
                        }
                    },
                "localname":  "DebtDisclosureAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DebtDisclosureTextBlock":  {
                "auth_ref":  [
                    "r304"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.",
                            "label":  "Debt Disclosure [Text Block]",
                            "terseLabel":  "DEBT"
                            }
                        }
                    },
                "localname":  "DebtDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBT"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_DebtInstrumentAxis":  {
                "auth_ref":  [
                    "r14",
                    "r16",
                    "r17",
                    "r603",
                    "r606",
                    "r627"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by type of debt instrument, including, but not limited to, draws against credit facilities.",
                            "label":  "Debt Instrument [Axis]",
                            "terseLabel":  "Debt Instrument [Axis]"
                            }
                        }
                    },
                "localname":  "DebtInstrumentAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESConvertibleNotesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DebtInstrumentBasisSpreadOnVariableRate1":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Percentage points added to the reference rate to compute the variable rate on the debt instrument.",
                            "label":  "Debt Instrument, Basis Spread on Variable Rate",
                            "terseLabel":  "Basis spread on variable rate"
                            }
                        }
                    },
                "localname":  "DebtInstrumentBasisSpreadOnVariableRate1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_DebtInstrumentCarryingAmount":  {
                "auth_ref":  [
                    "r17",
                    "r300",
                    "r606",
                    "r627"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/DEBTSummaryofNetCarryingAmountofDebtDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_ConvertibleDebtNoncurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt.  Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.",
                            "label":  "Long-term Debt, Gross",
                            "terseLabel":  "Principal amount"
                            }
                        }
                    },
                "localname":  "DebtInstrumentCarryingAmount",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTSummaryofNetCarryingAmountofDebtDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DebtInstrumentConvertibleConversionPrice1":  {
                "auth_ref":  [
                    "r301"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The price per share of the conversion feature embedded in the debt instrument.",
                            "label":  "Debt Instrument, Convertible, Conversion Price",
                            "terseLabel":  "Conversion price (USD per share)"
                            }
                        }
                    },
                "localname":  "DebtInstrumentConvertibleConversionPrice1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_DebtInstrumentConvertibleConversionRatio1":  {
                "auth_ref":  [
                    "r46",
                    "r306",
                    "r307",
                    "r309"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.",
                            "label":  "Debt Instrument, Convertible, Conversion Ratio",
                            "terseLabel":  "Conversion ratio"
                            }
                        }
                    },
                "localname":  "DebtInstrumentConvertibleConversionRatio1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "pureItemType"
                },
            "us-gaap_DebtInstrumentFaceAmount":  {
                "auth_ref":  [
                    "r536",
                    "r538"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Face (par) amount of debt instrument at time of issuance.",
                            "label":  "Debt Instrument, Face Amount",
                            "terseLabel":  "Debt issued, face amount"
                            }
                        }
                    },
                "localname":  "DebtInstrumentFaceAmount",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESConvertibleNotesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DebtInstrumentInterestRateEffectivePercentage":  {
                "auth_ref":  [
                    "r45",
                    "r302",
                    "r536"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.",
                            "label":  "Debt Instrument, Interest Rate, Effective Percentage",
                            "terseLabel":  "Effective interest rate"
                            }
                        }
                    },
                "localname":  "DebtInstrumentInterestRateEffectivePercentage",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_DebtInstrumentInterestRateStatedPercentage":  {
                "auth_ref":  [
                    "r45"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Contractual interest rate for funds borrowed, under the debt agreement.",
                            "label":  "Debt Instrument, Interest Rate, Stated Percentage",
                            "terseLabel":  "Interest rate on convertible notes issued"
                            }
                        }
                    },
                "localname":  "DebtInstrumentInterestRateStatedPercentage",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESConvertibleNotesDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_DebtInstrumentLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Debt Instrument [Line Items]",
                            "terseLabel":  "Debt Instrument [Line Items]"
                            }
                        }
                    },
                "localname":  "DebtInstrumentLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/DEBTScheduleofInterestExpenseRecognizedDetails",
                    "http://www.cornerstoneondemand.com/role/DEBTSummaryofNetCarryingAmountofDebtDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESConvertibleNotesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DebtInstrumentNameDomain":  {
                "auth_ref":  [
                    "r47"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The name for the particular debt instrument or borrowing that distinguishes it from other debt instruments or borrowings, including draws against credit facilities.",
                            "label":  "Debt Instrument, Name [Domain]",
                            "terseLabel":  "Debt Instrument, Name [Domain]"
                            }
                        }
                    },
                "localname":  "DebtInstrumentNameDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESConvertibleNotesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_DebtInstrumentRedemptionPricePercentage":  {
                "auth_ref":  [
                    "r622"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.",
                            "label":  "Debt Instrument, Redemption Price, Percentage",
                            "terseLabel":  "Repurchase price of notes"
                            }
                        }
                    },
                "localname":  "DebtInstrumentRedemptionPricePercentage",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESConvertibleNotesDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_DebtInstrumentTable":  {
                "auth_ref":  [
                    "r47",
                    "r123",
                    "r306",
                    "r308",
                    "r309",
                    "r310",
                    "r535",
                    "r536",
                    "r538",
                    "r623"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "A table or schedule providing information pertaining to long-term debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation.  These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.",
                            "label":  "Schedule of Long-term Debt Instruments [Table]",
                            "terseLabel":  "Schedule of Long-term Debt Instruments [Table]"
                            }
                        }
                    },
                "localname":  "DebtInstrumentTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/DEBTScheduleofInterestExpenseRecognizedDetails",
                    "http://www.cornerstoneondemand.com/role/DEBTSummaryofNetCarryingAmountofDebtDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESConvertibleNotesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DebtInstrumentTerm":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
                            "label":  "Debt Instrument, Term",
                            "terseLabel":  "Debt instrument, term"
                            }
                        }
                    },
                "localname":  "DebtInstrumentTerm",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESConvertibleNotesDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_DebtInstrumentUnamortizedDiscount":  {
                "auth_ref":  [
                    "r535",
                    "r538"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/DEBTSummaryofNetCarryingAmountofDebtDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_ConvertibleDebtNoncurrent",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, after accumulated amortization, of debt discount.",
                            "label":  "Debt Instrument, Unamortized Discount",
                            "negatedTerseLabel":  "Unaccreted debt discount",
                            "terseLabel":  "Debt discount recorded"
                            }
                        }
                    },
                "localname":  "DebtInstrumentUnamortizedDiscount",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/DEBTSummaryofNetCarryingAmountofDebtDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DebtPolicyTextBlock":  {
                "auth_ref":  [
                    "r117",
                    "r297"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy related to debt.  Includes, but is not limited to, debt issuance costs, the effects of refinancings, method of amortizing debt issuance costs and original issue discount, and classifications of debt.",
                            "label":  "Debt, Policy [Policy Text Block]",
                            "terseLabel":  "Convertible Notes, Term Loan B, and Revolving Credit Facility"
                            }
                        }
                    },
                "localname":  "DebtPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_DebtSecuritiesAvailableForSaleTable":  {
                "auth_ref":  [
                    "r218"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of information about investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
                            "label":  "Debt Securities, Available-for-sale [Table]",
                            "terseLabel":  "Debt Securities, Available-for-sale [Table]"
                            }
                        }
                    },
                "localname":  "DebtSecuritiesAvailableForSaleTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSLongTermInvestmentsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DeferredCosts":  {
                "auth_ref":  [
                    "r13",
                    "r601",
                    "r629"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  8.0,
                        "parentTag":  "us-gaap_Assets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of deferred cost, excluding capitalized cost related to contract with customer; classified as noncurrent.",
                            "label":  "Deferred Costs, Noncurrent",
                            "terseLabel":  "Deferred commissions, net of current portion"
                            }
                        }
                    },
                "localname":  "DeferredCosts",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredCostsCurrent":  {
                "auth_ref":  [
                    "r51"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_AssetsCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Sum of the carrying amounts as of the balance sheet date of deferred costs capitalized at the end of the reporting period that are expected to be charged against earnings within one year or the normal operating cycle, if longer.",
                            "label":  "Deferred Costs, Current",
                            "terseLabel":  "Deferred commissions, current portion"
                            }
                        }
                    },
                "localname":  "DeferredCostsCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredCreditsAndOtherLiabilitiesCurrent":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_LiabilitiesCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Carrying amount as of the balance sheet date of unearned revenue or income, not otherwise specified in the taxonomy, which is expected to be taken into income during the current period and current obligations not separately disclosed in the balance sheet (other liabilities, current).",
                            "label":  "Deferred Credits and Other Liabilities, Current",
                            "terseLabel":  "Deferred revenue, current portion"
                            }
                        }
                    },
                "localname":  "DeferredCreditsAndOtherLiabilitiesCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredCreditsAndOtherLiabilitiesNoncurrent":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_Liabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Carrying amount as of the balance sheet date of unearned revenue or income, not otherwise specified in the taxonomy, which is expected to be taken into income after one year or beyond the normal operating cycle, if longer and noncurrent obligations not separately disclosed in the balance sheet (other liabilities, noncurrent).",
                            "label":  "Deferred Credits and Other Liabilities, Noncurrent",
                            "terseLabel":  "Deferred revenue, net of current portion"
                            }
                        }
                    },
                "localname":  "DeferredCreditsAndOtherLiabilitiesNoncurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredFederalIncomeTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r122",
                    "r435",
                    "r443"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_DeferredIncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.",
                            "label":  "Deferred Federal Income Tax Expense (Benefit)",
                            "terseLabel":  "Federal"
                            }
                        }
                    },
                "localname":  "DeferredFederalIncomeTaxExpenseBenefit",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredFinanceCostsNet":  {
                "auth_ref":  [
                    "r38",
                    "r537"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/DEBTSummaryofNetCarryingAmountofDebtDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_ConvertibleDebtNoncurrent",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, after accumulated amortization, of debt issuance costs.  Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.",
                            "label":  "Debt Issuance Costs, Net",
                            "negatedTerseLabel":  "Unamortized debt issuance costs",
                            "terseLabel":  "Transaction costs related to the issuance of Notes"
                            }
                        }
                    },
                "localname":  "DeferredFinanceCostsNet",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/DEBTSummaryofNetCarryingAmountofDebtDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredForeignIncomeTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r122",
                    "r435",
                    "r443"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_DeferredIncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.",
                            "label":  "Deferred Foreign Income Tax Expense (Benefit)",
                            "terseLabel":  "Foreign"
                            }
                        }
                    },
                "localname":  "DeferredForeignIncomeTaxExpenseBenefit",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredIncomeTaxAssetsNet":  {
                "auth_ref":  [
                    "r412",
                    "r413"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  10.0,
                        "parentTag":  "us-gaap_Assets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.",
                            "label":  "Deferred Income Tax Assets, Net",
                            "terseLabel":  "Deferred tax assets"
                            }
                        }
                    },
                "localname":  "DeferredIncomeTaxAssetsNet",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredIncomeTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r108",
                    "r122",
                    "r435",
                    "r443",
                    "r444",
                    "r445"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_IncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.",
                            "label":  "Deferred Income Tax Expense (Benefit)",
                            "totalLabel":  "Total deferred income tax benefit"
                            }
                        }
                    },
                "localname":  "DeferredIncomeTaxExpenseBenefit",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]",
                            "terseLabel":  "Deferred income tax benefit:"
                            }
                        }
                    },
                "localname":  "DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DeferredIncomeTaxLiabilities":  {
                "auth_ref":  [
                    "r19",
                    "r20",
                    "r424",
                    "r604",
                    "r626"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_DeferredTaxAssetsLiabilitiesNet",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of deferred tax liability attributable to taxable temporary differences.",
                            "label":  "Deferred Tax Liabilities, Gross",
                            "negatedTotalLabel":  "Total deferred tax liabilities"
                            }
                        }
                    },
                "localname":  "DeferredIncomeTaxLiabilities",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredIncomeTaxLiabilitiesNet":  {
                "auth_ref":  [
                    "r412",
                    "r413"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_Liabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting.",
                            "label":  "Deferred Income Tax Liabilities, Net",
                            "terseLabel":  "Deferred tax liabilities"
                            }
                        }
                    },
                "localname":  "DeferredIncomeTaxLiabilitiesNet",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r122",
                    "r435",
                    "r443"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_DeferredIncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.",
                            "label":  "Deferred State and Local Income Tax Expense (Benefit)",
                            "terseLabel":  "State"
                            }
                        }
                    },
                "localname":  "DeferredStateAndLocalIncomeTaxExpenseBenefit",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetDomain":  {
                "auth_ref":  [
                    "r426"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Identification of the deferred tax asset for which a valuation reserve exists.",
                            "label":  "Deferred Tax Asset [Domain]",
                            "terseLabel":  "Deferred Tax Asset [Domain]"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESAdditionalInformationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_DeferredTaxAssetInterestCarryforward":  {
                "auth_ref":  [
                    "r432"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_DeferredTaxAssetsGross",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible interest carryforward.",
                            "label":  "Deferred Tax Asset, Interest Carryforward",
                            "terseLabel":  "Disallowed interest expense carryforward"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetInterestCarryforward",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsDeferredIncome":  {
                "auth_ref":  [
                    "r432",
                    "r433"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_DeferredTaxAssetsGross",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income.",
                            "label":  "Deferred Tax Assets, Deferred Income",
                            "terseLabel":  "Deferred revenue"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsDeferredIncome",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  7.0,
                        "parentTag":  "us-gaap_DeferredTaxAssetsGross",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill.",
                            "label":  "Deferred Tax Assets, Goodwill and Intangible Assets",
                            "terseLabel":  "Long-lived intangible assets and fixed assets - basis difference"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsGoodwillAndIntangibleAssets",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsGross":  {
                "auth_ref":  [
                    "r425"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_DeferredTaxAssetsNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.",
                            "label":  "Deferred Tax Assets, Gross",
                            "totalLabel":  "Total deferred tax assets"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsGross",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsGrossAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Deferred Tax Assets, Gross [Abstract]",
                            "terseLabel":  "Deferred tax assets:"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsGrossAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DeferredTaxAssetsLiabilitiesNet":  {
                "auth_ref":  [
                    "r427"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.",
                            "label":  "Deferred Tax Assets, Net",
                            "totalLabel":  "Net deferred tax assets"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsLiabilitiesNet",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsNet":  {
                "auth_ref":  [
                    "r427"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_DeferredTaxAssetsLiabilitiesNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.",
                            "label":  "Deferred Tax Assets, Net of Valuation Allowance",
                            "totalLabel":  "Deferred tax assets, net of valuation allowance"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsNet",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsOperatingLossCarryforwards":  {
                "auth_ref":  [
                    "r432",
                    "r433"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_DeferredTaxAssetsGross",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.",
                            "label":  "Deferred Tax Assets, Operating Loss Carryforwards",
                            "terseLabel":  "Net operating loss carryforwards"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsOperatingLossCarryforwards",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsOther":  {
                "auth_ref":  [
                    "r432",
                    "r433"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  8.0,
                        "parentTag":  "us-gaap_DeferredTaxAssetsGross",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.",
                            "label":  "Deferred Tax Assets, Other",
                            "terseLabel":  "Other"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsOther",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost":  {
                "auth_ref":  [
                    "r432",
                    "r433"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_DeferredTaxAssetsGross",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.",
                            "label":  "Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost",
                            "terseLabel":  "Stock-based compensation"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities":  {
                "auth_ref":  [
                    "r432",
                    "r433"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_DeferredTaxAssetsGross",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities.",
                            "label":  "Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities",
                            "terseLabel":  "Accrued expenses"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsValuationAllowance":  {
                "auth_ref":  [
                    "r426"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_DeferredTaxAssetsNet",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.",
                            "label":  "Deferred Tax Assets, Valuation Allowance",
                            "negatedTerseLabel":  "Valuation allowance"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsValuationAllowance",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxLiabilitiesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Deferred Tax Liabilities, Gross [Abstract]",
                            "terseLabel":  "Deferred tax liabilities:"
                            }
                        }
                    },
                "localname":  "DeferredTaxLiabilitiesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DeferredTaxLiabilitiesOther":  {
                "auth_ref":  [
                    "r432",
                    "r433"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_DeferredIncomeTaxLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of deferred tax liability attributable to taxable temporary differences classified as other.",
                            "label":  "Deferred Tax Liabilities, Other",
                            "negatedLabel":  "Other"
                            }
                        }
                    },
                "localname":  "DeferredTaxLiabilitiesOther",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofDeferredTaxAssetsandLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedContributionPlanCostRecognized":  {
                "auth_ref":  [
                    "r356"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cost for defined contribution plan.",
                            "label":  "Defined Contribution Plan, Cost",
                            "terseLabel":  "401(k) matching contribution expenses"
                            }
                        }
                    },
                "localname":  "DefinedContributionPlanCostRecognized",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/A401KSAVINGSPLANDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Percentage employer matches of the employee's percentage contribution matched.",
                            "label":  "Defined Contribution Plan, Employer Matching Contribution, Percent of Match",
                            "terseLabel":  "401(k) employer matching percentage"
                            }
                        }
                    },
                "localname":  "DefinedContributionPlanEmployerMatchingContributionPercentOfMatch",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/A401KSAVINGSPLANDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_Depreciation":  {
                "auth_ref":  [
                    "r108",
                    "r264"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives.  Includes production and non-production related depreciation.",
                            "label":  "Depreciation",
                            "terseLabel":  "Depreciation expense"
                            }
                        }
                    },
                "localname":  "Depreciation",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DepreciationDepletionAndAmortization":  {
                "auth_ref":  [
                    "r108",
                    "r174"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  12.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.",
                            "label":  "Depreciation, Depletion and Amortization",
                            "terseLabel":  "Depreciation and amortization"
                            }
                        }
                    },
                "localname":  "DepreciationDepletionAndAmortization",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DerivativeContractTypeDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Financial instrument or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.",
                            "label":  "Derivative Contract [Domain]",
                            "terseLabel":  "Derivative Contract [Domain]"
                            }
                        }
                    },
                "localname":  "DerivativeContractTypeDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSDerivativeLiabilitiesDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSIncomeforDerivativeInstrumentsDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_DerivativeFixedInterestRate":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Fixed interest rate related to the interest rate derivative.",
                            "label":  "Derivative, Fixed Interest Rate",
                            "terseLabel":  "Fixed rate on hedged portion (in percent)"
                            }
                        }
                    },
                "localname":  "DerivativeFixedInterestRate",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_DerivativeInstrumentRiskAxis":  {
                "auth_ref":  [
                    "r492",
                    "r494",
                    "r498",
                    "r501"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by type of derivative contract.",
                            "label":  "Derivative Instrument [Axis]",
                            "terseLabel":  "Derivative Instrument [Axis]"
                            }
                        }
                    },
                "localname":  "DerivativeInstrumentRiskAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSDerivativeLiabilitiesDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSIncomeforDerivativeInstrumentsDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Derivative Instruments and Hedging Activities Disclosures [Line Items]",
                            "terseLabel":  "Derivative Instruments and Hedging Activities Disclosures [Line Items]"
                            }
                        }
                    },
                "localname":  "DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSDerivativeLiabilitiesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of information about derivatives and hedging activities.",
                            "label":  "Derivative Instruments and Hedging Activities Disclosures [Table]",
                            "terseLabel":  "Derivative Instruments and Hedging Activities Disclosures [Table]"
                            }
                        }
                    },
                "localname":  "DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSDerivativeLiabilitiesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable":  {
                "auth_ref":  [
                    "r489",
                    "r492",
                    "r498",
                    "r501",
                    "r502",
                    "r505",
                    "r507"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of information about the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments.",
                            "label":  "Derivative Instruments, Gain (Loss) [Table]",
                            "terseLabel":  "Derivative Instruments, Gain (Loss) [Table]"
                            }
                        }
                    },
                "localname":  "DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSIncomeforDerivativeInstrumentsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DerivativeInstrumentsGainLossLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Derivative Instruments, Gain (Loss) [Line Items]",
                            "terseLabel":  "Derivative Instruments, Gain (Loss) [Line Items]"
                            }
                        }
                    },
                "localname":  "DerivativeInstrumentsGainLossLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSIncomeforDerivativeInstrumentsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DerivativeLiabilities":  {
                "auth_ref":  [
                    "r53",
                    "r54",
                    "r518"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_FairValueNetAssetLiability",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.  Includes liabilities not subject to a master netting arrangement and not elected to be offset.",
                            "label":  "Derivative Liability",
                            "negatedLabel":  "Derivative liability",
                            "negatedTerseLabel":  "Derivative Liabilities"
                            }
                        }
                    },
                "localname":  "DerivativeLiabilities",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSDerivativeLiabilitiesDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DerivativeNotionalAmount":  {
                "auth_ref":  [
                    "r486",
                    "r488"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Nominal or face amount used to calculate payment on derivative.",
                            "label":  "Derivative, Notional Amount",
                            "terseLabel":  "Notional amount"
                            }
                        }
                    },
                "localname":  "DerivativeNotionalAmount",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DerivativeTermOfContract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
                            "label":  "Derivative, Term of Contract",
                            "terseLabel":  "Derivative, term"
                            }
                        }
                    },
                "localname":  "DerivativeTermOfContract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_DerivativesPolicyTextBlock":  {
                "auth_ref":  [
                    "r117",
                    "r126",
                    "r485",
                    "r487",
                    "r489",
                    "r490",
                    "r504"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for its derivative instruments and hedging activities.",
                            "label":  "Derivatives, Policy [Policy Text Block]",
                            "terseLabel":  "Derivatives Instruments and Hedging Activities"
                            }
                        }
                    },
                "localname":  "DerivativesPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_DesignatedAsHedgingInstrumentMember":  {
                "auth_ref":  [
                    "r489"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Derivative instrument designated as hedging instrument under Generally Accepted Accounting Principles (GAAP).",
                            "label":  "Designated as Hedging Instrument [Member]",
                            "terseLabel":  "Designated as Hedging Instrument"
                            }
                        }
                    },
                "localname":  "DesignatedAsHedgingInstrumentMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSDerivativeLiabilitiesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock":  {
                "auth_ref":  [
                    "r403"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for share-based payment arrangement.",
                            "label":  "Share-based Payment Arrangement [Text Block]",
                            "terseLabel":  "STOCK-BASED AWARDS"
                            }
                        }
                    },
                "localname":  "DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDS"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Share-based Payment Arrangement [Abstract]",
                            "terseLabel":  "Share-based Payment Arrangement [Abstract]"
                            }
                        }
                    },
                "localname":  "DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DomesticCountryMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Designated tax department of the government that is entitled to levy and collect income taxes from the entity in its country of domicile.",
                            "label":  "Domestic Tax Authority [Member]",
                            "terseLabel":  "Federal Tax Authority"
                            }
                        }
                    },
                "localname":  "DomesticCountryMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESAdditionalInformationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_EarningsPerShareAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Earnings Per Share [Abstract]",
                            "terseLabel":  "Earnings Per Share [Abstract]"
                            }
                        }
                    },
                "localname":  "EarningsPerShareAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_EarningsPerShareBasicAndDiluted":  {
                "auth_ref":  [
                    "r147"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements.  Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period.  Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.",
                            "label":  "Earnings Per Share, Basic and Diluted",
                            "verboseLabel":  "Net loss per share \u2014 basic and diluted (usd per share)"
                            }
                        }
                    },
                "localname":  "EarningsPerShareBasicAndDiluted",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS",
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREBasicandDilutedLossPerShareDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_EarningsPerShareTextBlock":  {
                "auth_ref":  [
                    "r149",
                    "r150",
                    "r151",
                    "r152"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for earnings per share.",
                            "label":  "Earnings Per Share [Text Block]",
                            "terseLabel":  "NET LOSS PER SHARE"
                            }
                        }
                    },
                "localname":  "EarningsPerShareTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHARE"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents":  {
                "auth_ref":  [
                    "r524"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of increase (decrease) from effect of exchange rate changes on cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; held in foreign currencies.  Excludes amounts for disposal group and discontinued operations.  Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.  Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
                            "label":  "Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents",
                            "terseLabel":  "Effect of exchange rate changes on cash, cash equivalents, and restricted cash"
                            }
                        }
                    },
                "localname":  "EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount":  {
                "auth_ref":  [
                    "r392"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cost capitalized for award under share-based payment arrangement.",
                            "label":  "Share-based Payment Arrangement, Amount Capitalized",
                            "negatedLabel":  "Less: capitalized stock-based compensation",
                            "terseLabel":  "Capitalized stock-based compensation"
                            }
                        }
                    },
                "localname":  "EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]",
                            "terseLabel":  "Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]"
                            }
                        }
                    },
                "localname":  "EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized":  {
                "auth_ref":  [
                    "r393"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cost not yet recognized for nonvested award under share-based payment arrangement.",
                            "label":  "Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount",
                            "terseLabel":  "Unrecognized compensation expense"
                            }
                        }
                    },
                "localname":  "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1":  {
                "auth_ref":  [
                    "r393"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
                            "label":  "Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition",
                            "terseLabel":  "Unrecognized compensation expense, weighted-average period of recognition"
                            }
                        }
                    },
                "localname":  "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions":  {
                "auth_ref":  [
                    "r393"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cost to be recognized for nonvested award under share-based payment arrangement.  Excludes share and unit options.",
                            "label":  "Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount",
                            "terseLabel":  "Unrecognized compensation expense related to nonvested restricted stock units"
                            }
                        }
                    },
                "localname":  "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions":  {
                "auth_ref":  [
                    "r393"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cost to be recognized for option under share-based payment arrangement.",
                            "label":  "Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount",
                            "terseLabel":  "Unrecognized compensation expense related to options"
                            }
                        }
                    },
                "localname":  "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense":  {
                "auth_ref":  [
                    "r391"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of tax benefit for recognition of expense of award under share-based payment arrangement.",
                            "label":  "Share-based Payment Arrangement, Expense, Tax Benefit",
                            "terseLabel":  "Tax benefit from share based compensation"
                            }
                        }
                    },
                "localname":  "EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESShareBasedCompensationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_EmployeeSeveranceMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Termination of an employee associated with exit from or disposal of business activities or restructurings pursuant to a plan.",
                            "label":  "Employee Severance [Member]",
                            "terseLabel":  "Severance payments and termination benefits"
                            }
                        }
                    },
                "localname":  "EmployeeSeveranceMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURINGDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_EmployeeStockMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "An Employee Stock Purchase Plan is a tax-efficient means by which employees of a corporation can purchase the corporation's stock.",
                            "label":  "Employee Stock [Member]",
                            "terseLabel":  "ESPP"
                            }
                        }
                    },
                "localname":  "EmployeeStockMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_EmployeeStockOptionMember":  {
                "auth_ref":  [
                    "r389"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Share-based payment arrangement granting right, subject to vesting and other restrictions, to purchase or sell certain number of shares at predetermined price for specified period of time.",
                            "label":  "Share-based Payment Arrangement, Option [Member]",
                            "terseLabel":  "Options",
                            "verboseLabel":  "Incentive stock options"
                            }
                        }
                    },
                "localname":  "EmployeeStockOptionMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSStockOptionPricingModelDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_EquityAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Equity [Abstract]",
                            "terseLabel":  "Equity [Abstract]"
                            }
                        }
                    },
                "localname":  "EquityAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_EquityComponentDomain":  {
                "auth_ref":  [
                    "r129",
                    "r130",
                    "r131",
                    "r134",
                    "r139",
                    "r141",
                    "r153",
                    "r226",
                    "r305",
                    "r311",
                    "r395",
                    "r396",
                    "r397",
                    "r439",
                    "r440",
                    "r525",
                    "r526",
                    "r527",
                    "r528",
                    "r529",
                    "r531",
                    "r646",
                    "r647",
                    "r648"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Components of equity are the parts of the total Equity balance including that which is allocated to common, preferred, treasury stock, retained earnings, etc.",
                            "label":  "Equity Component [Domain]",
                            "terseLabel":  "Equity Component [Domain]"
                            }
                        }
                    },
                "localname":  "EquityComponentDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_EquityMethodInvestments":  {
                "auth_ref":  [
                    "r34",
                    "r177",
                    "r221"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSNonMarketableInvestmentsDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueAmount",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee.  This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.",
                            "label":  "Equity Method Investments",
                            "terseLabel":  "Accounted for using the equity method"
                            }
                        }
                    },
                "localname":  "EquityMethodInvestments",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSNonMarketableInvestmentsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_EquitySecuritiesFvNi":  {
                "auth_ref":  [
                    "r515"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSNonMarketableInvestmentsDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueAmount",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).",
                            "label":  "Equity Securities, FV-NI",
                            "terseLabel":  "Accounted for at cost, adjusted for observable price changes"
                            }
                        }
                    },
                "localname":  "EquitySecuritiesFvNi",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSNonMarketableInvestmentsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueAmount":  {
                "auth_ref":  [
                    "r219"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSNonMarketableInvestmentsDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of investment in equity security without readily determinable fair value.",
                            "label":  "Equity Securities without Readily Determinable Fair Value, Amount",
                            "totalLabel":  "Total non-marketable investments"
                            }
                        }
                    },
                "localname":  "EquitySecuritiesWithoutReadilyDeterminableFairValueAmount",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSNonMarketableInvestmentsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FacilityClosingMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Closing of a facility associated with exit from or disposal of business activities or restructurings pursuant to a plan.",
                            "label":  "Facility Closing [Member]",
                            "terseLabel":  "Vacated facilities"
                            }
                        }
                    },
                "localname":  "FacilityClosingMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURINGDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]",
                            "terseLabel":  "Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]"
                            }
                        }
                    },
                "localname":  "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable":  {
                "auth_ref":  [
                    "r509",
                    "r510",
                    "r511",
                    "r513"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of information about asset and liability measured at fair value on recurring and nonrecurring basis.",
                            "label":  "Fair Value, Recurring and Nonrecurring [Table]",
                            "terseLabel":  "Fair Value, Recurring and Nonrecurring [Table]"
                            }
                        }
                    },
                "localname":  "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_FairValueByFairValueHierarchyLevelAxis":  {
                "auth_ref":  [
                    "r339",
                    "r341",
                    "r342",
                    "r343",
                    "r344",
                    "r345",
                    "r346",
                    "r353",
                    "r510",
                    "r563",
                    "r564",
                    "r565"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by level within fair value hierarchy and fair value measured at net asset value per share as practical expedient.",
                            "label":  "Fair Value Hierarchy and NAV [Axis]",
                            "terseLabel":  "Fair Value Hierarchy and NAV [Axis]"
                            }
                        }
                    },
                "localname":  "FairValueByFairValueHierarchyLevelAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_FairValueDisclosuresAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Fair Value Disclosures [Abstract]",
                            "terseLabel":  "Fair Value Disclosures [Abstract]"
                            }
                        }
                    },
                "localname":  "FairValueDisclosuresAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_FairValueDisclosuresTextBlock":  {
                "auth_ref":  [
                    "r512"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities.  Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.",
                            "label":  "Fair Value Disclosures [Text Block]",
                            "terseLabel":  "FAIR VALUE OF FINANCIAL INSTRUMENTS"
                            }
                        }
                    },
                "localname":  "FairValueDisclosuresTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTS"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_FairValueInputsLevel1Member":  {
                "auth_ref":  [
                    "r339",
                    "r341",
                    "r346",
                    "r353",
                    "r510",
                    "r563"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Quoted prices in active markets for identical assets or liabilities that the reporting entity can access at the measurement date.",
                            "label":  "Fair Value, Inputs, Level 1 [Member]",
                            "terseLabel":  "Level 1"
                            }
                        }
                    },
                "localname":  "FairValueInputsLevel1Member",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_FairValueInputsLevel2Member":  {
                "auth_ref":  [
                    "r339",
                    "r341",
                    "r346",
                    "r353",
                    "r510",
                    "r564"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Inputs other than quoted prices included within level 1 that are observable for an asset or liability, either directly or indirectly, including, but not limited to, quoted prices for similar assets or liabilities in active markets, or quoted prices for identical or similar assets or liabilities in inactive markets.",
                            "label":  "Fair Value, Inputs, Level 2 [Member]",
                            "terseLabel":  "Level\u00a02"
                            }
                        }
                    },
                "localname":  "FairValueInputsLevel2Member",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_FairValueInputsLevel3Member":  {
                "auth_ref":  [
                    "r339",
                    "r341",
                    "r342",
                    "r343",
                    "r344",
                    "r345",
                    "r346",
                    "r353",
                    "r510",
                    "r565"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.",
                            "label":  "Fair Value, Inputs, Level 3 [Member]",
                            "terseLabel":  "Level\u00a03"
                            }
                        }
                    },
                "localname":  "FairValueInputsLevel3Member",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_FairValueMeasurementsFairValueHierarchyDomain":  {
                "auth_ref":  [
                    "r339",
                    "r341",
                    "r342",
                    "r343",
                    "r344",
                    "r345",
                    "r346",
                    "r353",
                    "r563",
                    "r564",
                    "r565"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Categories used to prioritize the inputs to valuation techniques to measure fair value.",
                            "label":  "Fair Value Hierarchy and NAV [Domain]",
                            "terseLabel":  "Fair Value Hierarchy and NAV [Domain]"
                            }
                        }
                    },
                "localname":  "FairValueMeasurementsFairValueHierarchyDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_FairValueNetAssetLiability":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Fair value of asset after deduction of liability.",
                            "label":  "Fair Value, Net Asset (Liability)",
                            "totalLabel":  "Net asset (liability)"
                            }
                        }
                    },
                "localname":  "FairValueNetAssetLiability",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FairValueOfFinancialInstrumentsPolicy":  {
                "auth_ref":  [
                    "r117",
                    "r514",
                    "r517"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for determining the fair value of financial instruments.",
                            "label":  "Fair Value of Financial Instruments, Policy [Policy Text Block]",
                            "terseLabel":  "Fair Value of Financial Instruments"
                            }
                        }
                    },
                "localname":  "FairValueOfFinancialInstrumentsPolicy",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_FinancialInstrumentAxis":  {
                "auth_ref":  [
                    "r212",
                    "r213",
                    "r228",
                    "r233",
                    "r234",
                    "r235",
                    "r236",
                    "r238",
                    "r239",
                    "r240",
                    "r241",
                    "r560",
                    "r561",
                    "r562",
                    "r563",
                    "r564",
                    "r565",
                    "r566",
                    "r567",
                    "r568",
                    "r569",
                    "r570",
                    "r571",
                    "r572",
                    "r573",
                    "r574",
                    "r575",
                    "r576",
                    "r577",
                    "r578",
                    "r579",
                    "r580",
                    "r581",
                    "r582",
                    "r583",
                    "r584",
                    "r585",
                    "r586",
                    "r587",
                    "r588",
                    "r589"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by type of financial instrument.",
                            "label":  "Financial Instrument [Axis]",
                            "terseLabel":  "Financial Instrument [Axis]"
                            }
                        }
                    },
                "localname":  "FinancialInstrumentAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetUsefulLife":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
                            "label":  "Finite-Lived Intangible Asset, Useful Life",
                            "terseLabel":  "Weighted Average Useful Life (in years)",
                            "verboseLabel":  "Useful life"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetUsefulLife",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESImpairmentIntangibleAssetsandGoodwillDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization":  {
                "auth_ref":  [
                    "r256"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_FiniteLivedIntangibleAssetsNet",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.",
                            "label":  "Finite-Lived Intangible Assets, Accumulated Amortization",
                            "negatedTerseLabel":  "Accumulated Amortization"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsAccumulatedAmortization",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLEstimatedRemainingIntangibleAssetAmortizationDetails":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_FiniteLivedIntangibleAssetsNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of amortization for asset, excluding financial asset and goodwill, lacking physical substance with finite life expected to be recognized after fifth fiscal year following current fiscal year.  Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
                            "label":  "Finite-Lived Intangible Asset, Expected Amortization, after Year Five",
                            "terseLabel":  "Thereafter"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLEstimatedRemainingIntangibleAssetAmortizationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths":  {
                "auth_ref":  [
                    "r258"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLEstimatedRemainingIntangibleAssetAmortizationDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_FiniteLivedIntangibleAssetsNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year.  Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
                            "label":  "Finite-Lived Intangible Asset, Expected Amortization, Year One",
                            "terseLabel":  "2021"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLEstimatedRemainingIntangibleAssetAmortizationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive":  {
                "auth_ref":  [
                    "r258"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLEstimatedRemainingIntangibleAssetAmortizationDetails":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_FiniteLivedIntangibleAssetsNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year.  Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
                            "label":  "Finite-Lived Intangible Asset, Expected Amortization, Year Five",
                            "terseLabel":  "2025"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsAmortizationExpenseYearFive",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLEstimatedRemainingIntangibleAssetAmortizationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour":  {
                "auth_ref":  [
                    "r258"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLEstimatedRemainingIntangibleAssetAmortizationDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_FiniteLivedIntangibleAssetsNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year.  Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
                            "label":  "Finite-Lived Intangible Asset, Expected Amortization, Year Four",
                            "terseLabel":  "2024"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsAmortizationExpenseYearFour",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLEstimatedRemainingIntangibleAssetAmortizationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree":  {
                "auth_ref":  [
                    "r258"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLEstimatedRemainingIntangibleAssetAmortizationDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_FiniteLivedIntangibleAssetsNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year.  Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
                            "label":  "Finite-Lived Intangible Asset, Expected Amortization, Year Three",
                            "terseLabel":  "2023"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsAmortizationExpenseYearThree",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLEstimatedRemainingIntangibleAssetAmortizationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo":  {
                "auth_ref":  [
                    "r258"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLEstimatedRemainingIntangibleAssetAmortizationDetails":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_FiniteLivedIntangibleAssetsNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year.  Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
                            "label":  "Finite-Lived Intangible Asset, Expected Amortization, Year Two",
                            "terseLabel":  "2022"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLEstimatedRemainingIntangibleAssetAmortizationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis":  {
                "auth_ref":  [
                    "r251",
                    "r253",
                    "r256",
                    "r259",
                    "r595",
                    "r596"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by major type or class of finite-lived intangible assets.",
                            "label":  "Finite-Lived Intangible Assets by Major Class [Axis]",
                            "terseLabel":  "Finite-Lived Intangible Assets by Major Class [Axis]"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsByMajorClassAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsGross":  {
                "auth_ref":  [
                    "r256",
                    "r596"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_FiniteLivedIntangibleAssetsNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.",
                            "label":  "Finite-Lived Intangible Assets, Gross",
                            "terseLabel":  "Gross Carrying Amount"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsGross",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Finite-Lived Intangible Assets [Line Items]",
                            "terseLabel":  "Finite-Lived Intangible Assets [Line Items]"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESImpairmentIntangibleAssetsandGoodwillDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain":  {
                "auth_ref":  [
                    "r251",
                    "r255"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The major class of finite-lived intangible asset (for example, patents, trademarks, copyrights, etc.) A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.",
                            "label":  "Finite-Lived Intangible Assets, Major Class Name [Domain]",
                            "terseLabel":  "Finite-Lived Intangible Assets, Major Class Name [Domain]"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsMajorClassNameDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsNet":  {
                "auth_ref":  [
                    "r256",
                    "r595"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLEstimatedRemainingIntangibleAssetAmortizationDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        },
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.",
                            "label":  "Finite-Lived Intangible Assets, Net",
                            "totalLabel":  "Net Carrying Amount"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsNet",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLEstimatedRemainingIntangibleAssetAmortizationDetails",
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ForeignCurrencyFairValueHedgeDerivativeLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Foreign Currency Fair Value Hedge Derivative [Line Items]",
                            "terseLabel":  "Foreign Currency Fair Value Hedge Derivative [Line Items]"
                            }
                        }
                    },
                "localname":  "ForeignCurrencyFairValueHedgeDerivativeLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESForeignCurrencyTransactionsandTranslationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ForeignCurrencyFairValueHedgeDerivativeTable":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of information about derivative instruments designated as foreign currency fair value hedging instruments.",
                            "label":  "Foreign Currency Fair Value Hedge Derivative [Table]",
                            "terseLabel":  "Foreign Currency Fair Value Hedge Derivative [Table]"
                            }
                        }
                    },
                "localname":  "ForeignCurrencyFairValueHedgeDerivativeTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESForeignCurrencyTransactionsandTranslationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ForeignCurrencyTransactionGainLossBeforeTax":  {
                "auth_ref":  [
                    "r520",
                    "r521",
                    "r522",
                    "r523"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.",
                            "label":  "Foreign Currency Transaction Gain (Loss), before Tax",
                            "terseLabel":  "Foreign currency transactions and translation"
                            }
                        }
                    },
                "localname":  "ForeignCurrencyTransactionGainLossBeforeTax",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESForeignCurrencyTransactionsandTranslationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ForeignCurrencyTransactionGainLossUnrealized":  {
                "auth_ref":  [
                    "r109",
                    "r522",
                    "r523"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  15.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount before tax of foreign currency transaction unrealized gain (loss) recognized in the income statement.",
                            "label":  "Foreign Currency Transaction Gain (Loss), Unrealized",
                            "negatedLabel":  "Net foreign currency and other gain"
                            }
                        }
                    },
                "localname":  "ForeignCurrencyTransactionGainLossUnrealized",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock":  {
                "auth_ref":  [
                    "r117",
                    "r533"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for (1) transactions denominated in a currency other than the reporting enterprise's functional currency, (2) translating foreign currency financial statements that are incorporated into the financial statements of the reporting enterprise by consolidation, combination, or the equity method of accounting, and (3) remeasurement of the financial statements of a foreign reporting enterprise in a hyperinflationary economy.",
                            "label":  "Foreign Currency Transactions and Translations Policy [Policy Text Block]",
                            "terseLabel":  "Foreign Currency Transactions and Translation"
                            }
                        }
                    },
                "localname":  "ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_FurnitureAndFixturesMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities.  Examples include, but are not limited to, desks, chairs, tables, and bookcases.",
                            "label":  "Furniture and Fixtures [Member]",
                            "terseLabel":  "Furniture and fixtures"
                            }
                        }
                    },
                "localname":  "FurnitureAndFixturesMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_GeneralAndAdministrativeExpense":  {
                "auth_ref":  [
                    "r84"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_OperatingExpenses",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.",
                            "label":  "General and Administrative Expense",
                            "terseLabel":  "General and administrative"
                            }
                        }
                    },
                "localname":  "GeneralAndAdministrativeExpense",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_GeneralAndAdministrativeExpenseMember":  {
                "auth_ref":  [
                    "r77"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Primary financial statement caption encompassing general and administrative expense.",
                            "label":  "General and Administrative Expense [Member]",
                            "terseLabel":  "General and administrative"
                            }
                        }
                    },
                "localname":  "GeneralAndAdministrativeExpenseMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_Goodwill":  {
                "auth_ref":  [
                    "r242",
                    "r243",
                    "r600"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
                        "weight":  1.0
                        },
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  3.0,
                        "parentTag":  "csod_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTotalAssetsAndGoodwill",
                        "weight":  1.0
                        },
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_Assets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.",
                            "label":  "Goodwill",
                            "periodEndLabel":  "Ending balance",
                            "periodStartLabel":  "Beginning balance",
                            "terseLabel":  "Goodwill"
                            }
                        }
                    },
                "localname":  "Goodwill",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails",
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS",
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGoodwillDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_GoodwillAcquiredDuringPeriod":  {
                "auth_ref":  [
                    "r244"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.",
                            "label":  "Goodwill, Acquired During Period",
                            "terseLabel":  "Goodwill resulting from acquisitions"
                            }
                        }
                    },
                "localname":  "GoodwillAcquiredDuringPeriod",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGoodwillDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Goodwill and Intangible Assets Disclosure [Abstract]",
                            "terseLabel":  "Goodwill and Intangible Assets Disclosure [Abstract]"
                            }
                        }
                    },
                "localname":  "GoodwillAndIntangibleAssetsDisclosureAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock":  {
                "auth_ref":  [
                    "r263"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for goodwill and intangible assets.",
                            "label":  "Goodwill and Intangible Assets Disclosure [Text Block]",
                            "terseLabel":  "INTANGIBLE ASSETS AND GOODWILL"
                            }
                        }
                    },
                "localname":  "GoodwillAndIntangibleAssetsDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILL"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy":  {
                "auth_ref":  [
                    "r117",
                    "r247"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for goodwill.  This accounting policy also may address how an entity assesses and measures impairment of goodwill, how reporting units are determined, how goodwill is allocated to such units, and how the fair values of the reporting units are determined.",
                            "label":  "Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]",
                            "terseLabel":  "Goodwill"
                            }
                        }
                    },
                "localname":  "GoodwillAndIntangibleAssetsGoodwillPolicy",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_GoodwillForeignCurrencyTranslationGainLoss":  {
                "auth_ref":  [
                    "r245"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.",
                            "label":  "Goodwill, Foreign Currency Translation Gain (Loss)",
                            "terseLabel":  "Effect of foreign currency translation"
                            }
                        }
                    },
                "localname":  "GoodwillForeignCurrencyTranslationGainLoss",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGoodwillDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_GoodwillPurchaseAccountingAdjustments":  {
                "auth_ref":  [
                    "r246",
                    "r454"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialAssets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.",
                            "label":  "Goodwill, Purchase Accounting Adjustments",
                            "negatedTerseLabel":  "Goodwill, Measurement Period Adjustments",
                            "terseLabel":  "Measurement period adjustments"
                            }
                        }
                    },
                "localname":  "GoodwillPurchaseAccountingAdjustments",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails",
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGoodwillDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_GoodwillRollForward":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
                            "label":  "Goodwill [Roll Forward]",
                            "terseLabel":  "Goodwill [Roll Forward]"
                            }
                        }
                    },
                "localname":  "GoodwillRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGoodwillDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_GrossProfit":  {
                "auth_ref":  [
                    "r81",
                    "r121",
                    "r176",
                    "r181",
                    "r185",
                    "r188",
                    "r191",
                    "r223",
                    "r519"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_OperatingIncomeLoss",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.",
                            "label":  "Gross Profit",
                            "totalLabel":  "Gross profit"
                            }
                        }
                    },
                "localname":  "GrossProfit",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_HedgingDesignationAxis":  {
                "auth_ref":  [
                    "r489",
                    "r502"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by designation of purpose of derivative instrument.",
                            "label":  "Hedging Designation [Axis]",
                            "terseLabel":  "Hedging Designation [Axis]"
                            }
                        }
                    },
                "localname":  "HedgingDesignationAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSDerivativeLiabilitiesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_HedgingDesignationDomain":  {
                "auth_ref":  [
                    "r489"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Designation of purpose of derivative instrument.",
                            "label":  "Hedging Designation [Domain]",
                            "terseLabel":  "Hedging Designation"
                            }
                        }
                    },
                "localname":  "HedgingDesignationDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSDerivativeLiabilitiesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill":  {
                "auth_ref":  [
                    "r108",
                    "r260"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.",
                            "label":  "Impairment of Intangible Assets (Excluding Goodwill)",
                            "terseLabel":  "Impairment charges"
                            }
                        }
                    },
                "localname":  "ImpairmentOfIntangibleAssetsExcludingGoodwill",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLAdditionalInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ImpairmentOrDisposalOfLongLivedAssetsIncludingIntangibleAssetsPolicyPolicyTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for the impairment and disposal of long-lived assets including goodwill and other intangible assets.",
                            "label":  "Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block]",
                            "terseLabel":  "Impairment of Long-lived Assets"
                            }
                        }
                    },
                "localname":  "ImpairmentOrDisposalOfLongLivedAssetsIncludingIntangibleAssetsPolicyPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic":  {
                "auth_ref":  [
                    "r124",
                    "r446"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeBeforeTaxesDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.",
                            "label":  "Income (Loss) from Continuing Operations before Income Taxes, Domestic",
                            "terseLabel":  "United States"
                            }
                        }
                    },
                "localname":  "IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeBeforeTaxesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign":  {
                "auth_ref":  [
                    "r124",
                    "r446"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeBeforeTaxesDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.",
                            "label":  "Income (Loss) from Continuing Operations before Income Taxes, Foreign",
                            "terseLabel":  "Foreign"
                            }
                        }
                    },
                "localname":  "IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeBeforeTaxesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments":  {
                "auth_ref":  [
                    "r124",
                    "r176",
                    "r181",
                    "r185",
                    "r188",
                    "r191"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_NetIncomeLoss",
                        "weight":  1.0
                        },
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeBeforeTaxesDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.",
                            "label":  "Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest",
                            "totalLabel":  "Loss before income tax benefit (provision)"
                            }
                        }
                    },
                "localname":  "IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS",
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeBeforeTaxesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeStatementAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Income Statement [Abstract]",
                            "terseLabel":  "Income Statement [Abstract]"
                            }
                        }
                    },
                "localname":  "IncomeStatementAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_IncomeStatementLocationAxis":  {
                "auth_ref":  [
                    "r268"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by location in the income statement.",
                            "label":  "Income Statement Location [Axis]",
                            "terseLabel":  "Income Statement Location [Axis]"
                            }
                        }
                    },
                "localname":  "IncomeStatementLocationAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSIncomeforDerivativeInstrumentsDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESForeignCurrencyTransactionsandTranslationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_IncomeStatementLocationDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Location in the income statement.",
                            "label":  "Income Statement Location [Domain]",
                            "terseLabel":  "Income Statement Location [Domain]"
                            }
                        }
                    },
                "localname":  "IncomeStatementLocationDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSIncomeforDerivativeInstrumentsDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESForeignCurrencyTransactionsandTranslationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_IncomeTaxAuthorityAxis":  {
                "auth_ref":  [
                    "r417"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by tax jurisdiction.",
                            "label":  "Income Tax Authority [Axis]",
                            "terseLabel":  "Income Tax Authority [Axis]"
                            }
                        }
                    },
                "localname":  "IncomeTaxAuthorityAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESAdditionalInformationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_IncomeTaxAuthorityDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Agency, division or body classification that levies income taxes, examines tax returns for compliance, or grants exemptions from or makes other decisions pertaining to income taxes.",
                            "label":  "Income Tax Authority [Domain]",
                            "terseLabel":  "Income Tax Authority [Domain]"
                            }
                        }
                    },
                "localname":  "IncomeTaxAuthorityDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESAdditionalInformationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_IncomeTaxDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Income Tax Disclosure [Abstract]",
                            "terseLabel":  "Income Tax Disclosure [Abstract]"
                            }
                        }
                    },
                "localname":  "IncomeTaxDisclosureAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_IncomeTaxDisclosureTextBlock":  {
                "auth_ref":  [
                    "r416",
                    "r422",
                    "r429",
                    "r441",
                    "r447",
                    "r449",
                    "r450",
                    "r452"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for income taxes.  Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.",
                            "label":  "Income Tax Disclosure [Text Block]",
                            "terseLabel":  "INCOME TAXES"
                            }
                        }
                    },
                "localname":  "IncomeTaxDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXES"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_IncomeTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r122",
                    "r140",
                    "r141",
                    "r175",
                    "r414",
                    "r442",
                    "r448",
                    "r640"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_NetIncomeLoss",
                        "weight":  -1.0
                        },
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        },
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.",
                            "label":  "Income Tax Expense (Benefit)",
                            "negatedLabel":  "Income tax benefit (provision)",
                            "totalLabel":  "Total income tax (benefit) provision"
                            }
                        }
                    },
                "localname":  "IncomeTaxExpenseBenefit",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS",
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails",
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Effective Income Tax Rate Reconciliation, Amount [Abstract]",
                            "terseLabel":  "Effective Income Tax Rate Reconciliation"
                            }
                        }
                    },
                "localname":  "IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_IncomeTaxPolicyTextBlock":  {
                "auth_ref":  [
                    "r71",
                    "r117",
                    "r410",
                    "r411",
                    "r422",
                    "r423",
                    "r428",
                    "r436",
                    "r661"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.",
                            "label":  "Income Tax, Policy [Policy Text Block]",
                            "terseLabel":  "Income Taxes"
                            }
                        }
                    },
                "localname":  "IncomeTaxPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance":  {
                "auth_ref":  [
                    "r415"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_IncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.",
                            "label":  "Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount",
                            "terseLabel":  "Valuation allowance"
                            }
                        }
                    },
                "localname":  "IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate":  {
                "auth_ref":  [
                    "r409",
                    "r415"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_IncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.",
                            "label":  "Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount",
                            "terseLabel":  "Rate change"
                            }
                        }
                    },
                "localname":  "IncomeTaxReconciliationChangeInEnactedTaxRate",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential":  {
                "auth_ref":  [
                    "r415"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_IncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit).",
                            "label":  "Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount",
                            "terseLabel":  "Foreign rate differential"
                            }
                        }
                    },
                "localname":  "IncomeTaxReconciliationForeignIncomeTaxRateDifferential",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate":  {
                "auth_ref":  [
                    "r415"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails":  {
                        "order":  8.0,
                        "parentTag":  "us-gaap_IncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.",
                            "label":  "Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount",
                            "terseLabel":  "US Federal tax benefit at statutory rates"
                            }
                        }
                    },
                "localname":  "IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost":  {
                "auth_ref":  [
                    "r415"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_IncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for award under share-based payment arrangement.  Includes, but is not limited to, expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.",
                            "label":  "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount",
                            "terseLabel":  "Stock based compensation"
                            }
                        }
                    },
                "localname":  "IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeTaxReconciliationOtherAdjustments":  {
                "auth_ref":  [
                    "r415"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_IncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.",
                            "label":  "Effective Income Tax Rate Reconciliation, Other Adjustments, Amount",
                            "terseLabel":  "Other"
                            }
                        }
                    },
                "localname":  "IncomeTaxReconciliationOtherAdjustments",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes":  {
                "auth_ref":  [
                    "r415"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_IncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit).",
                            "label":  "Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount",
                            "terseLabel":  "State income taxes, net of federal tax benefit"
                            }
                        }
                    },
                "localname":  "IncomeTaxReconciliationStateAndLocalIncomeTaxes",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESComponentsofEffectiveIncomeTaxReconciliationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeTaxesPaid":  {
                "auth_ref":  [
                    "r105",
                    "r112"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.",
                            "label":  "Income Taxes Paid",
                            "terseLabel":  "Cash paid for income taxes"
                            }
                        }
                    },
                "localname":  "IncomeTaxesPaid",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInAccountsPayable":  {
                "auth_ref":  [
                    "r107"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.",
                            "label":  "Increase (Decrease) in Accounts Payable",
                            "terseLabel":  "Accounts payable"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInAccountsPayable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInAccountsReceivable":  {
                "auth_ref":  [
                    "r107"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  13.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.",
                            "label":  "Increase (Decrease) in Accounts Receivable",
                            "negatedLabel":  "Accounts receivable"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInAccountsReceivable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInAccruedLiabilities":  {
                "auth_ref":  [
                    "r107"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.",
                            "label":  "Increase (Decrease) in Accrued Liabilities",
                            "terseLabel":  "Accrued expenses"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInAccruedLiabilities",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInContractWithCustomerLiability":  {
                "auth_ref":  [
                    "r107"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  9.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration has been received or is receivable.",
                            "label":  "Increase (Decrease) in Contract with Customer, Liability",
                            "terseLabel":  "Deferred revenue"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInContractWithCustomerLiability",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInDeferredCharges":  {
                "auth_ref":  [
                    "r107"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  10.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The increase (decrease) during the reporting period in the value of expenditures made during the current reporting period for benefits that will be received over a period of years.  Deferred charges differ from prepaid expenses in that they usually extend over a long period of time and may or may not be regularly recurring costs of operation.",
                            "label":  "Increase (Decrease) in Deferred Charges",
                            "negatedLabel":  "Deferred commissions"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInDeferredCharges",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInDeferredIncomeTaxes":  {
                "auth_ref":  [
                    "r107"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The increase (decrease) during the reporting period in the account that represents the temporary difference that results from Income or Loss that is recognized for accounting purposes but not for tax purposes and vice versa.",
                            "label":  "Increase (Decrease) in Deferred Income Taxes",
                            "negatedTerseLabel":  "Deferred income taxes"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInDeferredIncomeTaxes",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInOperatingCapitalAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Increase (Decrease) in Operating Capital [Abstract]",
                            "terseLabel":  "Changes in operating assets and liabilities, net of acquisitions:"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInOperatingCapitalAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_IncreaseDecreaseInOtherOperatingLiabilities":  {
                "auth_ref":  [
                    "r107"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  8.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of increase (decrease) in operating liabilities classified as other.",
                            "label":  "Increase (Decrease) in Other Operating Liabilities",
                            "terseLabel":  "Other liabilities"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInOtherOperatingLiabilities",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets":  {
                "auth_ref":  [
                    "r107"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  7.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of increase (decrease) in prepaid expenses, and assets classified as other.",
                            "label":  "Increase (Decrease) in Prepaid Expense and Other Assets",
                            "negatedLabel":  "Prepaid expenses and other assets"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInStockholdersEquityRollForward":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
                            "label":  "Increase (Decrease) in Stockholders' Equity [Roll Forward]",
                            "terseLabel":  "Increase (Decrease) in Stockholders' Equity [Roll Forward]"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInStockholdersEquityRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_IntangibleAssetsFiniteLivedPolicy":  {
                "auth_ref":  [
                    "r117",
                    "r255",
                    "r591",
                    "r592",
                    "r593",
                    "r595"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for finite-lived intangible assets.  This accounting policy also might address: (1) the amortization method used; (2) the useful lives of such assets; and (3) how the entity assesses and measures impairment of such assets.",
                            "label":  "Intangible Assets, Finite-Lived, Policy [Policy Text Block]",
                            "terseLabel":  "Intangible Assets"
                            }
                        }
                    },
                "localname":  "IntangibleAssetsFiniteLivedPolicy",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_IntangibleAssetsNetExcludingGoodwill":  {
                "auth_ref":  [
                    "r249",
                    "r254"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_Assets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.",
                            "label":  "Intangible Assets, Net (Excluding Goodwill)",
                            "terseLabel":  "Intangible assets, net"
                            }
                        }
                    },
                "localname":  "IntangibleAssetsNetExcludingGoodwill",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InterestExpense":  {
                "auth_ref":  [
                    "r73",
                    "r173",
                    "r534",
                    "r537",
                    "r615"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_NonoperatingIncomeExpense",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of the cost of borrowed funds accounted for as interest expense.",
                            "label":  "Interest Expense",
                            "negatedLabel":  "Interest expense"
                            }
                        }
                    },
                "localname":  "InterestExpense",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InterestExpenseDebt":  {
                "auth_ref":  [
                    "r86",
                    "r303"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/DEBTScheduleofInterestExpenseRecognizedDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of the cost of borrowed funds accounted for as interest expense for debt.",
                            "label":  "Interest Expense, Debt",
                            "totalLabel":  "Total"
                            }
                        }
                    },
                "localname":  "InterestExpenseDebt",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTScheduleofInterestExpenseRecognizedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InterestExpenseDebtExcludingAmortization":  {
                "auth_ref":  [
                    "r88"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/DEBTScheduleofInterestExpenseRecognizedDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_InterestExpenseDebt",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs.",
                            "label":  "Interest Expense, Debt, Excluding Amortization",
                            "terseLabel":  "Contractual interest expense"
                            }
                        }
                    },
                "localname":  "InterestExpenseDebtExcludingAmortization",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTScheduleofInterestExpenseRecognizedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InterestExpenseMember":  {
                "auth_ref":  [
                    "r500"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Primary financial statement caption encompassing interest expense.",
                            "label":  "Interest Expense [Member]",
                            "terseLabel":  "Interest expense"
                            }
                        }
                    },
                "localname":  "InterestExpenseMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSIncomeforDerivativeInstrumentsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_InterestPaidNet":  {
                "auth_ref":  [
                    "r101",
                    "r104",
                    "r112"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cash paid for interest, excluding capitalized interest, classified as operating activity.  Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.",
                            "label":  "Interest Paid, Excluding Capitalized Interest, Operating Activities",
                            "terseLabel":  "Cash paid for interest"
                            }
                        }
                    },
                "localname":  "InterestPaidNet",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InterestPayableCurrent":  {
                "auth_ref":  [
                    "r8",
                    "r9",
                    "r43"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSAccruedExpensesDetails":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_AccruedLiabilitiesCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid.  Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
                            "label":  "Interest Payable, Current",
                            "terseLabel":  "Accrued interest"
                            }
                        }
                    },
                "localname":  "InterestPayableCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSAccruedExpensesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet":  {
                "auth_ref":  [
                    "r508"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.",
                            "label":  "Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net",
                            "terseLabel":  "Component of AOCI expected to be realized in statements of operations over the next twelve months"
                            }
                        }
                    },
                "localname":  "InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InterestRateSwapMember":  {
                "auth_ref":  [
                    "r499"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Forward based contracts in which two parties agree to swap periodic payments that are fixed at the outset of the swap contract with variable payments based on a market interest rate (index rate) over a specified period.",
                            "label":  "Interest Rate Swap [Member]",
                            "terseLabel":  "Interest rate swap contracts"
                            }
                        }
                    },
                "localname":  "InterestRateSwapMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSDerivativeLiabilitiesDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSIncomeforDerivativeInstrumentsDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_InternalUseSoftwarePolicy":  {
                "auth_ref":  [
                    "r117",
                    "r261",
                    "r262"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for costs incurred when both (1) the software is acquired, internally developed, or modified solely to meet the entity's internal needs, and (2) during the software's development or modification, no substantive plan exists or is being developed to market the software externally.",
                            "label":  "Internal Use Software, Policy [Policy Text Block]",
                            "terseLabel":  "Capitalized Software Costs"
                            }
                        }
                    },
                "localname":  "InternalUseSoftwarePolicy",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_InvestmentPolicyTextBlock":  {
                "auth_ref":  [
                    "r222",
                    "r639"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for investment in financial asset.",
                            "label":  "Investment, Policy [Policy Text Block]",
                            "terseLabel":  "Strategic Investments"
                            }
                        }
                    },
                "localname":  "InvestmentPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_InvestmentTableTextBlock":  {
                "auth_ref":  [
                    "r218",
                    "r220",
                    "r224",
                    "r225"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of investment.",
                            "label":  "Investment [Table Text Block]",
                            "terseLabel":  "Schedule of Long-Term Investments"
                            }
                        }
                    },
                "localname":  "InvestmentTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Investments, Debt and Equity Securities [Abstract]",
                            "terseLabel":  "Investments, Debt and Equity Securities [Abstract]"
                            }
                        }
                    },
                "localname":  "InvestmentsDebtAndEquitySecuritiesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock":  {
                "auth_ref":  [
                    "r218",
                    "r597",
                    "r620",
                    "r658"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for  investments in certain debt and equity securities.",
                            "label":  "Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]",
                            "terseLabel":  "CASH AND INVESTMENTS"
                            }
                        }
                    },
                "localname":  "InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTS"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_LeaseCost":  {
                "auth_ref":  [
                    "r550",
                    "r552"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/LEASESComponentsofLeaseExpenseDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of lease cost recognized by lessee for lease contract.",
                            "label":  "Lease, Cost",
                            "totalLabel":  "Net lease cost"
                            }
                        }
                    },
                "localname":  "LeaseCost",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESComponentsofLeaseExpenseDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LeaseCostTableTextBlock":  {
                "auth_ref":  [
                    "r550"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of lessee's lease cost.  Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.",
                            "label":  "Lease, Cost [Table Text Block]",
                            "terseLabel":  "Components of Lease Expense"
                            }
                        }
                    },
                "localname":  "LeaseCostTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_LeaseholdImprovementsMember":  {
                "auth_ref":  [
                    "r265"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Additions or improvements to assets held under a lease arrangement.",
                            "label":  "Leasehold Improvements [Member]",
                            "terseLabel":  "Leasehold improvements"
                            }
                        }
                    },
                "localname":  "LeaseholdImprovementsMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_LeasesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Leases [Abstract]",
                            "terseLabel":  "Leases [Abstract]"
                            }
                        }
                    },
                "localname":  "LeasesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_LesseeLeaseDescriptionLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Lessee, Lease, Description [Line Items]",
                            "terseLabel":  "Lessee, Lease, Description [Line Items]"
                            }
                        }
                    },
                "localname":  "LesseeLeaseDescriptionLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESNarrativeDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_LesseeLeaseDescriptionTable":  {
                "auth_ref":  [
                    "r543"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of information about lessee's leases.",
                            "label":  "Lessee, Lease, Description [Table]",
                            "terseLabel":  "Lessee, Lease, Description [Table]"
                            }
                        }
                    },
                "localname":  "LesseeLeaseDescriptionTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESNarrativeDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_LesseeLeasesPolicyTextBlock":  {
                "auth_ref":  [
                    "r542"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for leasing arrangement entered into by lessee.",
                            "label":  "Lessee, Leases [Policy Text Block]",
                            "terseLabel":  "Leases"
                            }
                        }
                    },
                "localname":  "LesseeLeasesPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock":  {
                "auth_ref":  [
                    "r551"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of undiscounted cash flows of lessee's operating lease liability.  Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.",
                            "label":  "Lessee, Operating Lease, Liability, Maturity [Table Text Block]",
                            "terseLabel":  "Maturities of Operating Lease Liabilities"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityMaturityTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue":  {
                "auth_ref":  [
                    "r551"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        },
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails_1":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of lessee's undiscounted obligation for lease payment for operating lease.",
                            "label":  "Lessee, Operating Lease, Liability, to be Paid",
                            "totalLabel":  "Total lease payments"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityPaymentsDue",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive":  {
                "auth_ref":  [
                    "r551"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year.  Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
                            "label":  "Lessee, Operating Lease, Liability, to be Paid, after Year Five",
                            "terseLabel":  "Thereafter"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths":  {
                "auth_ref":  [
                    "r551"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year.  Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
                            "label":  "Lessee, Operating Lease, Liability, to be Paid, Year One",
                            "terseLabel":  "2021"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive":  {
                "auth_ref":  [
                    "r551"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year.  Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
                            "label":  "Lessee, Operating Lease, Liability, to be Paid, Year Five",
                            "terseLabel":  "2025"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityPaymentsDueYearFive",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour":  {
                "auth_ref":  [
                    "r551"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year.  Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
                            "label":  "Lessee, Operating Lease, Liability, to be Paid, Year Four",
                            "terseLabel":  "2024"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityPaymentsDueYearFour",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree":  {
                "auth_ref":  [
                    "r551"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year.  Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
                            "label":  "Lessee, Operating Lease, Liability, to be Paid, Year Three",
                            "terseLabel":  "2023"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityPaymentsDueYearThree",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo":  {
                "auth_ref":  [
                    "r551"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year.  Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
                            "label":  "Lessee, Operating Lease, Liability, to be Paid, Year Two",
                            "terseLabel":  "2022"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityPaymentsDueYearTwo",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount":  {
                "auth_ref":  [
                    "r551"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails_1":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.",
                            "label":  "Lessee, Operating Lease, Liability, Undiscounted Excess Amount",
                            "negatedLabel":  "Less:  Imputed interest"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityUndiscountedExcessAmount",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeasesTextBlock":  {
                "auth_ref":  [
                    "r553"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for operating leases of lessee.  Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability.",
                            "label":  "Lessee, Operating Leases [Text Block]",
                            "terseLabel":  "Leases"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeasesTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASES"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_LetterOfCreditMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "A document typically issued by a financial institution which acts as a guarantee of payment to a beneficiary, or as the source of payment for a specific transaction (for example, wiring funds to a foreign exporter if and when specified merchandise is accepted pursuant to the terms of the letter of credit).",
                            "label":  "Letter of Credit [Member]",
                            "terseLabel":  "Letter of Credit"
                            }
                        }
                    },
                "localname":  "LetterOfCreditMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COMMITMENTSANDCONTINGENCIESDetails",
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_Liabilities":  {
                "auth_ref":  [
                    "r42",
                    "r121",
                    "r183",
                    "r223",
                    "r479",
                    "r483",
                    "r484",
                    "r519"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_LiabilitiesAndStockholdersEquity",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized.  Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.",
                            "label":  "Liabilities",
                            "totalLabel":  "Total liabilities"
                            }
                        }
                    },
                "localname":  "Liabilities",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LiabilitiesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Liabilities [Abstract]",
                            "terseLabel":  "Current liabilities:"
                            }
                        }
                    },
                "localname":  "LiabilitiesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_LiabilitiesAndStockholdersEquity":  {
                "auth_ref":  [
                    "r29",
                    "r121",
                    "r223",
                    "r519",
                    "r607",
                    "r633"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.",
                            "label":  "Liabilities and Equity",
                            "totalLabel":  "Total liabilities and stockholders\u2019 equity"
                            }
                        }
                    },
                "localname":  "LiabilitiesAndStockholdersEquity",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LiabilitiesAndStockholdersEquityAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Liabilities and Equity [Abstract]",
                            "terseLabel":  "Liabilities and stockholders\u2019 equity"
                            }
                        }
                    },
                "localname":  "LiabilitiesAndStockholdersEquityAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_LiabilitiesCurrent":  {
                "auth_ref":  [
                    "r44",
                    "r121",
                    "r223",
                    "r479",
                    "r483",
                    "r484",
                    "r519"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_Liabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.",
                            "label":  "Liabilities, Current",
                            "totalLabel":  "Total current liabilities"
                            }
                        }
                    },
                "localname":  "LiabilitiesCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LineOfCreditFacilityFairValueOfAmountOutstanding":  {
                "auth_ref":  [
                    "r518"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Fair value of the amount outstanding under the credit facility.",
                            "label":  "Line of Credit Facility, Fair Value of Amount Outstanding",
                            "terseLabel":  "Outstanding letters of credit"
                            }
                        }
                    },
                "localname":  "LineOfCreditFacilityFairValueOfAmountOutstanding",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COMMITMENTSANDCONTINGENCIESDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity":  {
                "auth_ref":  [
                    "r40"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.",
                            "label":  "Line of Credit Facility, Maximum Borrowing Capacity",
                            "terseLabel":  "Maximum borrowing capacity"
                            }
                        }
                    },
                "localname":  "LineOfCreditFacilityMaximumBorrowingCapacity",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.",
                            "label":  "Line of Credit Facility, Unused Capacity, Commitment Fee Percentage",
                            "terseLabel":  "Commitment fee on undrawn amounts (in percent)"
                            }
                        }
                    },
                "localname":  "LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_LineOfCreditMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars.",
                            "label":  "Line of Credit [Member]",
                            "terseLabel":  "Line of Credit"
                            }
                        }
                    },
                "localname":  "LineOfCreditMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/DEBTScheduleofInterestExpenseRecognizedDetails",
                    "http://www.cornerstoneondemand.com/role/DEBTSummaryofNetCarryingAmountofDebtDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_LondonInterbankOfferedRateLIBORMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Interest rate at which a bank borrows funds from other banks in the London interbank market.",
                            "label":  "London Interbank Offered Rate (LIBOR) [Member]",
                            "terseLabel":  "London Interbank Offered Rate (LIBOR)"
                            }
                        }
                    },
                "localname":  "LondonInterbankOfferedRateLIBORMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_LongTermDebtCurrent":  {
                "auth_ref":  [
                    "r41"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_LiabilitiesCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current.  Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper.  Excludes capital lease obligations.",
                            "label":  "Long-term Debt, Current Maturities",
                            "terseLabel":  "Long-term Debt, Current Maturities"
                            }
                        }
                    },
                "localname":  "LongTermDebtCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LongTermInvestments":  {
                "auth_ref":  [
                    "r34"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_Assets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).",
                            "label":  "Long-term Investments",
                            "terseLabel":  "Long-term investments"
                            }
                        }
                    },
                "localname":  "LongTermInvestments",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LongtermDebtTypeAxis":  {
                "auth_ref":  [
                    "r47"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by type of long-term debt.",
                            "label":  "Long-term Debt, Type [Axis]",
                            "terseLabel":  "Long-term Debt, Type [Axis]"
                            }
                        }
                    },
                "localname":  "LongtermDebtTypeAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/DEBTScheduleofInterestExpenseRecognizedDetails",
                    "http://www.cornerstoneondemand.com/role/DEBTSummaryofNetCarryingAmountofDebtDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESConvertibleNotesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_LongtermDebtTypeDomain":  {
                "auth_ref":  [
                    "r47",
                    "r298"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Type of long-term debt arrangement, such as notes, line of credit, commercial paper, asset-based financing, project financing, letter of credit financing.  These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.",
                            "label":  "Long-term Debt, Type [Domain]",
                            "terseLabel":  "Long-term Debt, Type [Domain]"
                            }
                        }
                    },
                "localname":  "LongtermDebtTypeDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/DEBTScheduleofInterestExpenseRecognizedDetails",
                    "http://www.cornerstoneondemand.com/role/DEBTSummaryofNetCarryingAmountofDebtDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESConvertibleNotesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_LossContingenciesLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Loss Contingencies [Line Items]",
                            "terseLabel":  "Loss Contingencies [Line Items]"
                            }
                        }
                    },
                "localname":  "LossContingenciesLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COMMITMENTSANDCONTINGENCIESDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_LossContingenciesTable":  {
                "auth_ref":  [
                    "r286",
                    "r287",
                    "r288",
                    "r289",
                    "r290",
                    "r291",
                    "r292",
                    "r294",
                    "r295"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Discloses the specific components (such as the nature, name, and date) of the loss contingency and gives an estimate of the possible loss or range of loss, or states that a reasonable estimate cannot be made.  Excludes environmental contingencies, warranties and unconditional purchase obligations.",
                            "label":  "Loss Contingencies [Table]",
                            "terseLabel":  "Loss Contingencies [Table]"
                            }
                        }
                    },
                "localname":  "LossContingenciesTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COMMITMENTSANDCONTINGENCIESDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_MarketableSecuritiesPolicy":  {
                "auth_ref":  [
                    "r619"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for investment classified as marketable security.",
                            "label":  "Marketable Securities, Policy [Policy Text Block]",
                            "terseLabel":  "Investments in Marketable Securities"
                            }
                        }
                    },
                "localname":  "MarketableSecuritiesPolicy",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_MoneyMarketFundsAtCarryingValue":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates.  Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition.  Original maturity means an original maturity to the entity holding the investment.  For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents.  However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.",
                            "label":  "Money Market Funds, at Carrying Value",
                            "terseLabel":  "Money market funds, at carrying value"
                            }
                        }
                    },
                "localname":  "MoneyMarketFundsAtCarryingValue",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSAdditionalInformationDetail"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_MoneyMarketFundsMember":  {
                "auth_ref":  [
                    "r339"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Fund that invests in short-term money-market instruments, for example, but not limited to, commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and other highly liquid securities.",
                            "label":  "Money Market Funds [Member]",
                            "terseLabel":  "Money market funds"
                            }
                        }
                    },
                "localname":  "MoneyMarketFundsMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_NatureOfOperations":  {
                "auth_ref":  [
                    "r157",
                    "r166"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings.  For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward.",
                            "label":  "Nature of Operations [Text Block]",
                            "terseLabel":  "ORGANIZATION"
                            }
                        }
                    },
                "localname":  "NatureOfOperations",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/ORGANIZATION"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_NetCashProvidedByUsedInFinancingActivities":  {
                "auth_ref":  [
                    "r103"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cash inflow (outflow) from financing activities, including discontinued operations.  Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.",
                            "label":  "Net Cash Provided by (Used in) Financing Activities",
                            "totalLabel":  "Net cash provided by (used in) financing activities"
                            }
                        }
                    },
                "localname":  "NetCashProvidedByUsedInFinancingActivities",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Net Cash Provided by (Used in) Financing Activities [Abstract]",
                            "terseLabel":  "Cash flows from financing activities"
                            }
                        }
                    },
                "localname":  "NetCashProvidedByUsedInFinancingActivitiesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_NetCashProvidedByUsedInInvestingActivities":  {
                "auth_ref":  [
                    "r103"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cash inflow (outflow) from investing activities, including discontinued operations.  Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.",
                            "label":  "Net Cash Provided by (Used in) Investing Activities",
                            "totalLabel":  "Net cash used in investing activities"
                            }
                        }
                    },
                "localname":  "NetCashProvidedByUsedInInvestingActivities",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Net Cash Provided by (Used in) Investing Activities [Abstract]",
                            "terseLabel":  "Cash flows from investing activities"
                            }
                        }
                    },
                "localname":  "NetCashProvidedByUsedInInvestingActivitiesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_NetCashProvidedByUsedInOperatingActivities":  {
                "auth_ref":  [
                    "r103",
                    "r106",
                    "r109"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
                        "weight":  1.0
                        }
                    },
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cash inflow (outflow) from operating activities, including discontinued operations.  Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.",
                            "label":  "Net Cash Provided by (Used in) Operating Activities",
                            "totalLabel":  "Net cash provided by operating activities"
                            }
                        }
                    },
                "localname":  "NetCashProvidedByUsedInOperatingActivities",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Net Cash Provided by (Used in) Operating Activities [Abstract]",
                            "terseLabel":  "Cash flows from operating activities"
                            }
                        }
                    },
                "localname":  "NetCashProvidedByUsedInOperatingActivitiesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_NetIncomeLoss":  {
                "auth_ref":  [
                    "r0",
                    "r65",
                    "r68",
                    "r74",
                    "r109",
                    "r121",
                    "r133",
                    "r135",
                    "r136",
                    "r137",
                    "r138",
                    "r140",
                    "r141",
                    "r145",
                    "r176",
                    "r181",
                    "r185",
                    "r188",
                    "r191",
                    "r223",
                    "r519",
                    "r612",
                    "r636"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  1.0
                        },
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_ComprehensiveIncomeNetOfTax",
                        "weight":  1.0
                        },
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.",
                            "label":  "Net Income (Loss) Attributable to Parent",
                            "terseLabel":  "Net loss",
                            "totalLabel":  "Net loss"
                            }
                        }
                    },
                "localname":  "NetIncomeLoss",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS",
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS",
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREBasicandDilutedLossPerShareDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting.  Includes, but is not limited to, quantification of the expected or actual impact.",
                            "label":  "New Accounting Pronouncements, Policy [Policy Text Block]",
                            "terseLabel":  "Recent Accounting Pronouncements"
                            }
                        }
                    },
                "localname":  "NewAccountingPronouncementsPolicyPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_NoncurrentAssets":  {
                "auth_ref":  [
                    "r195"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.",
                            "label":  "Long-Lived Assets",
                            "terseLabel":  "Long-Lived Assets"
                            }
                        }
                    },
                "localname":  "NoncurrentAssets",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONPropertyandEquipmentbyGeographicRegionDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_NonoperatingIncomeExpense":  {
                "auth_ref":  [
                    "r85"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).",
                            "label":  "Nonoperating Income (Expense)",
                            "totalLabel":  "Other expense, net"
                            }
                        }
                    },
                "localname":  "NonoperatingIncomeExpense",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_NonoperatingIncomeExpenseAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Nonoperating Income (Expense) [Abstract]",
                            "terseLabel":  "Other income (expense):"
                            }
                        }
                    },
                "localname":  "NonoperatingIncomeExpenseAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_NumberOfOperatingSegments":  {
                "auth_ref":  [
                    "r168"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Number of operating segments.  An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available.  An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.",
                            "label":  "Number of Operating Segments",
                            "terseLabel":  "Number of operating segments"
                            }
                        }
                    },
                "localname":  "NumberOfOperatingSegments",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/ORGANIZATIONNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "us-gaap_OperatingExpenses":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_OperatingIncomeLoss",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services.  Includes selling, general and administrative expense.",
                            "label":  "Operating Expenses",
                            "totalLabel":  "Total operating expenses"
                            }
                        }
                    },
                "localname":  "OperatingExpenses",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingExpensesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Operating Expenses [Abstract]",
                            "terseLabel":  "Operating expenses:"
                            }
                        }
                    },
                "localname":  "OperatingExpensesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_OperatingIncomeLoss":  {
                "auth_ref":  [
                    "r176",
                    "r181",
                    "r185",
                    "r188",
                    "r191"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The net result for the period of deducting operating expenses from operating revenues.",
                            "label":  "Operating Income (Loss)",
                            "totalLabel":  "(Loss) income from operations"
                            }
                        }
                    },
                "localname":  "OperatingIncomeLoss",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeaseCost":  {
                "auth_ref":  [
                    "r544",
                    "r552"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/LEASESComponentsofLeaseExpenseDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_LeaseCost",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term.  Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.",
                            "label":  "Operating Lease, Cost",
                            "terseLabel":  "Operating lease cost"
                            }
                        }
                    },
                "localname":  "OperatingLeaseCost",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESComponentsofLeaseExpenseDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeaseLiability":  {
                "auth_ref":  [
                    "r540"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails_1":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Present value of lessee's discounted obligation for lease payments from operating lease.",
                            "label":  "Operating Lease, Liability",
                            "netLabel":  "Present value of operating lease liabilities"
                            }
                        }
                    },
                "localname":  "OperatingLeaseLiability",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESMaturitiesofOperatingLeaseLiabilitiesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeaseLiabilityCurrent":  {
                "auth_ref":  [
                    "r540"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_LiabilitiesCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.",
                            "label":  "Operating Lease, Liability, Current",
                            "terseLabel":  "Operating lease liabilities, current portion"
                            }
                        }
                    },
                "localname":  "OperatingLeaseLiabilityCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeaseLiabilityNoncurrent":  {
                "auth_ref":  [
                    "r540"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_Liabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.",
                            "label":  "Operating Lease, Liability, Noncurrent",
                            "terseLabel":  "Operating lease liabilities, net of current portion"
                            }
                        }
                    },
                "localname":  "OperatingLeaseLiabilityNoncurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeasePayments":  {
                "auth_ref":  [
                    "r541",
                    "r546"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.",
                            "label":  "Operating Lease, Payments",
                            "terseLabel":  "Cash paid for operating leases"
                            }
                        }
                    },
                "localname":  "OperatingLeasePayments",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESSupplementalCashFlowInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeaseRightOfUseAsset":  {
                "auth_ref":  [
                    "r539"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_Assets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of lessee's right to use underlying asset under operating lease.",
                            "label":  "Operating Lease, Right-of-Use Asset",
                            "terseLabel":  "Operating right-of-use assets"
                            }
                        }
                    },
                "localname":  "OperatingLeaseRightOfUseAsset",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent":  {
                "auth_ref":  [
                    "r549",
                    "r552"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Weighted average discount rate for operating lease calculated at point in time.",
                            "label":  "Operating Lease, Weighted Average Discount Rate, Percent",
                            "terseLabel":  "Weighted-average incremental borrowing rate"
                            }
                        }
                    },
                "localname":  "OperatingLeaseWeightedAverageDiscountRatePercent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESSupplementalBalanceSheetInformationofOperatingLeasesDetailsDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1":  {
                "auth_ref":  [
                    "r548",
                    "r552"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
                            "label":  "Operating Lease, Weighted Average Remaining Lease Term",
                            "terseLabel":  "Weighted-average remaining lease term"
                            }
                        }
                    },
                "localname":  "OperatingLeaseWeightedAverageRemainingLeaseTerm1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESSupplementalBalanceSheetInformationofOperatingLeasesDetailsDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_OperatingLossCarryforwards":  {
                "auth_ref":  [
                    "r430"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.",
                            "label":  "Operating Loss Carryforwards",
                            "terseLabel":  "Federal, state and foreign net operating losses"
                            }
                        }
                    },
                "localname":  "OperatingLossCarryforwards",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESAdditionalInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLossCarryforwardsLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Operating Loss Carryforwards [Line Items]",
                            "terseLabel":  "Operating Loss Carryforwards [Line Items]"
                            }
                        }
                    },
                "localname":  "OperatingLossCarryforwardsLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESAdditionalInformationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_OperatingLossCarryforwardsTable":  {
                "auth_ref":  [
                    "r431"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Schedule reflecting pertinent information, such as tax authority, amounts, and expiration dates, of net operating loss carryforwards, including an assessment of the likelihood of utilization.",
                            "label":  "Operating Loss Carryforwards [Table]",
                            "terseLabel":  "Operating Loss Carryforwards [Table]"
                            }
                        }
                    },
                "localname":  "OperatingLossCarryforwardsTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESAdditionalInformationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Organization, Consolidation and Presentation of Financial Statements [Abstract]",
                            "terseLabel":  "Organization, Consolidation and Presentation of Financial Statements [Abstract]"
                            }
                        }
                    },
                "localname":  "OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_OtherAccruedLiabilitiesCurrent":  {
                "auth_ref":  [
                    "r7",
                    "r8",
                    "r9",
                    "r43"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSAccruedExpensesDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_AccruedLiabilitiesCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.",
                            "label":  "Other Accrued Liabilities, Current",
                            "terseLabel":  "Other accrued expenses"
                            }
                        }
                    },
                "localname":  "OtherAccruedLiabilitiesCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSAccruedExpensesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherAssetsNoncurrent":  {
                "auth_ref":  [
                    "r38"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_Assets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of noncurrent assets classified as other.",
                            "label":  "Other Assets, Noncurrent",
                            "terseLabel":  "Other assets"
                            }
                        }
                    },
                "localname":  "OtherAssetsNoncurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherAssetsNoncurrentAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Other Assets, Noncurrent [Abstract]",
                            "terseLabel":  "Capitalized Software Costs"
                            }
                        }
                    },
                "localname":  "OtherAssetsNoncurrentAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESCapitalizedSoftwareCostsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_OtherCommitmentsAxis":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by type of other commitment.",
                            "label":  "Other Commitments [Axis]",
                            "terseLabel":  "Other Commitments [Axis]"
                            }
                        }
                    },
                "localname":  "OtherCommitmentsAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COMMITMENTSANDCONTINGENCIESDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_OtherCommitmentsDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Other future obligation.",
                            "label":  "Other Commitments [Domain]",
                            "terseLabel":  "Other Commitments [Domain]"
                            }
                        }
                    },
                "localname":  "OtherCommitmentsDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/COMMITMENTSANDCONTINGENCIESDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent":  {
                "auth_ref":  [
                    "r60"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_OtherComprehensiveIncomeLossNetOfTax",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness, attributable to parent.",
                            "label":  "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent",
                            "terseLabel":  "Unrealized loss on interest rate swap contracts"
                            }
                        }
                    },
                "localname":  "OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax":  {
                "auth_ref":  [
                    "r57",
                    "r60",
                    "r493",
                    "r496",
                    "r506"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.",
                            "label":  "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax",
                            "terseLabel":  "Amount of Gain (Loss) Recognized in Other Comprehensive Loss on Derivative"
                            }
                        }
                    },
                "localname":  "OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSIncomeforDerivativeInstrumentsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax":  {
                "auth_ref":  [
                    "r60",
                    "r63",
                    "r497"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.",
                            "label":  "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax",
                            "terseLabel":  "Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss"
                            }
                        }
                    },
                "localname":  "OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSIncomeforDerivativeInstrumentsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax":  {
                "auth_ref":  [
                    "r56"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_OtherComprehensiveIncomeLossNetOfTax",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.",
                            "label":  "Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax",
                            "terseLabel":  "Foreign currency translation adjustment"
                            }
                        }
                    },
                "localname":  "OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherComprehensiveIncomeLossNetOfTax":  {
                "auth_ref":  [
                    "r66",
                    "r69",
                    "r72",
                    "r75",
                    "r305",
                    "r525",
                    "r530",
                    "r531",
                    "r613",
                    "r637"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_ComprehensiveIncomeNetOfTax",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount after tax and reclassification adjustments of other comprehensive income (loss).",
                            "label":  "Other Comprehensive Income (Loss), Net of Tax",
                            "totalLabel":  "Other comprehensive (loss) income, net of tax"
                            }
                        }
                    },
                "localname":  "OtherComprehensiveIncomeLossNetOfTax",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Other Comprehensive Income (Loss), Net of Tax [Abstract]",
                            "terseLabel":  "Other comprehensive (loss) income, net of tax:"
                            }
                        }
                    },
                "localname":  "OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent":  {
                "auth_ref":  [
                    "r66",
                    "r69",
                    "r476",
                    "r477",
                    "r481"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount after tax of other comprehensive income (loss) attributable to parent entity.",
                            "label":  "Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent",
                            "terseLabel":  "Other comprehensive income (loss), net of tax"
                            }
                        }
                    },
                "localname":  "OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax":  {
                "auth_ref":  [
                    "r58",
                    "r60"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_OtherComprehensiveIncomeLossNetOfTax",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, after tax and before adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).  Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.",
                            "label":  "OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax",
                            "terseLabel":  "Net change in unrealized gains (losses) on investments"
                            }
                        }
                    },
                "localname":  "OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherIncomeMember":  {
                "auth_ref":  [
                    "r503"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Primary financial statement caption encompassing other revenue.",
                            "label":  "Other Income [Member]",
                            "terseLabel":  "Other income (expense), net"
                            }
                        }
                    },
                "localname":  "OtherIncomeMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESForeignCurrencyTransactionsandTranslationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_OtherLiabilitiesCurrent":  {
                "auth_ref":  [
                    "r6",
                    "r7",
                    "r43"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_LiabilitiesCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer.",
                            "label":  "Other Liabilities, Current",
                            "terseLabel":  "Other liabilities"
                            }
                        }
                    },
                "localname":  "OtherLiabilitiesCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherLiabilitiesNoncurrent":  {
                "auth_ref":  [
                    "r48"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_Liabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.",
                            "label":  "Other Liabilities, Noncurrent",
                            "terseLabel":  "Other liabilities, non-current"
                            }
                        }
                    },
                "localname":  "OtherLiabilitiesNoncurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherNoncurrentLiabilitiesMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Primary financial statement caption encompassing other noncurrent liabilities.",
                            "label":  "Other Noncurrent Liabilities [Member]",
                            "terseLabel":  "Other liabilities, non-current"
                            }
                        }
                    },
                "localname":  "OtherNoncurrentLiabilitiesMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSDerivativeLiabilitiesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_OtherNonoperatingIncomeExpense":  {
                "auth_ref":  [
                    "r87"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_NonoperatingIncomeExpense",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of income (expense) related to nonoperating activities, classified as other.",
                            "label":  "Other Nonoperating Income (Expense)",
                            "terseLabel":  "Other, net"
                            }
                        }
                    },
                "localname":  "OtherNonoperatingIncomeExpense",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsForProceedsFromOtherInvestingActivities":  {
                "auth_ref":  [
                    "r91",
                    "r95",
                    "r127"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInInvestingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cash (inflow) outflow from investing activities classified as other.",
                            "label":  "Payments for (Proceeds from) Other Investing Activities",
                            "negatedTerseLabel":  "Other, net"
                            }
                        }
                    },
                "localname":  "PaymentsForProceedsFromOtherInvestingActivities",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsForRepurchaseOfCommonStock":  {
                "auth_ref":  [
                    "r98"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInFinancingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The cash outflow to reacquire common stock during the period.",
                            "label":  "Payments for Repurchase of Common Stock",
                            "negatedTerseLabel":  "Repurchases of common stock"
                            }
                        }
                    },
                "localname":  "PaymentsForRepurchaseOfCommonStock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsForRestructuring":  {
                "auth_ref":  [
                    "r102",
                    "r270"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cash payments made as the result of exit or disposal activities.  Excludes payments associated with a discontinued operation or an asset retirement obligation.",
                            "label":  "Payments for Restructuring",
                            "negatedTerseLabel":  "Cash payments"
                            }
                        }
                    },
                "localname":  "PaymentsForRestructuring",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURINGDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsOfDebtRestructuringCosts":  {
                "auth_ref":  [
                    "r100"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The cash outflow for cost incurred in the modification of term of existing debt agreement in order for the entity to achieve some advantage.",
                            "label":  "Payments of Debt Restructuring Costs",
                            "terseLabel":  "Consent fees related to indenture"
                            }
                        }
                    },
                "localname":  "PaymentsOfDebtRestructuringCosts",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsOfFinancingCosts":  {
                "auth_ref":  [
                    "r100"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInFinancingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The cash outflow for loan and debt issuance costs.",
                            "label":  "Payments of Financing Costs",
                            "negatedTerseLabel":  "Payments of debt issuance and modification costs"
                            }
                        }
                    },
                "localname":  "PaymentsOfFinancingCosts",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation":  {
                "auth_ref":  [
                    "r98"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInFinancingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cash outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement.",
                            "label":  "Payment, Tax Withholding, Share-based Payment Arrangement",
                            "negatedTerseLabel":  "Payment of tax withholdings for employee stock plans"
                            }
                        }
                    },
                "localname":  "PaymentsRelatedToTaxWithholdingForShareBasedCompensation",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt":  {
                "auth_ref":  [
                    "r89",
                    "r92",
                    "r205"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInInvestingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cash outflow to acquire investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
                            "label":  "Payments to Acquire Debt Securities, Available-for-sale",
                            "negatedLabel":  "Purchases of marketable investments"
                            }
                        }
                    },
                "localname":  "PaymentsToAcquireAvailableForSaleSecuritiesDebt",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsToAcquireBusinessesGross":  {
                "auth_ref":  [
                    "r93",
                    "r472"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The cash outflow associated with the acquisition of business during the period.  The cash portion only of the acquisition price.",
                            "label":  "Payments to Acquire Businesses, Gross",
                            "terseLabel":  "Cash paid in acquisition"
                            }
                        }
                    },
                "localname":  "PaymentsToAcquireBusinessesGross",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired":  {
                "auth_ref":  [
                    "r93"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInInvestingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.",
                            "label":  "Payments to Acquire Businesses, Net of Cash Acquired",
                            "negatedTerseLabel":  "Cash paid for acquisitions, net of cash acquired"
                            }
                        }
                    },
                "localname":  "PaymentsToAcquireBusinessesNetOfCashAcquired",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsToAcquireEquityMethodInvestments":  {
                "auth_ref":  [
                    "r93"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInInvestingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.",
                            "label":  "Payments to Acquire Equity Method Investments",
                            "negatedTerseLabel":  "Purchases of non-marketable investments"
                            }
                        }
                    },
                "localname":  "PaymentsToAcquireEquityMethodInvestments",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsToAcquirePropertyPlantAndEquipment":  {
                "auth_ref":  [
                    "r94"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  7.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInInvestingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.",
                            "label":  "Payments to Acquire Property, Plant, and Equipment",
                            "negatedLabel":  "Capital expenditures"
                            }
                        }
                    },
                "localname":  "PaymentsToAcquirePropertyPlantAndEquipment",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsToDevelopSoftware":  {
                "auth_ref":  [
                    "r94"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInInvestingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The cash outflow associated with the development or modification of software programs or applications for internal use (that is, not to be sold, leased or otherwise marketed to others) that qualify for capitalization.",
                            "label":  "Payments to Develop Software",
                            "negatedLabel":  "Capitalized software costs"
                            }
                        }
                    },
                "localname":  "PaymentsToDevelopSoftware",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock":  {
                "auth_ref":  [
                    "r338",
                    "r340",
                    "r346",
                    "r347",
                    "r348",
                    "r349",
                    "r350",
                    "r351",
                    "r352",
                    "r353",
                    "r354",
                    "r355",
                    "r356",
                    "r361"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for retirement benefits.",
                            "label":  "Retirement Benefits [Text Block]",
                            "terseLabel":  "401(K) SAVINGS PLAN"
                            }
                        }
                    },
                "localname":  "PensionAndOtherPostretirementBenefitsDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/A401KSAVINGSPLAN"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_PerformanceSharesMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Share-based payment arrangement awarded for meeting performance target.",
                            "label":  "Performance Shares [Member]",
                            "terseLabel":  "PRSUs"
                            }
                        }
                    },
                "localname":  "PerformanceSharesMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_PlanNameAxis":  {
                "auth_ref":  [
                    "r365",
                    "r394"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by plan name for share-based payment arrangement.",
                            "label":  "Plan Name [Axis]",
                            "terseLabel":  "Plan Name [Axis]"
                            }
                        }
                    },
                "localname":  "PlanNameAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_PlanNameDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Plan name for share-based payment arrangement.",
                            "label":  "Plan Name [Domain]",
                            "terseLabel":  "Plan Name [Domain]"
                            }
                        }
                    },
                "localname":  "PlanNameDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_PreferredStockParOrStatedValuePerShare":  {
                "auth_ref":  [
                    "r22"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.",
                            "label":  "Preferred Stock, Par or Stated Value Per Share",
                            "terseLabel":  "Preferred stock, par value (usd per share)"
                            }
                        }
                    },
                "localname":  "PreferredStockParOrStatedValuePerShare",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_PreferredStockSharesAuthorized":  {
                "auth_ref":  [
                    "r22"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.",
                            "label":  "Preferred Stock, Shares Authorized",
                            "terseLabel":  "Preferred stock authorized (in shares)"
                            }
                        }
                    },
                "localname":  "PreferredStockSharesAuthorized",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_PreferredStockSharesIssued":  {
                "auth_ref":  [
                    "r22"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury).  May be all or portion of the number of preferred shares authorized.  Excludes preferred shares that are classified as debt.",
                            "label":  "Preferred Stock, Shares Issued",
                            "terseLabel":  "Preferred stock issued (in shares)"
                            }
                        }
                    },
                "localname":  "PreferredStockSharesIssued",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_PreferredStockSharesOutstanding":  {
                "auth_ref":  [
                    "r22"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders.  Does not include preferred shares that have been repurchased.",
                            "label":  "Preferred Stock, Shares Outstanding",
                            "terseLabel":  "Preferred stock outstanding (in shares)"
                            }
                        }
                    },
                "localname":  "PreferredStockSharesOutstanding",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_PrepaidExpenseAndOtherAssetsCurrent":  {
                "auth_ref":  [
                    "r3",
                    "r31",
                    "r32"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_AssetsCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.",
                            "label":  "Prepaid Expense and Other Assets, Current",
                            "terseLabel":  "Prepaid expenses and other current assets"
                            }
                        }
                    },
                "localname":  "PrepaidExpenseAndOtherAssetsCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ProceedsFromIssuanceOfDebt":  {
                "auth_ref":  [
                    "r97"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInFinancingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The cash inflow during the period from additional borrowings in aggregate debt.  Includes proceeds from short-term and long-term debt.",
                            "label":  "Proceeds from Issuance of Debt",
                            "terseLabel":  "Proceeds from term loan debt, net of discount"
                            }
                        }
                    },
                "localname":  "ProceedsFromIssuanceOfDebt",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ProceedsFromIssuanceOfLongTermDebt":  {
                "auth_ref":  [
                    "r97"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.",
                            "label":  "Proceeds from Issuance of Long-term Debt",
                            "terseLabel":  "Net proceeds from the Notes"
                            }
                        }
                    },
                "localname":  "ProceedsFromIssuanceOfLongTermDebt",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities":  {
                "auth_ref":  [
                    "r89",
                    "r90",
                    "r205"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInInvestingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cash inflow from sale, maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
                            "label":  "Proceeds from Sale and Maturity of Debt Securities, Available-for-sale",
                            "terseLabel":  "Maturities and sales of investments"
                            }
                        }
                    },
                "localname":  "ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ProceedsFromStockPlans":  {
                "auth_ref":  [
                    "r96"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInFinancingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The cash inflow associated with the amount received from the stock plan during the period.",
                            "label":  "Proceeds from Stock Plans",
                            "terseLabel":  "Proceeds from employee stock plans"
                            }
                        }
                    },
                "localname":  "ProceedsFromStockPlans",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PropertyPlantAndEquipmentByTypeAxis":  {
                "auth_ref":  [
                    "r37",
                    "r267"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by type of long-lived, physical assets used to produce goods and services and not intended for resale.",
                            "label":  "Long-Lived Tangible Asset [Axis]",
                            "terseLabel":  "Property, Plant and Equipment, Type [Axis]"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentByTypeAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_PropertyPlantAndEquipmentGross":  {
                "auth_ref":  [
                    "r36",
                    "r265"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_PropertyPlantAndEquipmentNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale.  Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.",
                            "label":  "Property, Plant and Equipment, Gross",
                            "terseLabel":  "Total property and equipment, gross"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentGross",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PropertyPlantAndEquipmentLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Property, Plant and Equipment [Line Items]",
                            "terseLabel":  "Property, Plant and Equipment [Line Items]"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPropertyandEquipmentDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_PropertyPlantAndEquipmentNet":  {
                "auth_ref":  [
                    "r11",
                    "r12",
                    "r267",
                    "r634"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  9.0,
                        "parentTag":  "us-gaap_Assets",
                        "weight":  1.0
                        },
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale.  Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.",
                            "label":  "Property, Plant and Equipment, Net",
                            "terseLabel":  "Property and equipment, net",
                            "totalLabel":  "Total property and equipment, net"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentNet",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS",
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PropertyPlantAndEquipmentPolicyTextBlock":  {
                "auth_ref":  [
                    "r35",
                    "r117",
                    "r267",
                    "r662",
                    "r663"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for long-lived, physical asset used in normal conduct of business and not intended for resale.  Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections.",
                            "label":  "Property, Plant and Equipment, Policy [Policy Text Block]",
                            "terseLabel":  "Property and Equipment"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_PropertyPlantAndEquipmentTextBlock":  {
                "auth_ref":  [
                    "r11",
                    "r267"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale.  Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.",
                            "label":  "Property, Plant and Equipment [Table Text Block]",
                            "terseLabel":  "Schedule of property and equipment, net"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_PropertyPlantAndEquipmentTypeDomain":  {
                "auth_ref":  [
                    "r11",
                    "r265"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Listing of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.  Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.",
                            "label":  "Long-Lived Tangible Asset [Domain]",
                            "terseLabel":  "Property, Plant and Equipment, Type [Domain]"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentTypeDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_PropertyPlantAndEquipmentUsefulLife":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.  Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.",
                            "label":  "Property, Plant and Equipment, Useful Life",
                            "terseLabel":  "Property and equipment, useful life",
                            "verboseLabel":  "Useful\u00a0Life"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentUsefulLife",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPropertyandEquipmentDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_ProvisionForDoubtfulAccounts":  {
                "auth_ref":  [
                    "r78",
                    "r230"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  11.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of expense (reversal of expense) for expected credit loss on accounts receivable.",
                            "label":  "Accounts Receivable, Credit Loss Expense (Reversal)",
                            "terseLabel":  "Bad debt expense",
                            "verboseLabel":  "Bad debt expense recognized"
                            }
                        }
                    },
                "localname":  "ProvisionForDoubtfulAccounts",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESAllowanceforCreditLossesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicy":  {
                "auth_ref":  [
                    "r30",
                    "r117",
                    "r202"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for determining the allowance for doubtful accounts for trade and other accounts receivable balances, and when impairments, charge-offs or recoveries are recognized.",
                            "label":  "Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block]",
                            "terseLabel":  "Allowance for Doubtful Accounts"
                            }
                        }
                    },
                "localname":  "ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicy",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
                            "label":  "Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]",
                            "terseLabel":  "Reconciliation of Unrecognized Tax Benefits"
                            }
                        }
                    },
                "localname":  "ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESReconciliationofUnrecognizedTaxBenefitsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RelatedPartyTransactionsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Related Party Transactions [Abstract]",
                            "terseLabel":  "Related Party Transactions [Abstract]"
                            }
                        }
                    },
                "localname":  "RelatedPartyTransactionsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RelatedPartyTransactionsDisclosureTextBlock":  {
                "auth_ref":  [
                    "r554",
                    "r555",
                    "r556",
                    "r557",
                    "r558"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for related party transactions.  Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.",
                            "label":  "Related Party Transactions Disclosure [Text Block]",
                            "terseLabel":  "RELATED PARTY TRANSACTIONS"
                            }
                        }
                    },
                "localname":  "RelatedPartyTransactionsDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RELATEDPARTYTRANSACTIONS"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_RepaymentsOfDebt":  {
                "auth_ref":  [
                    "r99"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInFinancingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The cash outflow during the period from the repayment of aggregate short-term and long-term debt.  Excludes payment of capital lease obligations.",
                            "label":  "Repayments of Debt",
                            "negatedLabel":  "Repayment of debt"
                            }
                        }
                    },
                "localname":  "RepaymentsOfDebt",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ResearchAndDevelopmentExpense":  {
                "auth_ref":  [
                    "r406",
                    "r675"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_OperatingExpenses",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.",
                            "label":  "Research and Development Expense",
                            "terseLabel":  "Research and development"
                            }
                        }
                    },
                "localname":  "ResearchAndDevelopmentExpense",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ResearchAndDevelopmentExpenseMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Primary financial statement caption in which the reported facts about research and development expense have been included.",
                            "label":  "Research and Development Expense [Member]",
                            "terseLabel":  "Research and development"
                            }
                        }
                    },
                "localname":  "ResearchAndDevelopmentExpenseMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_ResearchAndDevelopmentExpensePolicy":  {
                "auth_ref":  [
                    "r117",
                    "r406"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for costs it has incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process.",
                            "label":  "Research and Development Expense, Policy [Policy Text Block]",
                            "terseLabel":  "Research and Development"
                            }
                        }
                    },
                "localname":  "ResearchAndDevelopmentExpensePolicy",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_RestrictedCashCurrent":  {
                "auth_ref":  [
                    "r1",
                    "r10",
                    "r116"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cash restricted as to withdrawal or usage, classified as current.  Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.",
                            "label":  "Restricted Cash, Current",
                            "terseLabel":  "Restricted cash included in prepaid expenses and other current assets"
                            }
                        }
                    },
                "localname":  "RestrictedCashCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_RestrictedCashNoncurrent":  {
                "auth_ref":  [
                    "r5",
                    "r13",
                    "r116",
                    "r660"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cash restricted as to withdrawal or usage, classified as noncurrent.  Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.",
                            "label":  "Restricted Cash, Noncurrent",
                            "terseLabel":  "Restricted cash included in other assets"
                            }
                        }
                    },
                "localname":  "RestrictedCashNoncurrent",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_RestrictedStockUnitsRSUMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Share instrument which is convertible to stock or an equivalent amount of cash, after a specified period of time or when specified performance conditions are met.",
                            "label":  "Restricted Stock Units (RSUs) [Member]",
                            "terseLabel":  "RSUs"
                            }
                        }
                    },
                "localname":  "RestrictedStockUnitsRSUMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_RestructuringAndRelatedActivitiesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Restructuring and Related Activities [Abstract]"
                            }
                        }
                    },
                "localname":  "RestructuringAndRelatedActivitiesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock":  {
                "auth_ref":  [
                    "r282"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for restructuring and related activities.  Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.",
                            "label":  "Restructuring and Related Activities Disclosure [Text Block]",
                            "terseLabel":  "RESTRUCTURING"
                            }
                        }
                    },
                "localname":  "RestructuringAndRelatedActivitiesDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURING"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_RestructuringCharges":  {
                "auth_ref":  [
                    "r108",
                    "r269",
                    "r274",
                    "r279"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_OperatingExpenses",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of expenses associated with exit or disposal activities pursuant to an authorized plan.  Excludes expenses related to a discontinued operation or an asset retirement obligation.",
                            "label":  "Restructuring Charges",
                            "terseLabel":  "Restructuring",
                            "verboseLabel":  "Total restructuring expense"
                            }
                        }
                    },
                "localname":  "RestructuringCharges",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS",
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURINGDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_RestructuringChargesMember":  {
                "auth_ref":  [
                    "r271",
                    "r274",
                    "r280"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Primary financial statement caption in which the reported facts about restructuring charges have been included.",
                            "label":  "Restructuring Charges [Member]",
                            "terseLabel":  "Restructuring"
                            }
                        }
                    },
                "localname":  "RestructuringChargesMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_RestructuringCostAndReserveAxis":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by type of restructuring cost.",
                            "label":  "Restructuring Type [Axis]",
                            "terseLabel":  "Restructuring Type [Axis]"
                            }
                        }
                    },
                "localname":  "RestructuringCostAndReserveAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURINGDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RestructuringCostAndReserveLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Restructuring Cost and Reserve [Line Items]",
                            "terseLabel":  "Restructuring Cost and Reserve [Line Items]"
                            }
                        }
                    },
                "localname":  "RestructuringCostAndReserveLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURINGDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RestructuringCostsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Restructuring Costs [Abstract]",
                            "terseLabel":  "Restructuring Costs [Abstract]"
                            }
                        }
                    },
                "localname":  "RestructuringCostsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURINGDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RestructuringReserve":  {
                "auth_ref":  [
                    "r270",
                    "r276"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.",
                            "label":  "Restructuring Reserve",
                            "periodEndLabel":  "Ending balance",
                            "periodStartLabel":  "Beginning balance"
                            }
                        }
                    },
                "localname":  "RestructuringReserve",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURINGDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_RestructuringReserveRollForward":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
                            "label":  "Restructuring Reserve [Roll Forward]",
                            "terseLabel":  "Restructuring Reserve [Roll Forward]"
                            }
                        }
                    },
                "localname":  "RestructuringReserveRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURINGDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RestructuringReserveTranslationAdjustment":  {
                "auth_ref":  [
                    "r270",
                    "r278"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.",
                            "label":  "Restructuring Reserve, Foreign Currency Translation Gain (Loss)",
                            "negatedTerseLabel":  "Effect of foreign currency translation"
                            }
                        }
                    },
                "localname":  "RestructuringReserveTranslationAdjustment",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURINGDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_RetainedEarningsAccumulatedDeficit":  {
                "auth_ref":  [
                    "r26",
                    "r311",
                    "r398",
                    "r632",
                    "r649",
                    "r650"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_StockholdersEquity",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The cumulative amount of the reporting entity's undistributed earnings or deficit.",
                            "label":  "Retained Earnings (Accumulated Deficit)",
                            "terseLabel":  "Accumulated deficit"
                            }
                        }
                    },
                "localname":  "RetainedEarningsAccumulatedDeficit",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_RetainedEarningsMember":  {
                "auth_ref":  [
                    "r129",
                    "r130",
                    "r131",
                    "r134",
                    "r139",
                    "r141",
                    "r226",
                    "r395",
                    "r396",
                    "r397",
                    "r439",
                    "r440",
                    "r646",
                    "r648"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The cumulative amount of the reporting entity's undistributed earnings or deficit.",
                            "label":  "Retained Earnings [Member]",
                            "terseLabel":  "Accumulated Deficit"
                            }
                        }
                    },
                "localname":  "RetainedEarningsMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_RevenueFromContractWithCustomerAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Revenue from Contract with Customer [Abstract]",
                            "terseLabel":  "Revenue from Contract with Customer [Abstract]"
                            }
                        }
                    },
                "localname":  "RevenueFromContractWithCustomerAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax":  {
                "auth_ref":  [
                    "r171",
                    "r172",
                    "r180",
                    "r186",
                    "r187",
                    "r193",
                    "r194",
                    "r197",
                    "r331",
                    "r332",
                    "r594"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_GrossProfit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer.  Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.",
                            "label":  "Revenue from Contract with Customer, Excluding Assessed Tax",
                            "verboseLabel":  "Revenue"
                            }
                        }
                    },
                "localname":  "RevenueFromContractWithCustomerExcludingAssessedTax",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS",
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONRevenuebyGeographicRegionDetails",
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONSourcesofRevenueDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_RevenueFromContractWithCustomerPolicyTextBlock":  {
                "auth_ref":  [
                    "r118",
                    "r323",
                    "r324",
                    "r325",
                    "r326",
                    "r327",
                    "r328",
                    "r329",
                    "r330",
                    "r337"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for revenue from contract with customer.",
                            "label":  "Revenue from Contract with Customer [Policy Text Block]",
                            "terseLabel":  "Revenue Recognition and Cost of Revenue"
                            }
                        }
                    },
                "localname":  "RevenueFromContractWithCustomerPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_RevenueFromContractWithCustomerTextBlock":  {
                "auth_ref":  [
                    "r313",
                    "r314",
                    "r315",
                    "r316",
                    "r317",
                    "r318",
                    "r321",
                    "r322",
                    "r334",
                    "r337"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset.  Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer.  Excludes insurance and lease contracts.",
                            "label":  "Revenue from Contract with Customer [Text Block]",
                            "terseLabel":  "DEFERRED REVENUE AND REMAINING PERFORMANCE OBLIGATIONS"
                            }
                        }
                    },
                "localname":  "RevenueFromContractWithCustomerTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEFERREDREVENUEANDREMAININGPERFORMANCEOBLIGATIONS"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_RevenueRemainingPerformanceObligation":  {
                "auth_ref":  [
                    "r319"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of transaction price allocated to performance obligation that has not been recognized as revenue.",
                            "label":  "Revenue, Remaining Performance Obligation, Amount",
                            "terseLabel":  "Expected to be recognized from remaining performance obligations"
                            }
                        }
                    },
                "localname":  "RevenueRemainingPerformanceObligation",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEFERREDREVENUEANDREMAININGPERFORMANCEOBLIGATIONSDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]",
                            "terseLabel":  "Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]"
                            }
                        }
                    },
                "localname":  "RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEFERREDREVENUEANDREMAININGPERFORMANCEOBLIGATIONSDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1":  {
                "auth_ref":  [
                    "r320"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
                            "label":  "Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period",
                            "terseLabel":  "Period within obligations expected to be recognized"
                            }
                        }
                    },
                "localname":  "RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEFERREDREVENUEANDREMAININGPERFORMANCEOBLIGATIONSDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis":  {
                "auth_ref":  [
                    "r320"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Start date of time band for expected timing of satisfaction of remaining performance obligation, in CCYY-MM-DD format.",
                            "label":  "Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]",
                            "terseLabel":  "Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]"
                            }
                        }
                    },
                "localname":  "RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEFERREDREVENUEANDREMAININGPERFORMANCEOBLIGATIONSDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of information about expected timing for satisfying remaining performance obligation.",
                            "label":  "Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table]",
                            "terseLabel":  "Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table]"
                            }
                        }
                    },
                "localname":  "RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEFERREDREVENUEANDREMAININGPERFORMANCEOBLIGATIONSDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RevenueRemainingPerformanceObligationPercentage":  {
                "auth_ref":  [
                    "r320"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Percentage of remaining performance obligation to total remaining performance obligation not recognized as revenue.",
                            "label":  "Revenue, Remaining Performance Obligation, Percentage",
                            "terseLabel":  "Amount of revenue expected to be recognized in next 18 months"
                            }
                        }
                    },
                "localname":  "RevenueRemainingPerformanceObligationPercentage",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEFERREDREVENUEANDREMAININGPERFORMANCEOBLIGATIONSDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_RevolvingCreditFacilityMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Arrangement in which loan proceeds can continuously be obtained following repayments, but the total amount borrowed cannot exceed a specified maximum amount.",
                            "label":  "Revolving Credit Facility [Member]",
                            "terseLabel":  "Revolving Credit Facility"
                            }
                        }
                    },
                "localname":  "RevolvingCreditFacilityMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability":  {
                "auth_ref":  [
                    "r547",
                    "r552"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of increase in right-of-use asset obtained in exchange for operating lease liability.",
                            "label":  "Right-of-Use Asset Obtained in Exchange for Operating Lease Liability",
                            "terseLabel":  "Right-of-use assets obtained in exchange for lease obligations"
                            }
                        }
                    },
                "localname":  "RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESSupplementalCashFlowInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the components of accrued liabilities.",
                            "label":  "Schedule of Accrued Liabilities [Table Text Block]",
                            "terseLabel":  "Schedule of accrued expenses"
                            }
                        }
                    },
                "localname":  "ScheduleOfAccruedLiabilitiesTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable":  {
                "auth_ref":  [
                    "r149"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Schedule for securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by Antidilutive Securities.",
                            "label":  "Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]",
                            "terseLabel":  "Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]"
                            }
                        }
                    },
                "localname":  "ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREAntidilutiveSharesExcludedFromCalculationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock":  {
                "auth_ref":  [
                    "r149"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.",
                            "label":  "Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]",
                            "terseLabel":  "Anti-dilutive shares excluded from calculation of net loss per share"
                            }
                        }
                    },
                "localname":  "ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHARETables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Debt Securities, Available-for-sale [Line Items]",
                            "terseLabel":  "Debt Securities, Available-for-sale [Line Items]"
                            }
                        }
                    },
                "localname":  "ScheduleOfAvailableForSaleSecuritiesLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSLongTermInvestmentsDetails",
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfAvailableForSaleSecuritiesTable":  {
                "auth_ref":  [
                    "r210",
                    "r211",
                    "r214",
                    "r215",
                    "r216",
                    "r217",
                    "r617",
                    "r618"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Schedule of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.",
                            "label":  "Schedule of Available-for-sale Securities [Table]",
                            "terseLabel":  "Schedule of Available-for-sale Securities [Table]"
                            }
                        }
                    },
                "localname":  "ScheduleOfAvailableForSaleSecuritiesTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable":  {
                "auth_ref":  [
                    "r460",
                    "r461"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Schedule reflecting each material business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities.",
                            "label":  "Schedule of Business Acquisitions, by Acquisition [Table]",
                            "terseLabel":  "Schedule of Business Acquisitions, by Acquisition [Table]"
                            }
                        }
                    },
                "localname":  "ScheduleOfBusinessAcquisitionsByAcquisitionTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAssetsAcquiredandLiabilitiesassumedDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the components of cash, cash equivalents, and investments.",
                            "label":  "Cash, Cash Equivalents and Investments [Table Text Block]",
                            "terseLabel":  "Schedule of Cash, Cash Equivalents and Investments"
                            }
                        }
                    },
                "localname":  "ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock":  {
                "auth_ref":  [
                    "r436"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.",
                            "label":  "Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]",
                            "terseLabel":  "Components of income tax provision (benefit)"
                            }
                        }
                    },
                "localname":  "ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock":  {
                "auth_ref":  [
                    "r427"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.",
                            "label":  "Schedule of Deferred Tax Assets and Liabilities [Table Text Block]",
                            "terseLabel":  "Schedule of the components of deferred tax assets and liabilities"
                            }
                        }
                    },
                "localname":  "ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock":  {
                "auth_ref":  [
                    "r492",
                    "r498",
                    "r502"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments.",
                            "label":  "Derivative Instruments, Gain (Loss) [Table Text Block]",
                            "terseLabel":  "Schedule of income recognized from derivative instruments"
                            }
                        }
                    },
                "localname":  "ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfDerivativeLiabilitiesAtFairValueTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of derivative liabilities at fair value.",
                            "label":  "Schedule of Derivative Liabilities at Fair Value [Table Text Block]",
                            "terseLabel":  "Schedule of fair values of derivative instruments"
                            }
                        }
                    },
                "localname":  "ScheduleOfDerivativeLiabilitiesAtFairValueTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock":  {
                "auth_ref":  [
                    "r148"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.",
                            "label":  "Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]",
                            "terseLabel":  "Basic and diluted loss per share"
                            }
                        }
                    },
                "localname":  "ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHARETables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock":  {
                "auth_ref":  [
                    "r415"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.",
                            "label":  "Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]",
                            "terseLabel":  "Schedule of effective income tax rate reconciliation"
                            }
                        }
                    },
                "localname":  "ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable":  {
                "auth_ref":  [
                    "r364",
                    "r390",
                    "r400"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of information about amount recognized for award under share-based payment arrangement.  Includes, but is not limited to, amount expensed in statement of income or comprehensive income, amount capitalized in statement of financial position, and corresponding reporting line item in financial statements.",
                            "label":  "Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table]",
                            "terseLabel":  "Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table]"
                            }
                        }
                    },
                "localname":  "ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock":  {
                "auth_ref":  [
                    "r364",
                    "r390",
                    "r400"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position.  Includes, but is not limited to, corresponding line item in financial statement.",
                            "label":  "Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]",
                            "terseLabel":  "Summary of stock-based compensation expense"
                            }
                        }
                    },
                "localname":  "ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock":  {
                "auth_ref":  [
                    "r193"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of entity-wide revenues from external customers for each product or service or each group of similar products or services if the information is not provided as part of the reportable operating segment information.",
                            "label":  "Revenue from External Customers by Products and Services [Table Text Block]",
                            "terseLabel":  "Schedule of revenue by source"
                            }
                        }
                    },
                "localname":  "ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock":  {
                "auth_ref":  [
                    "r509",
                    "r510"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis.  The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).",
                            "label":  "Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]",
                            "terseLabel":  "Summary of Assets and Liabilities Measured at Fair Value"
                            }
                        }
                    },
                "localname":  "ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfFiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock":  {
                "auth_ref":  [
                    "r251"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of finite-lived intangible assets acquired as part of a business combination or through an asset purchase, by major class and in total, including the value of the asset acquired, any significant residual value (the expected value of the asset at the end of its useful life) and the weighted-average amortization period.",
                            "label":  "Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]",
                            "terseLabel":  "Schedule of Gross Carrying Amount and Accumulated Amortization of Finite-lived Intangible Assets"
                            }
                        }
                    },
                "localname":  "ScheduleOfFiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable":  {
                "auth_ref":  [
                    "r251",
                    "r255",
                    "r595"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Schedule of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.",
                            "label":  "Schedule of Finite-Lived Intangible Assets [Table]",
                            "terseLabel":  "Schedule of Finite-Lived Intangible Assets [Table]"
                            }
                        }
                    },
                "localname":  "ScheduleOfFiniteLivedIntangibleAssetsTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSProFormaInformationDetails",
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESImpairmentIntangibleAssetsandGoodwillDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock":  {
                "auth_ref":  [
                    "r251",
                    "r255"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.",
                            "label":  "Schedule of Finite-Lived Intangible Assets [Table Text Block]",
                            "terseLabel":  "Schedule of Gross Carrying Amount and Accumulated Amortization of Finite-lived Intangible Assets"
                            }
                        }
                    },
                "localname":  "ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfGoodwillTextBlock":  {
                "auth_ref":  [
                    "r247",
                    "r248"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.",
                            "label":  "Schedule of Goodwill [Table Text Block]",
                            "terseLabel":  "Carrying Amount of Goodwill"
                            }
                        }
                    },
                "localname":  "ScheduleOfGoodwillTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock":  {
                "auth_ref":  [
                    "r124"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of income before income tax between domestic and foreign jurisdictions.",
                            "label":  "Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]",
                            "terseLabel":  "Summary of income before income tax, domestic and foreign"
                            }
                        }
                    },
                "localname":  "ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock":  {
                "auth_ref":  [
                    "r376"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the changes in outstanding nonvested performance-based units.",
                            "label":  "Schedule of Nonvested Performance-based Units Activity [Table Text Block]",
                            "terseLabel":  "Schedule of performance-based units activity"
                            }
                        }
                    },
                "localname":  "ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock":  {
                "auth_ref":  [
                    "r376"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the changes in outstanding nonvested restricted stock units.",
                            "label":  "Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]",
                            "terseLabel":  "Schedule of restricted stock unit activity"
                            }
                        }
                    },
                "localname":  "ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfPropertyPlantAndEquipmentTable":  {
                "auth_ref":  [
                    "r37",
                    "r267"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of information about physical assets used in the normal conduct of business and not intended for resale.  Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.",
                            "label":  "Property, Plant and Equipment [Table]",
                            "terseLabel":  "Property, Plant and Equipment [Table]"
                            }
                        }
                    },
                "localname":  "ScheduleOfPropertyPlantAndEquipmentTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTSPropertyandEquipmentDetails",
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPropertyandEquipmentDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock":  {
                "auth_ref":  [
                    "r464"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed.  May include but not limited to the following: (a) acquired receivables; (b) contingencies recognized at the acquisition date; and (c) the fair value of noncontrolling interests in the acquiree.",
                            "label":  "Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]",
                            "verboseLabel":  "Schedule of Assets Acquired and Liabilities Assumed and Purchase Price Allocation"
                            }
                        }
                    },
                "localname":  "ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfRestructuringAndRelatedCostsTable":  {
                "auth_ref":  [
                    "r272",
                    "r273",
                    "r277"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Table presenting the description of the restructuring costs, such as the expected cost; the costs incurred during the period; the cumulative costs incurred as of the balance sheet date; the income statement caption within which the restructuring charges recognized for the period are included; and the amount of and periodic changes to an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost by type of restructuring.",
                            "label":  "Schedule of Restructuring and Related Costs [Table]",
                            "terseLabel":  "Schedule of Restructuring and Related Costs [Table]"
                            }
                        }
                    },
                "localname":  "ScheduleOfRestructuringAndRelatedCostsTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURINGDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock":  {
                "auth_ref":  [
                    "r272",
                    "r273",
                    "r277"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets.",
                            "label":  "Restructuring and Related Costs [Table Text Block]",
                            "terseLabel":  "Schedule of Restructuring Activity"
                            }
                        }
                    },
                "localname":  "ScheduleOfRestructuringAndRelatedCostsTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURINGTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock":  {
                "auth_ref":  [
                    "r80",
                    "r196"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material.  An entity may also provide subtotals of geographic information about groups of countries.",
                            "label":  "Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]",
                            "terseLabel":  "Schedule of revenue from external customers and long-lived assets, by geographical areas"
                            }
                        }
                    },
                "localname":  "ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfSecuritiesOwnedNotReadilyMarketableTextBlock":  {
                "auth_ref":  [
                    "r598"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of not readily marketable securities and investments including, but not limited to, description of security or investment, fair value and value as measured by quoted price.",
                            "label":  "Securities Owned Not Readily Marketable [Table Text Block]",
                            "terseLabel":  "Non-Marketable Investments"
                            }
                        }
                    },
                "localname":  "ScheduleOfSecuritiesOwnedNotReadilyMarketableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable":  {
                "auth_ref":  [
                    "r176",
                    "r178",
                    "r184",
                    "r247"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "A table disclosing the profit or loss and total assets for each reportable segment of the entity.  An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.",
                            "label":  "Schedule of Segment Reporting Information, by Segment [Table]",
                            "terseLabel":  "Schedule of Segment Reporting Information, by Segment [Table]"
                            }
                        }
                    },
                "localname":  "ScheduleOfSegmentReportingInformationBySegmentTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONPropertyandEquipmentbyGeographicRegionDetails",
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONRevenuebyGeographicRegionDetails",
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONSourcesofRevenueDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable":  {
                "auth_ref":  [
                    "r365",
                    "r394"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of information about share-based payment arrangement.",
                            "label":  "Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]",
                            "terseLabel":  "Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]"
                            }
                        }
                    },
                "localname":  "ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSStockOptionPricingModelDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock":  {
                "auth_ref":  [
                    "r389"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of employee stock purchase plan activity.",
                            "label":  "Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block]",
                            "terseLabel":  "Schedule of employee stock purchase plan activity"
                            }
                        }
                    },
                "localname":  "ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock":  {
                "auth_ref":  [
                    "r370",
                    "r381",
                    "r383"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure for stock option plans.  Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.",
                            "label":  "Share-based Payment Arrangement, Option, Activity [Table Text Block]",
                            "terseLabel":  "Summary of stock option activity"
                            }
                        }
                    },
                "localname":  "ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock":  {
                "auth_ref":  [
                    "r386"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.",
                            "label":  "Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]",
                            "terseLabel":  "Schedule of black-scholes option-pricing model assumptions"
                            }
                        }
                    },
                "localname":  "ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock":  {
                "auth_ref":  [
                    "r421",
                    "r437"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the change in unrecognized tax benefits.",
                            "label":  "Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]",
                            "terseLabel":  "Summary of the reconciliation of unrecognized tax benefits"
                            }
                        }
                    },
                "localname":  "ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock":  {
                "auth_ref":  [
                    "r255"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.",
                            "label":  "Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]",
                            "terseLabel":  "Schedule of Estimated Remaining Intangible Asset Amortization"
                            }
                        }
                    },
                "localname":  "ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_SegmentReportingAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Segment Reporting [Abstract]",
                            "terseLabel":  "Segment Reporting [Abstract]"
                            }
                        }
                    },
                "localname":  "SegmentReportingAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_SegmentReportingDisclosureTextBlock":  {
                "auth_ref":  [
                    "r167",
                    "r169",
                    "r170",
                    "r176",
                    "r179",
                    "r185",
                    "r189",
                    "r190",
                    "r191",
                    "r192",
                    "r193",
                    "r196",
                    "r197",
                    "r198"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for reporting segments including data and tables.  Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.",
                            "label":  "Segment Reporting Disclosure [Text Block]",
                            "terseLabel":  "SEGMENT AND GEOGRAPHIC INFORMATION"
                            }
                        }
                    },
                "localname":  "SegmentReportingDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATION"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_SegmentReportingInformationLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Segment Reporting Information [Line Items]",
                            "terseLabel":  "Segment Reporting Information [Line Items]"
                            }
                        }
                    },
                "localname":  "SegmentReportingInformationLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONPropertyandEquipmentbyGeographicRegionDetails",
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONRevenuebyGeographicRegionDetails",
                    "http://www.cornerstoneondemand.com/role/SEGMENTANDGEOGRAPHICINFORMATIONSourcesofRevenueDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_SellingAndMarketingExpense":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_OperatingExpenses",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The aggregate total amount of expenses directly related to the marketing or selling of products or services.",
                            "label":  "Selling and Marketing Expense",
                            "terseLabel":  "Sales and marketing"
                            }
                        }
                    },
                "localname":  "SellingAndMarketingExpense",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_SellingAndMarketingExpenseMember":  {
                "auth_ref":  [
                    "r77"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Primary financial statement caption encompassing selling and marketing expense.",
                            "label":  "Selling and Marketing Expense [Member]",
                            "terseLabel":  "Sales and marketing"
                            }
                        }
                    },
                "localname":  "SellingAndMarketingExpenseMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_SeveranceCosts1":  {
                "auth_ref":  [
                    "r108",
                    "r269",
                    "r274",
                    "r279"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan.  Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.",
                            "label":  "Severance Costs",
                            "terseLabel":  "Severance payments and termination benefits"
                            }
                        }
                    },
                "localname":  "SeveranceCosts1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURINGDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ShareBasedCompensation":  {
                "auth_ref":  [
                    "r107"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of noncash expense for share-based payment arrangement.",
                            "label":  "Share-based Payment Arrangement, Noncash Expense",
                            "terseLabel":  "Stock-based compensation expense"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensation",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod":  {
                "auth_ref":  [
                    "r375"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period",
                            "negatedTerseLabel":  "Number of shares, forfeited (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue":  {
                "auth_ref":  [
                    "r380"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value",
                            "terseLabel":  "Weighted average grant date fair value, forfeited (in usd per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod":  {
                "auth_ref":  [
                    "r378"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period",
                            "verboseLabel":  "Number of shares, granted (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue":  {
                "auth_ref":  [
                    "r378"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value",
                            "terseLabel":  "Weighted average grant date fair value, granted (in usd per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber":  {
                "auth_ref":  [
                    "r377"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number",
                            "periodEndLabel":  "Number of shares, unvested Shares at period end (in share)",
                            "periodStartLabel":  "Number of shares, unvested Shares at beginning of period (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]",
                            "terseLabel":  "Number\u00a0of\u00a0Shares"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue":  {
                "auth_ref":  [
                    "r377"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement.  Excludes share and unit options.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value",
                            "periodEndLabel":  "Weighted average grant date fair value, unvested shares at period end (in usd per share)",
                            "periodStartLabel":  "Weighted average grant date fair value, unvested shares at beginning of period (in usd per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]",
                            "terseLabel":  "Weighted- Average\u00a0Grant\u00a0Date Fair Value"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod":  {
                "auth_ref":  [
                    "r379"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period",
                            "negatedTerseLabel":  "Number of shares, vested (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue":  {
                "auth_ref":  [
                    "r382"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value",
                            "terseLabel":  "Fair value of restricted stock units vested"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue":  {
                "auth_ref":  [
                    "r379"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value",
                            "terseLabel":  "Weighted average grant date fair value, vested (in usd per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate":  {
                "auth_ref":  [
                    "r388"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate",
                            "terseLabel":  "Dividend yield"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSStockOptionPricingModelDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period.  Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean.  The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period.  That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum",
                            "terseLabel":  "Expected volatility, maximum"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSStockOptionPricingModelDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period.  Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean.  The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period.  That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum",
                            "terseLabel":  "Expected volatility, minimum"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSStockOptionPricingModelDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum",
                            "terseLabel":  "Risk-free interest rate, maximum"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSStockOptionPricingModelDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum",
                            "terseLabel":  "Risk-free interest rate, minimum"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSStockOptionPricingModelDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award [Line Items]",
                            "terseLabel":  "Share-based Compensation Arrangement by Share-based Payment Award [Line Items]"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSStockOptionPricingModelDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant":  {
                "auth_ref":  [
                    "r394"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant",
                            "terseLabel":  "Number of shares issuable under plan (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]",
                            "terseLabel":  "Stock Options, Additional Disclosures"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber":  {
                "auth_ref":  [
                    "r373"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number",
                            "terseLabel":  "Exercisable (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice":  {
                "auth_ref":  [
                    "r373"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price",
                            "terseLabel":  "Weighted average exercise price, exercisable (in usd per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue":  {
                "auth_ref":  [
                    "r382"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value",
                            "terseLabel":  "Total intrinsic value of options exercised"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod":  {
                "auth_ref":  [
                    "r375"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period",
                            "negatedLabel":  "Forfeited (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Gross number of share options (or share units) granted during the period.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross",
                            "terseLabel":  "Stock options granted (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue":  {
                "auth_ref":  [
                    "r394"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value",
                            "terseLabel":  "Aggregate intrinsic value, outstanding"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber":  {
                "auth_ref":  [
                    "r372",
                    "r394"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Number of options outstanding, including both vested and non-vested options.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number",
                            "periodEndLabel":  "Shares outstanding, period end (in shares)",
                            "periodStartLabel":  "Shares outstanding, beginning of period (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]",
                            "terseLabel":  "Stock Options Outstanding, Shares"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice":  {
                "auth_ref":  [
                    "r371"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price",
                            "periodEndLabel":  "Weighted average exercise price, outstanding, period end (in usd per share)",
                            "periodStartLabel":  "Weighted average exercise price, outstanding, beginning of period (in usd per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]",
                            "terseLabel":  "Stock Options Outstanding, Weighted Average Exercise Price"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]",
                            "terseLabel":  "Stock Options Vested and Expected to Vest"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue":  {
                "auth_ref":  [
                    "r385"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options.  Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value",
                            "terseLabel":  "Aggregate intrinsic value, vested and expected to vest"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber":  {
                "auth_ref":  [
                    "r385"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan.  Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number",
                            "terseLabel":  "Shares vested and expected to vest (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice":  {
                "auth_ref":  [
                    "r385"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest exercisable or convertible options.  Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price",
                            "terseLabel":  "Weighted average exercise price, vested and expected (in usd per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain":  {
                "auth_ref":  [
                    "r363",
                    "r367"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Award under share-based payment arrangement.",
                            "label":  "Award Type [Domain]",
                            "terseLabel":  "Award Type [Domain]"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSRestrictedStockandPerformanceBasedStockUnitsDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSStockOptionPricingModelDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Weighted average price at which option holders acquired shares when converting their stock options into shares.",
                            "label":  "Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price",
                            "terseLabel":  "Weighted average exercise price, exercised (in usd per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.",
                            "label":  "Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price",
                            "terseLabel":  "Weighted average exercise price, forfeited (in usd per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy":  {
                "auth_ref":  [
                    "r117",
                    "r365",
                    "r368"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for award under share-based payment arrangement.  Includes, but is not limited to, methodology and assumption used in measuring cost.",
                            "label":  "Share-based Payment Arrangement [Policy Text Block]",
                            "terseLabel":  "Stock-Based Compensation"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationOptionAndIncentivePlansPolicy",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_SharePrice":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Price of a single share of a number of saleable stocks of a company.",
                            "label":  "Share Price",
                            "terseLabel":  "Closing stock price (usd per share)"
                            }
                        }
                    },
                "localname":  "SharePrice",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1":  {
                "auth_ref":  [
                    "r390"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of cost expensed and capitalized for award under share-based payment arrangement.",
                            "label":  "Share-based Payment Arrangement, Expensed and Capitalized, Amount",
                            "terseLabel":  "Share based compensation expense including capitalized amount"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSScheduleofStockBasedCompensationExpenseDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod":  {
                "auth_ref":  [
                    "r366"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period",
                            "terseLabel":  "Award expiration period"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1":  {
                "auth_ref":  [
                    "r387",
                    "r399"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term",
                            "terseLabel":  "Expected term (in years)"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSStockOptionPricingModelDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1":  {
                "auth_ref":  [
                    "r394"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value",
                            "terseLabel":  "Aggregate intrinsic value, exercisable"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1":  {
                "auth_ref":  [
                    "r394"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term",
                            "terseLabel":  "Weighted average remaining contractual term, exercisable"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2":  {
                "auth_ref":  [
                    "r384"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term",
                            "terseLabel":  "Weighted average remaining contractual term, outstanding"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1":  {
                "auth_ref":  [
                    "r385"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Weighted average remaining contractual term for fully vested and expected to vest exercisable or convertible options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.  Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term",
                            "terseLabel":  "Weighted average remaining contractual term, vested and expected to vest"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1":  {
                "auth_ref":  [
                    "r369"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Fair value of options vested.  Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value",
                            "terseLabel":  "Total grant date fair value of stock options vested"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_SharesOutstanding":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Number of shares issued which are neither cancelled nor held in the treasury.",
                            "label":  "Shares, Outstanding",
                            "periodEndLabel":  "Ending balance (in shares)",
                            "periodStartLabel":  "Beginning balance (in shares)"
                            }
                        }
                    },
                "localname":  "SharesOutstanding",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShortTermInvestments":  {
                "auth_ref":  [
                    "r15",
                    "r608",
                    "r609",
                    "r628"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_AssetsCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.",
                            "label":  "Short-term Investments",
                            "terseLabel":  "Short-term investments"
                            }
                        }
                    },
                "localname":  "ShortTermInvestments",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ShortTermInvestmentsMember":  {
                "auth_ref":  [
                    "r654",
                    "r655",
                    "r656",
                    "r657"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Investments which are not otherwise included in another category or item that the entity has the intent to sell or dispose of within one year from the date of the balance sheet.",
                            "label":  "Short-term Investments [Member]",
                            "terseLabel":  "Short-term investments:"
                            }
                        }
                    },
                "localname":  "ShortTermInvestmentsMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_SignificantAccountingPoliciesTextBlock":  {
                "auth_ref":  [
                    "r128"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for all significant accounting policies of the reporting entity.",
                            "label":  "Significant Accounting Policies [Text Block]",
                            "terseLabel":  "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES"
                            }
                        }
                    },
                "localname":  "SignificantAccountingPoliciesTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIES"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_StatementClassOfStockAxis":  {
                "auth_ref":  [
                    "r21",
                    "r22",
                    "r23",
                    "r119",
                    "r121",
                    "r142",
                    "r143",
                    "r144",
                    "r146",
                    "r148",
                    "r154",
                    "r155",
                    "r156",
                    "r223",
                    "r305",
                    "r519"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by the different classes of stock of the entity.",
                            "label":  "Class of Stock [Axis]",
                            "terseLabel":  "Class of Stock [Axis]"
                            }
                        }
                    },
                "localname":  "StatementClassOfStockAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREAntidilutiveSharesExcludedFromCalculationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StatementEquityComponentsAxis":  {
                "auth_ref":  [
                    "r50",
                    "r129",
                    "r130",
                    "r131",
                    "r134",
                    "r139",
                    "r141",
                    "r153",
                    "r226",
                    "r305",
                    "r311",
                    "r395",
                    "r396",
                    "r397",
                    "r439",
                    "r440",
                    "r525",
                    "r526",
                    "r527",
                    "r528",
                    "r529",
                    "r531",
                    "r646",
                    "r647",
                    "r648"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by component of equity.",
                            "label":  "Equity Components [Axis]",
                            "terseLabel":  "Equity Components [Axis]"
                            }
                        }
                    },
                "localname":  "StatementEquityComponentsAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StatementLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Line items represent financial concepts included in a table.  These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
                            "label":  "Statement [Line Items]",
                            "terseLabel":  "Statement [Line Items]"
                            }
                        }
                    },
                "localname":  "StatementLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StatementOfCashFlowsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Statement of Cash Flows [Abstract]",
                            "terseLabel":  "Statement of Cash Flows [Abstract]"
                            }
                        }
                    },
                "localname":  "StatementOfCashFlowsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StatementOfFinancialPositionAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Statement of Financial Position [Abstract]",
                            "terseLabel":  "Statement of Financial Position [Abstract]"
                            }
                        }
                    },
                "localname":  "StatementOfFinancialPositionAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Statement of Comprehensive Income [Abstract]",
                            "terseLabel":  "Statement of Comprehensive Income [Abstract]"
                            }
                        }
                    },
                "localname":  "StatementOfIncomeAndComprehensiveIncomeAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StatementOfStockholdersEquityAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Statement of Stockholders' Equity [Abstract]",
                            "terseLabel":  "Statement of Stockholders' Equity [Abstract]"
                            }
                        }
                    },
                "localname":  "StatementOfStockholdersEquityAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StatementTable":  {
                "auth_ref":  [
                    "r129",
                    "r130",
                    "r131",
                    "r153",
                    "r594"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Schedule reflecting a Statement of Income, Statement of Cash Flows, Statement of Financial Position, Statement of Shareholders' Equity and Other Comprehensive Income, or other statement as needed.",
                            "label":  "Statement [Table]",
                            "terseLabel":  "Statement [Table]"
                            }
                        }
                    },
                "localname":  "StatementTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StockIssued1":  {
                "auth_ref":  [
                    "r113",
                    "r114",
                    "r115"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The fair value of stock issued in noncash financing activities.",
                            "label":  "Stock Issued",
                            "terseLabel":  "Issuance of common stock for partial consideration for acquisition"
                            }
                        }
                    },
                "localname":  "StockIssued1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_StockIssuedDuringPeriodSharesAcquisitions":  {
                "auth_ref":  [
                    "r22",
                    "r23",
                    "r311"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Number of shares of stock issued during the period pursuant to acquisitions.",
                            "label":  "Stock Issued During Period, Shares, Acquisitions",
                            "terseLabel":  "Common stock issued in acquisition (in shares)"
                            }
                        }
                    },
                "localname":  "StockIssuedDuringPeriodSharesAcquisitions",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans":  {
                "auth_ref":  [
                    "r22",
                    "r23",
                    "r305",
                    "r311"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Number of shares issued during the period as a result of an employee stock purchase plan.",
                            "label":  "Stock Issued During Period, Shares, Employee Stock Purchase Plans",
                            "terseLabel":  "Shares issued under employee stock purchase plan (in shares)"
                            }
                        }
                    },
                "localname":  "StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSESPPActivityDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross":  {
                "auth_ref":  [
                    "r305",
                    "r311"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.",
                            "label":  "Stock Issued During Period, Shares, Restricted Stock Award, Gross",
                            "terseLabel":  "Vesting of restricted stock units (in shares)"
                            }
                        }
                    },
                "localname":  "StockIssuedDuringPeriodSharesRestrictedStockAwardGross",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised":  {
                "auth_ref":  [
                    "r22",
                    "r23",
                    "r305",
                    "r311",
                    "r374"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Number of share options (or share units) exercised during the current period.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period",
                            "negatedLabel":  "Exercised (in shares)",
                            "terseLabel":  "Issuance of common stock upon the exercise of options (in shares)"
                            }
                        }
                    },
                "localname":  "StockIssuedDuringPeriodSharesStockOptionsExercised",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSSummaryofStockOptionActivityDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_StockIssuedDuringPeriodValueAcquisitions":  {
                "auth_ref":  [
                    "r50",
                    "r305",
                    "r311"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Value of stock issued pursuant to acquisitions during the period.",
                            "label":  "Stock Issued During Period, Value, Acquisitions",
                            "terseLabel":  "Common stock issued in acquisition"
                            }
                        }
                    },
                "localname":  "StockIssuedDuringPeriodValueAcquisitions",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan":  {
                "auth_ref":  [
                    "r22",
                    "r23",
                    "r305",
                    "r311"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Aggregate change in value for stock issued during the period as a result of employee stock purchase plan.",
                            "label":  "Stock Issued During Period, Value, Employee Stock Purchase Plan",
                            "terseLabel":  "Shares issued under employee stock purchase plan"
                            }
                        }
                    },
                "localname":  "StockIssuedDuringPeriodValueEmployeeStockPurchasePlan",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSESPPActivityDetails",
                    "http://www.cornerstoneondemand.com/role/STOCKBASEDAWARDSNarrativeDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised":  {
                "auth_ref":  [
                    "r50",
                    "r305",
                    "r311"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Value of stock issued as a result of the exercise of stock options.",
                            "label":  "Stock Issued During Period, Value, Stock Options Exercised",
                            "terseLabel":  "Issuance of common stock upon the exercise of options"
                            }
                        }
                    },
                "localname":  "StockIssuedDuringPeriodValueStockOptionsExercised",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_StockRepurchaseProgramAuthorizedAmount1":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of stock repurchase plan authorized.",
                            "label":  "Stock Repurchase Program, Authorized Amount",
                            "terseLabel":  "Share repurchase program, shares authorized to repurchase"
                            }
                        }
                    },
                "localname":  "StockRepurchaseProgramAuthorizedAmount1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount remaining of a stock repurchase plan authorized.",
                            "label":  "Stock Repurchase Program, Remaining Authorized Repurchase Amount",
                            "terseLabel":  "Amount available for repurchase"
                            }
                        }
                    },
                "localname":  "StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_StockRepurchasedDuringPeriodShares":  {
                "auth_ref":  [
                    "r22",
                    "r23",
                    "r305",
                    "r311"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Number of shares that have been repurchased during the period and have not been retired and are not held in treasury.  Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore.  This element is used when state law does not recognize treasury stock.",
                            "label":  "Stock Repurchased During Period, Shares",
                            "negatedTerseLabel":  "Repurchase of common stock (in shares)",
                            "terseLabel":  "Common stock repurchased (in shares)"
                            }
                        }
                    },
                "localname":  "StockRepurchasedDuringPeriodShares",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYShareRepurchaseActivityDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_StockRepurchasedDuringPeriodValue":  {
                "auth_ref":  [
                    "r22",
                    "r23",
                    "r305",
                    "r311"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury.  Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore.  This element is used when state law does not recognize treasury stock.",
                            "label":  "Stock Repurchased During Period, Value",
                            "negatedTerseLabel":  "Repurchase of common stock",
                            "terseLabel":  "Total cost of repurchased shares"
                            }
                        }
                    },
                "localname":  "StockRepurchasedDuringPeriodValue",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYShareRepurchaseActivityDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_StockholdersEquity":  {
                "auth_ref":  [
                    "r23",
                    "r27",
                    "r28",
                    "r121",
                    "r203",
                    "r223",
                    "r519"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_LiabilitiesAndStockholdersEquity",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent.  The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest).  This excludes temporary equity and is sometimes called permanent equity.",
                            "label":  "Stockholders' Equity Attributable to Parent",
                            "periodEndLabel":  "Ending balance",
                            "periodStartLabel":  "Beginning balance",
                            "totalLabel":  "Total stockholders\u2019 equity"
                            }
                        }
                    },
                "localname":  "StockholdersEquity",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS",
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_StockholdersEquityAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Stockholders' Equity Attributable to Parent [Abstract]",
                            "terseLabel":  "Stockholders\u2019 equity:"
                            }
                        }
                    },
                "localname":  "StockholdersEquityAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDBALANCESHEETS"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StockholdersEquityNoteDisclosureTextBlock":  {
                "auth_ref":  [
                    "r120",
                    "r311",
                    "r312"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income.  Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.",
                            "label":  "Stockholders' Equity Note Disclosure [Text Block]",
                            "terseLabel":  "STOCKHOLDERS\u2019 EQUITY"
                            }
                        }
                    },
                "localname":  "StockholdersEquityNoteDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITY"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_SubleaseIncome":  {
                "auth_ref":  [
                    "r545",
                    "r552"
                    ],
                "calculation":  {
                    "http://www.cornerstoneondemand.com/role/LEASESComponentsofLeaseExpenseDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_LeaseCost",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of sublease income excluding finance and operating lease expense.",
                            "label":  "Sublease Income",
                            "negatedTerseLabel":  "Sublease Income"
                            }
                        }
                    },
                "localname":  "SubleaseIncome",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/LEASESComponentsofLeaseExpenseDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_SubsequentEventLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Detail information of subsequent event by type.  User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.",
                            "label":  "Subsequent Event [Line Items]",
                            "terseLabel":  "Subsequent Event [Line Items]"
                            }
                        }
                    },
                "localname":  "SubsequentEventLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_SubsequentEventMember":  {
                "auth_ref":  [
                    "r532",
                    "r559"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Identifies event that occurred after the balance sheet date but before financial statements are issued or available to be issued.",
                            "label":  "Subsequent Event [Member]",
                            "terseLabel":  "Subsequent Event"
                            }
                        }
                    },
                "localname":  "SubsequentEventMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_SubsequentEventTable":  {
                "auth_ref":  [
                    "r532",
                    "r559"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Discloses pertinent information about one or more significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued.",
                            "label":  "Subsequent Event [Table]",
                            "terseLabel":  "Subsequent Event [Table]"
                            }
                        }
                    },
                "localname":  "SubsequentEventTable",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_SubsequentEventTypeAxis":  {
                "auth_ref":  [
                    "r532",
                    "r559"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by event that occurred after the balance sheet date but before financial statements are issued or available to be issued.",
                            "label":  "Subsequent Event Type [Axis]",
                            "terseLabel":  "Subsequent Event Type [Axis]"
                            }
                        }
                    },
                "localname":  "SubsequentEventTypeAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_SubsequentEventTypeDomain":  {
                "auth_ref":  [
                    "r532",
                    "r559"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Event that occurred after the balance sheet date but before financial statements are issued or available to be issued.",
                            "label":  "Subsequent Event Type [Domain]",
                            "terseLabel":  "Subsequent Event Type [Domain]"
                            }
                        }
                    },
                "localname":  "SubsequentEventTypeDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/STOCKHOLDERSEQUITYDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_SupplementalBalanceSheetDisclosuresTextBlock":  {
                "auth_ref":  [
                    "r55"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity.",
                            "label":  "Supplemental Balance Sheet Disclosures [Text Block]",
                            "terseLabel":  "OTHER BALANCE SHEET AMOUNTS"
                            }
                        }
                    },
                "localname":  "SupplementalBalanceSheetDisclosuresTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/OTHERBALANCESHEETAMOUNTS"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_SupplementalCashFlowInformationAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Supplemental Cash Flow Information [Abstract]",
                            "terseLabel":  "Supplemental cash flow data"
                            }
                        }
                    },
                "localname":  "SupplementalCashFlowInformationAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_TechnologyBasedIntangibleAssetsMember":  {
                "auth_ref":  [
                    "r466"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Technology-based intangible assets, including, but not limited to, patented technology, unpatented technology, and developed technology rights.",
                            "label":  "Technology-Based Intangible Assets [Member]",
                            "terseLabel":  "Developed technology"
                            }
                        }
                    },
                "localname":  "TechnologyBasedIntangibleAssetsMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAdditionalInformationDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSAllocationofPurchasePriceDetails",
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_TrademarksAndTradeNamesMember":  {
                "auth_ref":  [
                    "r467"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Rights acquired through registration of a trademark to gain or protect exclusive use of a business name, symbol or other device or style, or rights either acquired through registration of a business name to gain or protect exclusive use thereof.",
                            "label":  "Trademarks and Trade Names [Member]",
                            "terseLabel":  "Trade names, trademarks, and domain names"
                            }
                        }
                    },
                "localname":  "TrademarksAndTradeNamesMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/BUSINESSCOMBINATIONSIdentifiableIntangibleAssetsDetails",
                    "http://www.cornerstoneondemand.com/role/INTANGIBLEASSETSANDGOODWILLGrossCarryingAmountandAccumulatedAmortizationofFinitelivedIntangibleAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain":  {
                "auth_ref":  [
                    "r212",
                    "r213",
                    "r560",
                    "r561",
                    "r562",
                    "r563",
                    "r564",
                    "r565",
                    "r566",
                    "r567",
                    "r568",
                    "r569",
                    "r570",
                    "r571",
                    "r572",
                    "r573",
                    "r574",
                    "r575",
                    "r576",
                    "r577",
                    "r578",
                    "r579",
                    "r580",
                    "r581",
                    "r582",
                    "r583",
                    "r584",
                    "r585",
                    "r586",
                    "r587",
                    "r588",
                    "r589"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Instrument or contract that imposes a contractual obligation to deliver cash or another financial instrument or to exchange other financial instruments on potentially unfavorable terms and conveys a contractual right to receive cash or another financial instrument or to exchange other financial instruments on potentially favorable terms.",
                            "label":  "Financial Instruments [Domain]",
                            "terseLabel":  "Financial Instruments [Domain]"
                            }
                        }
                    },
                "localname":  "TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_TypeOfRestructuringDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Identification of the types of restructuring costs.",
                            "label":  "Type of Restructuring [Domain]",
                            "terseLabel":  "Type of Restructuring [Domain]"
                            }
                        }
                    },
                "localname":  "TypeOfRestructuringDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/RESTRUCTURINGDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_USTreasurySecuritiesMember":  {
                "auth_ref":  [
                    "r339",
                    "r353",
                    "r616"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "This category includes information about debt securities issued by the United States Department of the Treasury and backed by the United States government.  Such securities primarily consist of treasury bills (short-term maturities - one year or less), treasury notes (intermediate term maturities - two to ten years), and treasury bonds (long-term maturities - ten to thirty years).",
                            "label":  "US Treasury Securities [Member]",
                            "terseLabel":  "US treasury securities"
                            }
                        }
                    },
                "localname":  "USTreasurySecuritiesMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CASHANDINVESTMENTSScheduleofCashCashEquivalentsandInvestmentsDetails",
                    "http://www.cornerstoneondemand.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSSummaryofAssetandLiabilitiesMeasuredatFairValueDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_UndistributedEarningsOfForeignSubsidiaries":  {
                "auth_ref":  [
                    "r407",
                    "r451",
                    "r624",
                    "r651"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.",
                            "label":  "Undistributed Earnings of Foreign Subsidiaries",
                            "terseLabel":  "Undistributed foreign earnings"
                            }
                        }
                    },
                "localname":  "UndistributedEarningsOfForeignSubsidiaries",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESAdditionalInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UnrecognizedTaxBenefits":  {
                "auth_ref":  [
                    "r408",
                    "r418"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of unrecognized tax benefits.",
                            "label":  "Unrecognized Tax Benefits",
                            "periodEndLabel":  "Unrecognized tax benefit, ending balance",
                            "periodStartLabel":  "Unrecognized tax benefit, beginning balance"
                            }
                        }
                    },
                "localname":  "UnrecognizedTaxBenefits",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESReconciliationofUnrecognizedTaxBenefitsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions":  {
                "auth_ref":  [
                    "r419"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.",
                            "label":  "Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions",
                            "negatedTerseLabel":  "Decreases for tax positions related to the prior year"
                            }
                        }
                    },
                "localname":  "UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESReconciliationofUnrecognizedTaxBenefitsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of increase in unrecognized tax benefits resulting from acquisitions.",
                            "label":  "Unrecognized Tax Benefits, Increase Resulting from Acquisition",
                            "terseLabel":  "Additions from acquisitions"
                            }
                        }
                    },
                "localname":  "UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESReconciliationofUnrecognizedTaxBenefitsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions":  {
                "auth_ref":  [
                    "r419"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.",
                            "label":  "Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions",
                            "terseLabel":  "Increases for tax positions related to the prior year"
                            }
                        }
                    },
                "localname":  "UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESReconciliationofUnrecognizedTaxBenefitsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations":  {
                "auth_ref":  [
                    "r420"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.",
                            "label":  "Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations",
                            "negatedTerseLabel":  "Decreases attributable to lapse of statute of limitations"
                            }
                        }
                    },
                "localname":  "UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESReconciliationofUnrecognizedTaxBenefitsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UseOfEstimates":  {
                "auth_ref":  [
                    "r158",
                    "r159",
                    "r161",
                    "r162",
                    "r163",
                    "r164",
                    "r165"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.",
                            "label":  "Use of Estimates, Policy [Policy Text Block]",
                            "terseLabel":  "Use of Estimates"
                            }
                        }
                    },
                "localname":  "UseOfEstimates",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ValuationAllowanceByDeferredTaxAssetAxis":  {
                "auth_ref":  [
                    "r426"
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by type of deferred tax consequences attributable to deductible temporary differences.",
                            "label":  "Valuation Allowance by Deferred Tax Asset [Axis]",
                            "terseLabel":  "Valuation Allowance by Deferred Tax Asset [Axis]"
                            }
                        }
                    },
                "localname":  "ValuationAllowanceByDeferredTaxAssetAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESAdditionalInformationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount":  {
                "auth_ref":  [
                    "r427"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.",
                            "label":  "Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount",
                            "terseLabel":  "Net increase (decrease) to valuation allowance primarily due to additional net operating losses"
                            }
                        }
                    },
                "localname":  "ValuationAllowanceDeferredTaxAssetChangeInAmount",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/INCOMETAXESAdditionalInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_VariableRateAxis":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Information by type of variable rate.",
                            "label":  "Variable Rate [Axis]",
                            "terseLabel":  "Variable Rate [Axis]"
                            }
                        }
                    },
                "localname":  "VariableRateAxis",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_VariableRateDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Interest rate that fluctuates over time as a result of an underlying benchmark interest rate or index.",
                            "label":  "Variable Rate [Domain]",
                            "terseLabel":  "Variable Rate [Domain]"
                            }
                        }
                    },
                "localname":  "VariableRateDomain",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/DEBTAdditionalInformationDetail"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_WarrantMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Security that gives the holder the right to purchase shares of stock in accordance with the terms of the instrument, usually upon payment of a specified amount.",
                            "label":  "Warrant [Member]",
                            "terseLabel":  "Common stock warrants"
                            }
                        }
                    },
                "localname":  "WarrantMember",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREAntidilutiveSharesExcludedFromCalculationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).",
                            "label":  "Weighted Average Number of Shares Outstanding, Basic and Diluted",
                            "terseLabel":  "Weighted average common shares outstanding, basic and diluted (in shares)",
                            "verboseLabel":  "Weighted-average shares of common stock outstanding (in shares)"
                            }
                        }
                    },
                "localname":  "WeightedAverageNumberOfShareOutstandingBasicAndDiluted",
                "nsuri":  "http://fasb.org/us-gaap/2020-01-31",
                "presentation":  [
                    "http://www.cornerstoneondemand.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS",
                    "http://www.cornerstoneondemand.com/role/NETLOSSPERSHAREBasicandDilutedLossPerShareDetails"
                    ],
                "xbrltype":  "sharesItemType"
                }
            },
        "unitCount":  5
        }
    },
"std_ref":  {
    "r0":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "205",
        "URI":  "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721683-107760"
        },
    "r1":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=121566466&loc=d3e6676-107765"
        },
    "r10":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(1))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r100":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585"
        },
    "r101":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "17",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3367-108585"
        },
    "r102":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "17",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(f)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3367-108585"
        },
    "r103":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "24",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3521-108585"
        },
    "r104":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "25",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(e)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3536-108585"
        },
    "r105":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "25",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(f)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3536-108585"
        },
    "r106":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "25",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3536-108585"
        },
    "r107":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "28",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585"
        },
    "r108":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "28",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585"
        },
    "r109":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "28",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585"
        },
    "r11":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(13))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r110":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3044-108585"
        },
    "r111":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121583591&loc=d3e4273-108586"
        },
    "r112":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121583591&loc=d3e4297-108586"
        },
    "r113":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586"
        },
    "r114":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121583591&loc=d3e4313-108586"
        },
    "r115":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586"
        },
    "r116":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121583591&loc=SL98516268-108586"
        },
    "r117":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790"
        },
    "r118":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(e)",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18823-107790"
        },
    "r119":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.4-08(d))",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
        },
    "r12":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(14))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r120":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.4-08(e)(1))",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
        },
    "r121":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.4-08(g)(1)(ii))",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
        },
    "r122":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.4-08(h))",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
        },
    "r123":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.4-08.(e),(f))",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
        },
    "r124":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.4-08.(h)(1)(i))",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
        },
    "r125":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.4-08.(h))",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
        },
    "r126":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.4-08.(n))",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
        },
    "r127":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.12-04(a))",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690"
        },
    "r128":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/topic&trid=2122369"
        },
    "r129":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "23",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=115929471&loc=d3e21914-107793"
        },
    "r13":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(17))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r130":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "24",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=115929471&loc=d3e21930-107793"
        },
    "r131":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=115929471&loc=d3e21711-107793"
        },
    "r132":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=115929471&loc=d3e21728-107793"
        },
    "r133":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)(2)",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794"
        },
    "r134":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)(3)",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794"
        },
    "r135":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "11",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794"
        },
    "r136":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "11",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794"
        },
    "r137":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794"
        },
    "r138":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22595-107794"
        },
    "r139":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22644-107794"
        },
    "r14":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(19))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r140":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22658-107794"
        },
    "r141":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "9",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794"
        },
    "r142":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1252-109256"
        },
    "r143":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1278-109256"
        },
    "r144":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "55",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=121326447&loc=d3e2626-109256"
        },
    "r145":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "60B",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=121326447&loc=SL5780133-109256"
        },
    "r146":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "60B",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=121326447&loc=SL5780133-109256"
        },
    "r147":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1337-109256"
        },
    "r148":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257"
        },
    "r149":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257"
        },
    "r15":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(2))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r150":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257"
        },
    "r151":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537"
        },
    "r152":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/topic&trid=2144383"
        },
    "r153":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "272",
        "URI":  "http://asc.fasb.org/extlink&oid=6828210&loc=d3e70191-108054"
        },
    "r154":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "272",
        "URI":  "http://asc.fasb.org/extlink&oid=6828210&loc=d3e70229-108054"
        },
    "r155":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "272",
        "URI":  "http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055"
        },
    "r156":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "272",
        "URI":  "http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055"
        },
    "r157":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "275",
        "URI":  "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
        },
    "r158":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "275",
        "URI":  "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
        },
    "r159":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "275",
        "URI":  "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
        },
    "r16":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(20))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r160":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "275",
        "URI":  "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
        },
    "r161":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "11",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "275",
        "URI":  "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6161-108592"
        },
    "r162":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "12",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "275",
        "URI":  "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6191-108592"
        },
    "r163":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "275",
        "URI":  "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6061-108592"
        },
    "r164":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "275",
        "URI":  "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6132-108592"
        },
    "r165":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "9",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "275",
        "URI":  "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6143-108592"
        },
    "r166":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "275",
        "URI":  "http://asc.fasb.org/topic&trid=2134479"
        },
    "r167":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8657-108599"
        },
    "r168":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "18",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599"
        },
    "r169":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "21",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599"
        },
    "r17":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(22))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r170":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "21",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599"
        },
    "r171":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "22",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599"
        },
    "r172":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "22",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599"
        },
    "r173":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "22",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599"
        },
    "r174":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "22",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(e)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599"
        },
    "r175":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "22",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(h)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599"
        },
    "r176":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "22",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599"
        },
    "r177":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "25",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8813-108599"
        },
    "r178":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "25",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8813-108599"
        },
    "r179":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "26",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8844-108599"
        },
    "r18":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(24))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r180":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "30",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599"
        },
    "r181":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "30",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599"
        },
    "r182":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "30",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599"
        },
    "r183":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "30",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599"
        },
    "r184":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "30",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599"
        },
    "r185":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "31",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8924-108599"
        },
    "r186":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "32",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599"
        },
    "r187":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "32",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599"
        },
    "r188":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "32",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599"
        },
    "r189":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "32",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599"
        },
    "r19":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(26)(a))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r190":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "32",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(e)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599"
        },
    "r191":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "32",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(f)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599"
        },
    "r192":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "34",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8981-108599"
        },
    "r193":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "40",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599"
        },
    "r194":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "41",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599"
        },
    "r195":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "41",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599"
        },
    "r196":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "41",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599"
        },
    "r197":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "42",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599"
        },
    "r198":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/topic&trid=2134510"
        },
    "r199":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "310",
        "URI":  "http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522"
        },
    "r2":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=121566466&loc=d3e6676-107765"
        },
    "r20":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(26)(b))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r200":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "9",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "310",
        "URI":  "http://asc.fasb.org/extlink&oid=121593590&loc=d3e4531-111522"
        },
    "r201":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "310",
        "URI":  "http://asc.fasb.org/extlink&oid=121611835&loc=d3e5074-111524"
        },
    "r202":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "9",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "310",
        "URI":  "http://asc.fasb.org/extlink&oid=121611835&loc=d3e5144-111524"
        },
    "r203":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 4.E)",
        "Topic":  "310",
        "URI":  "http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707"
        },
    "r204":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "320",
        "URI":  "http://asc.fasb.org/extlink&oid=121553693&loc=d3e26610-111562"
        },
    "r205":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "11",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "320",
        "URI":  "http://asc.fasb.org/extlink&oid=121553693&loc=d3e26853-111562"
        },
    "r206":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "320",
        "URI":  "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563"
        },
    "r207":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(aa)",
        "Topic":  "320",
        "URI":  "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563"
        },
    "r208":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "320",
        "URI":  "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563"
        },
    "r209":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "320",
        "URI":  "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563"
        },
    "r21":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(27))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r210":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "320",
        "URI":  "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563"
        },
    "r211":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "320",
        "URI":  "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27198-111563"
        },
    "r212":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "320",
        "URI":  "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27232-111563"
        },
    "r213":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "320",
        "URI":  "http://asc.fasb.org/extlink&oid=121645371&loc=SL120269820-111563"
        },
    "r214":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "320",
        "URI":  "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27290-111563"
        },
    "r215":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "320",
        "URI":  "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27337-111563"
        },
    "r216":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "320",
        "URI":  "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27340-111563"
        },
    "r217":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "9",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)-(d)",
        "Topic":  "320",
        "URI":  "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27357-111563"
        },
    "r218":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "320",
        "URI":  "http://asc.fasb.org/topic&trid=2196928"
        },
    "r219":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "321",
        "URI":  "http://asc.fasb.org/extlink&oid=120269885&loc=SL75117539-209714"
        },
    "r22":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(28))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r220":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "321",
        "URI":  "http://asc.fasb.org/topic&trid=75115024"
        },
    "r221":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "323",
        "URI":  "http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570"
        },
    "r222":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)(2)",
        "Topic":  "323",
        "URI":  "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571"
        },
    "r223":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "323",
        "URI":  "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571"
        },
    "r224":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "323",
        "URI":  "http://asc.fasb.org/topic&trid=2196965"
        },
    "r225":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "325",
        "URI":  "http://asc.fasb.org/topic&trid=2197064"
        },
    "r226":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "65",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437"
        },
    "r227":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121599878&loc=SL82895884-210446"
        },
    "r228":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "11",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919244-210447"
        },
    "r229":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447"
        },
    "r23":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(29))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r230":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447"
        },
    "r231":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(d)",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447"
        },
    "r232":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(f)",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447"
        },
    "r233":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447"
        },
    "r234":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919253-210447"
        },
    "r235":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "16",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919258-210447"
        },
    "r236":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919230-210447"
        },
    "r237":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121558606&loc=SL82898722-210454"
        },
    "r238":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121582814&loc=SL82922888-210455"
        },
    "r239":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121582814&loc=SL82922895-210455"
        },
    "r24":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(3))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r240":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "9",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121582814&loc=SL82922900-210455"
        },
    "r241":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "30",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456"
        },
    "r242":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266"
        },
    "r243":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975"
        },
    "r244":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267"
        },
    "r245":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(f)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267"
        },
    "r246":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(g)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267"
        },
    "r247":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267"
        },
    "r248":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267"
        },
    "r249":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274"
        },
    "r25":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(30)(a)(1))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r250":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274"
        },
    "r251":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(a)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275"
        },
    "r252":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(a)(3)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275"
        },
    "r253":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(d)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275"
        },
    "r254":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "((a)(1),(b))",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
        },
    "r255":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(a)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
        },
    "r256":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(a)(1)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
        },
    "r257":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(a)(2)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
        },
    "r258":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(a)(3)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
        },
    "r259":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(d)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
        },
    "r26":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(30)(a)(3))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r260":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(b)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275"
        },
    "r261":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "30",
        "SubTopic":  "40",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=118172244&loc=d3e17916-109280"
        },
    "r262":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "25",
        "SubTopic":  "50",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=16397303&loc=d3e19379-109286"
        },
    "r263":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/topic&trid=2144416"
        },
    "r264":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "360",
        "URI":  "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
        },
    "r265":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "360",
        "URI":  "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
        },
    "r266":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "360",
        "URI":  "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
        },
    "r267":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "360",
        "URI":  "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
        },
    "r268":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "360",
        "URI":  "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230"
        },
    "r269":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "420",
        "URI":  "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869"
        },
    "r27":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(30))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r270":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)(2)",
        "Topic":  "420",
        "URI":  "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869"
        },
    "r271":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "420",
        "URI":  "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869"
        },
    "r272":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "420",
        "URI":  "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869"
        },
    "r273":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB TOPIC 5.P.3)",
        "Topic":  "420",
        "URI":  "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747"
        },
    "r274":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 5.P.3)",
        "Topic":  "420",
        "URI":  "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747"
        },
    "r275":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Topic":  "420",
        "URI":  "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747"
        },
    "r276":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB TOPIC 5.P.4(b))",
        "Topic":  "420",
        "URI":  "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747"
        },
    "r277":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB TOPIC 5.P.4)",
        "Topic":  "420",
        "URI":  "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747"
        },
    "r278":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 5.P.4(b)(2))",
        "Topic":  "420",
        "URI":  "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747"
        },
    "r279":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 5.P.4(b))",
        "Topic":  "420",
        "URI":  "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747"
        },
    "r28":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(31))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r280":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 5.P.4(c))",
        "Topic":  "420",
        "URI":  "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747"
        },
    "r281":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 5.P.4)",
        "Topic":  "420",
        "URI":  "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747"
        },
    "r282":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "420",
        "URI":  "http://asc.fasb.org/topic&trid=2175745"
        },
    "r283":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "440",
        "URI":  "http://asc.fasb.org/extlink&oid=121559207&loc=d3e25336-109308"
        },
    "r284":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "440",
        "URI":  "http://asc.fasb.org/extlink&oid=121559207&loc=d3e25336-109308"
        },
    "r285":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "440",
        "URI":  "http://asc.fasb.org/topic&trid=2144648"
        },
    "r286":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "450",
        "URI":  "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349"
        },
    "r287":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "450",
        "URI":  "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14615-108349"
        },
    "r288":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "450",
        "URI":  "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14394-108349"
        },
    "r289":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "450",
        "URI":  "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349"
        },
    "r29":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(32))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r290":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "450",
        "URI":  "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14453-108349"
        },
    "r291":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "450",
        "URI":  "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14472-108349"
        },
    "r292":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "9",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "450",
        "URI":  "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349"
        },
    "r293":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "450",
        "URI":  "http://asc.fasb.org/topic&trid=2127136"
        },
    "r294":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "460",
        "URI":  "http://asc.fasb.org/extlink&oid=121555522&loc=d3e12021-110248"
        },
    "r295":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "460",
        "URI":  "http://asc.fasb.org/extlink&oid=121555522&loc=d3e12053-110248"
        },
    "r296":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "12A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "470",
        "URI":  "http://asc.fasb.org/extlink&oid=99376301&loc=SL5988623-112600"
        },
    "r297":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "470",
        "URI":  "http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601"
        },
    "r298":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "470",
        "URI":  "http://asc.fasb.org/extlink&oid=6802200&loc=SL6230698-112601"
        },
    "r299":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10",
        "Publisher":  "FASB",
        "Section":  "25",
        "SubTopic":  "20",
        "Topic":  "470",
        "URI":  "http://asc.fasb.org/extlink&oid=109126253&loc=d3e4852-112606"
        },
    "r3":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=121566466&loc=d3e6676-107765"
        },
    "r30":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(4))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r300":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)(1)",
        "Topic":  "470",
        "URI":  "http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870"
        },
    "r301":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "470",
        "URI":  "http://asc.fasb.org/extlink&oid=120520924&loc=SL6031898-161870"
        },
    "r302":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "470",
        "URI":  "http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870"
        },
    "r303":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "470",
        "URI":  "http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870"
        },
    "r304":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "470",
        "URI":  "http://asc.fasb.org/topic&trid=2208564"
        },
    "r305":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "505",
        "URI":  "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644"
        },
    "r306":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "505",
        "URI":  "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644"
        },
    "r307":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "505",
        "URI":  "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644"
        },
    "r308":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "505",
        "URI":  "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644"
        },
    "r309":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "505",
        "URI":  "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644"
        },
    "r31":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(7))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r310":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "505",
        "URI":  "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644"
        },
    "r311":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.3-04)",
        "Topic":  "505",
        "URI":  "http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770"
        },
    "r312":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "505",
        "URI":  "http://asc.fasb.org/topic&trid=2208762"
        },
    "r313":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045"
        },
    "r314":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "12",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045"
        },
    "r315":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "12",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045"
        },
    "r316":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "12",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045"
        },
    "r317":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "12",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045"
        },
    "r318":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "12",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(e)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045"
        },
    "r319":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045"
        },
    "r32":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(8))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r320":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)(1)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045"
        },
    "r321":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)(2)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045"
        },
    "r322":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130558-203045"
        },
    "r323":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "17",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130561-203045"
        },
    "r324":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "18",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130563-203045"
        },
    "r325":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "18",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130563-203045"
        },
    "r326":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "19",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130564-203045"
        },
    "r327":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130566-203045"
        },
    "r328":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130566-203045"
        },
    "r329":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130566-203045"
        },
    "r33":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.1)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r330":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130566-203045"
        },
    "r331":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130543-203045"
        },
    "r332":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045"
        },
    "r333":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045"
        },
    "r334":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "9",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130550-203045"
        },
    "r335":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "91",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121551570&loc=SL49130690-203046-203046"
        },
    "r336":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "91",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=121551570&loc=SL49130690-203046-203046"
        },
    "r337":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/topic&trid=49130388"
        },
    "r338":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(d)(i)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r339":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(d)(ii)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r34":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.12)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r340":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(d)(iii)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r341":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(d)(iv)(01)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r342":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(d)(iv)(02)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r343":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(d)(iv)(02)(A)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r344":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(d)(iv)(02)(B)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r345":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(d)(iv)(02)(C)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r346":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(d)(iv)(03)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r347":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(l)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r348":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(o)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r349":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(p)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r35":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.13(a))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r350":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(q)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r351":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(r)(1)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r352":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(r)(2)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r353":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "17",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "20",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921"
        },
    "r354":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "20",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=21916913&loc=d3e273930-122802"
        },
    "r355":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "60",
        "Subparagraph":  "(c)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=6414203&loc=d3e39689-114964"
        },
    "r356":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "70",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942"
        },
    "r357":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "11",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "80",
        "Subparagraph":  "(a)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947"
        },
    "r358":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "80",
        "Subparagraph":  "(d)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947"
        },
    "r359":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "80",
        "Subparagraph":  "(a)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450673-114947"
        },
    "r36":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.13)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r360":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "80",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948"
        },
    "r361":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/topic&trid=2235017"
        },
    "r362":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "35",
        "SubTopic":  "10",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=121326096&loc=d3e4534-113899"
        },
    "r363":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901"
        },
    "r364":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901"
        },
    "r365":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901"
        },
    "r366":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)(2)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r367":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a),(g)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r368":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b),(f)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r369":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r37":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.14)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r370":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(1)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r371":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(1)(i)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r372":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(1)(i)-(ii)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r373":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(1)(iii)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r374":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(1)(iv)(2)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r375":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(1)(iv)(3)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r376":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(2)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r377":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(2)(i)-(ii)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r378":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(2)(iii)(1)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r379":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(2)(iii)(2)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r38":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.17)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r380":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(2)(iii)(3)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r381":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r382":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)(2)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r383":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(e)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r384":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(e)(1)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r385":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(e)(2)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r386":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(f)(2)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r387":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(f)(2)(i)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r388":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(f)(2)(iii)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r389":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(g)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r39":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.19(a))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r390":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(h)(1)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r391":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(h)(1)(i)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r392":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(h)(1)(ii)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r393":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(i)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r394":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
        },
    "r395":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "65",
        "SubTopic":  "10",
        "Subparagraph":  "(e)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
        },
    "r396":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "65",
        "SubTopic":  "10",
        "Subparagraph":  "(f)(1)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
        },
    "r397":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "65",
        "SubTopic":  "10",
        "Subparagraph":  "(f)(2)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
        },
    "r398":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "65",
        "SubTopic":  "10",
        "Subparagraph":  "(g)(2)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
        },
    "r399":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 14.D.2)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809"
        },
    "r4":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=121566466&loc=d3e6801-107765"
        },
    "r40":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.19(b),22(b))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r400":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 14.F)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809"
        },
    "r401":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "12",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "20",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120383193&loc=d3e11149-113907"
        },
    "r402":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "20",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=120383193&loc=d3e11178-113907"
        },
    "r403":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/topic&trid=2228938"
        },
    "r404":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "35",
        "Subparagraph":  "(a)",
        "Topic":  "720",
        "URI":  "http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848"
        },
    "r405":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "35",
        "Subparagraph":  "(b)",
        "Topic":  "720",
        "URI":  "http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848"
        },
    "r406":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "730",
        "URI":  "http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373"
        },
    "r407":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "25",
        "SubTopic":  "10",
        "Subparagraph":  "(a)(1)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=121573983&loc=d3e28200-109314"
        },
    "r408":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10B",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=120406818&loc=SL37586934-109318"
        },
    "r409":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=120406818&loc=d3e32059-109318"
        },
    "r41":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.19,20)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r410":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "25",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=120406818&loc=d3e32247-109318"
        },
    "r411":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "28",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=120406818&loc=d3e32280-109318"
        },
    "r412":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=120406818&loc=d3e31917-109318"
        },
    "r413":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=120406818&loc=d3e31931-109318"
        },
    "r414":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32672-109319"
        },
    "r415":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "12",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319"
        },
    "r416":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32705-109319"
        },
    "r417":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(e)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319"
        },
    "r418":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
        },
    "r419":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)(2)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
        },
    "r42":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.19-26)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r420":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)(4)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
        },
    "r421":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
        },
    "r422":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "17",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32809-109319"
        },
    "r423":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "19",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319"
        },
    "r424":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
        },
    "r425":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
        },
    "r426":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
        },
    "r427":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
        },
    "r428":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32847-109319"
        },
    "r429":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "21",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32857-109319"
        },
    "r43":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.20)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r430":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319"
        },
    "r431":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319"
        },
    "r432":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319"
        },
    "r433":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319"
        },
    "r434":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "9",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319"
        },
    "r435":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "9",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319"
        },
    "r436":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "9",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319"
        },
    "r437":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "217",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=121610041&loc=d3e36027-109320"
        },
    "r438":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "51",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=121610041&loc=d3e34017-109320"
        },
    "r439":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "65",
        "SubTopic":  "10",
        "Subparagraph":  "(d)(2)",
        "Topic":  "740"
        },
    "r44":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.21)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r440":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "65",
        "SubTopic":  "10",
        "Subparagraph":  "(d)(3)",
        "Topic":  "740"
        },
    "r441":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB TOPIC 6.I.5.Q1)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
        },
    "r442":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB TOPIC 6.I.7)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
        },
    "r443":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 6.I.7)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
        },
    "r444":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 6.I.Fact.1)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
        },
    "r445":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 6.I.Fact.2)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
        },
    "r446":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 6.I.Fact.3)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
        },
    "r447":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 11.C)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330215-122817"
        },
    "r448":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=120385591&loc=d3e38679-109324"
        },
    "r449":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "270",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338"
        },
    "r45":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.22(a)(1))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r450":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(a)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331"
        },
    "r451":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(b)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331"
        },
    "r452":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/topic&trid=2144680"
        },
    "r453":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "05",
        "SubTopic":  "10",
        "Subparagraph":  "(a)-(d)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=6909625&loc=d3e227-128457"
        },
    "r454":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "16",
        "Publisher":  "FASB",
        "Section":  "25",
        "SubTopic":  "10",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=116868678&loc=d3e961-128460"
        },
    "r455":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "23",
        "Publisher":  "FASB",
        "Section":  "25",
        "SubTopic":  "10",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460"
        },
    "r456":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463"
        },
    "r457":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(h)(1)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463"
        },
    "r458":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(h)(2)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463"
        },
    "r459":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(h)(3)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463"
        },
    "r46":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.22(a)(5))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r460":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463"
        },
    "r461":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1486-128463"
        },
    "r462":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "37",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=121600890&loc=d3e2207-128464"
        },
    "r463":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(c)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472"
        },
    "r464":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472"
        },
    "r465":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(c)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=121647850&loc=SL65897772-128472"
        },
    "r466":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "20",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=121598580&loc=d3e5227-128473"
        },
    "r467":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=121598580&loc=d3e5263-128473"
        },
    "r468":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "20",
        "Subparagraph":  "(c)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=121598580&loc=d3e5333-128473"
        },
    "r469":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "30",
        "SubTopic":  "30",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477"
        },
    "r47":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.22)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r470":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "30",
        "SubTopic":  "30",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477"
        },
    "r471":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(b)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479"
        },
    "r472":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(b)(1)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479"
        },
    "r473":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(b)(4)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479"
        },
    "r474":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(d)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479"
        },
    "r475":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/topic&trid=2303972"
        },
    "r476":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "19",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683"
        },
    "r477":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=108774443&loc=SL4569643-111683"
        },
    "r478":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "25",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988"
        },
    "r479":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "25",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988"
        },
    "r48":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.24)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r480":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=109239629&loc=d3e5614-111684"
        },
    "r481":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(3)",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684"
        },
    "r482":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c),(3)",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684"
        },
    "r483":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(bb)",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=121559654&loc=d3e5710-111685"
        },
    "r484":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=121559654&loc=d3e5710-111685"
        },
    "r485":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5579240-113959"
        },
    "r486":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959"
        },
    "r487":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959"
        },
    "r488":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1B",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959"
        },
    "r489":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=d3e41620-113959"
        },
    "r49":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.25)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r490":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=d3e41638-113959"
        },
    "r491":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959"
        },
    "r492":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959"
        },
    "r493":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)(2)",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959"
        },
    "r494":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4B",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(1)",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959"
        },
    "r495":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4B",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959"
        },
    "r496":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4C",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959"
        },
    "r497":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4C",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959"
        },
    "r498":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4C",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959"
        },
    "r499":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4D",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)(1)",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624177-113959"
        },
    "r5":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=121566466&loc=d3e6812-107765"
        },
    "r50":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.29-31)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r500":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4D",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624177-113959"
        },
    "r501":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4D",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624177-113959"
        },
    "r502":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4E",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624181-113959"
        },
    "r503":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4F",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624186-113959"
        },
    "r504":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121590274&loc=d3e41675-113959"
        },
    "r505":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "182",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121582272&loc=SL5629052-113961"
        },
    "r506":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121577181&loc=SL110061190-113977"
        },
    "r507":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "25",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121577467&loc=d3e76258-113986"
        },
    "r508":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(c)",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994"
        },
    "r509":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "820",
        "URI":  "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
        },
    "r51":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.8)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r510":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "820",
        "URI":  "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
        },
    "r511":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(bb)",
        "Topic":  "820",
        "URI":  "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
        },
    "r512":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "820",
        "URI":  "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
        },
    "r513":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "820",
        "URI":  "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258"
        },
    "r514":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "60",
        "SubTopic":  "10",
        "Topic":  "820",
        "URI":  "http://asc.fasb.org/extlink&oid=7493716&loc=d3e21868-110260"
        },
    "r515":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "825",
        "URI":  "http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740"
        },
    "r516":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "825",
        "URI":  "http://asc.fasb.org/extlink&oid=116690757&loc=SL116692626-108610"
        },
    "r517":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "825",
        "URI":  "http://asc.fasb.org/extlink&oid=121572278&loc=d3e13279-108611"
        },
    "r518":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "825",
        "URI":  "http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611"
        },
    "r519":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "28",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(f)",
        "Topic":  "825",
        "URI":  "http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612"
        },
    "r52":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.9)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
        },
    "r520":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "17",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/extlink&oid=120253306&loc=d3e28228-110885"
        },
    "r521":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "35",
        "SubTopic":  "20",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/extlink&oid=121605123&loc=d3e30226-110892"
        },
    "r522":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/extlink&oid=109240200&loc=d3e30690-110894"
        },
    "r523":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895"
        },
    "r524":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "230",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/extlink&oid=98513438&loc=d3e33268-110906"
        },
    "r525":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "17",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32136-110900"
        },
    "r526":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Subparagraph":  "(a)",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
        },
    "r527":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Subparagraph":  "(b)",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
        },
    "r528":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Subparagraph":  "(c)",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
        },
    "r529":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Subparagraph":  "(d)",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
        },
    "r53":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(c)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312"
        },
    "r530":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
        },
    "r531":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901"
        },
    "r532":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/extlink&oid=6450520&loc=d3e32618-110901"
        },
    "r533":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/topic&trid=2175825"
        },
    "r534":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "835",
        "URI":  "http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391"
        },
    "r535":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Topic":  "835",
        "URI":  "http://asc.fasb.org/extlink&oid=119993939&loc=d3e28541-108399"
        },
    "r536":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Topic":  "835",
        "URI":  "http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399"
        },
    "r537":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Topic":  "835",
        "URI":  "http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399"
        },
    "r538":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "30",
        "Topic":  "835",
        "URI":  "http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400"
        },
    "r539":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977"
        },
    "r54":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "20",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313"
        },
    "r540":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977"
        },
    "r541":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Subparagraph":  "(c)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=121603541&loc=SL77918643-209977"
        },
    "r542":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918666-209980"
        },
    "r543":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980"
        },
    "r544":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980"
        },
    "r545":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(e)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980"
        },
    "r546":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(g)(1)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980"
        },
    "r547":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(g)(2)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980"
        },
    "r548":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(g)(3)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980"
        },
    "r549":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(g)(4)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980"
        },
    "r55":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/topic&trid=2122208"
        },
    "r550":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980"
        },
    "r551":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980"
        },
    "r552":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "53",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "20",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971"
        },
    "r553":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "SubTopic":  "20",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/subtopic&trid=77888251"
        },
    "r554":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "850",
        "URI":  "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
        },
    "r555":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "850",
        "URI":  "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
        },
    "r556":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "850",
        "URI":  "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
        },
    "r557":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "850",
        "URI":  "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864"
        },
    "r558":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "850",
        "URI":  "http://asc.fasb.org/topic&trid=2122745"
        },
    "r559":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "855",
        "URI":  "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662"
        },
    "r56":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580"
        },
    "r560":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)(2)(i)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
        },
    "r561":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)(2)(ii)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
        },
    "r562":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)(3)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
        },
    "r563":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(bb)(1)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
        },
    "r564":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(bb)(2)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
        },
    "r565":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(bb)(3)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
        },
    "r566":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(c)(1)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
        },
    "r567":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(c)(2)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
        },
    "r568":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(c)(3)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
        },
    "r569":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)(1)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719"
        },
    "r57":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580"
        },
    "r570":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)(2)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719"
        },
    "r571":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)(3)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719"
        },
    "r572":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(c)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719"
        },
    "r573":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728"
        },
    "r574":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(a)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=109249958&loc=SL34722452-111729"
        },
    "r575":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Subparagraph":  "(a)(1)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746"
        },
    "r576":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Subparagraph":  "(a)(2)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746"
        },
    "r577":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Subparagraph":  "(a)(3)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746"
        },
    "r578":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Subparagraph":  "(a)(4)(i)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746"
        },
    "r579":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Subparagraph":  "(a)(1)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
        },
    "r58":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(e)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580"
        },
    "r580":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Subparagraph":  "(a)(2)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
        },
    "r581":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Subparagraph":  "(a)(3)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
        },
    "r582":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Subparagraph":  "(a)(4)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
        },
    "r583":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Subparagraph":  "(a)(5)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
        },
    "r584":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Subparagraph":  "(a)(6)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
        },
    "r585":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Subparagraph":  "(a)(7)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
        },
    "r586":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Subparagraph":  "(b)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
        },
    "r587":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Subparagraph":  "(e)(1)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
        },
    "r588":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Subparagraph":  "(e)(2)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
        },
    "r589":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Subparagraph":  "(e)(3)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
        },
    "r59":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580"
        },
    "r590":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "910",
        "URI":  "http://asc.fasb.org/extlink&oid=119991564&loc=SL119991595-234733"
        },
    "r591":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "350",
        "Subparagraph":  "(a)",
        "Topic":  "920",
        "URI":  "http://asc.fasb.org/extlink&oid=120155617&loc=SL120155628-234783"
        },
    "r592":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "350",
        "Subparagraph":  "(b)",
        "Topic":  "920",
        "URI":  "http://asc.fasb.org/extlink&oid=120155617&loc=SL120155628-234783"
        },
    "r593":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "350",
        "Subparagraph":  "(a)",
        "Topic":  "920",
        "URI":  "http://asc.fasb.org/extlink&oid=120155617&loc=SL120155638-234783"
        },
    "r594":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 11.L)",
        "Topic":  "924",
        "URI":  "http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856"
        },
    "r595":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "926",
        "URI":  "http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959"
        },
    "r596":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "340",
        "Topic":  "928",
        "URI":  "http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004"
        },
    "r597":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "SubTopic":  "320",
        "Topic":  "940",
        "URI":  "http://asc.fasb.org/subtopic&trid=2176304"
        },
    "r598":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "820",
        "Topic":  "940",
        "URI":  "http://asc.fasb.org/extlink&oid=35710923&loc=d3e45360-110995"
        },
    "r599":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.9-03(1)(a))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
        },
    "r6":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=121566466&loc=d3e6904-107765"
        },
    "r60":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "11",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580"
        },
    "r600":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.9-03(10)(1))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
        },
    "r601":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.9-03(10))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
        },
    "r602":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.9-03(11))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
        },
    "r603":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.9-03(13))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
        },
    "r604":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.9-03(15)(2))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
        },
    "r605":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.9-03(15)(5))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
        },
    "r606":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.9-03(16))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
        },
    "r607":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.9-03(23))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
        },
    "r608":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.9-03(4))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
        },
    "r609":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.9-03(5))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
        },
    "r61":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121641772&loc=d3e681-108580"
        },
    "r610":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.9-03(6))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
        },
    "r611":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.9-03.17)",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
        },
    "r612":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "220",
        "Subparagraph":  "(SX 210.9-04(22))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260"
        },
    "r613":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "220",
        "Subparagraph":  "(SX 210.9-04(23))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260"
        },
    "r614":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "220",
        "Subparagraph":  "(SX 210.9-04(26))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260"
        },
    "r615":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "220",
        "Subparagraph":  "(SX 210.9-04.9)",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260"
        },
    "r616":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "320",
        "Subparagraph":  "(b)",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120252992&loc=d3e62557-112803"
        },
    "r617":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "320",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120252992&loc=d3e62557-112803"
        },
    "r618":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "320",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120252992&loc=d3e62586-112803"
        },
    "r619":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "320",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=120252992&loc=d3e62652-112803"
        },
    "r62":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580"
        },
    "r620":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "SubTopic":  "320",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/subtopic&trid=2209399"
        },
    "r621":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "405",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=116652737&loc=d3e64164-112818"
        },
    "r622":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "470",
        "Subparagraph":  "e",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823"
        },
    "r623":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "470",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823"
        },
    "r624":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "740",
        "Subparagraph":  "(b)",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=6479915&loc=d3e66715-112838"
        },
    "r625":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "825",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=108315417&loc=d3e61044-112788"
        },
    "r626":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.7-03(15)(b)(2))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
        },
    "r627":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.7-03(16))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
        },
    "r628":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.7-03(a)(1)(g))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
        },
    "r629":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.7-03(a)(10))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
        },
    "r63":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121641772&loc=d3e689-108580"
        },
    "r630":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.7-03(a)(12))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
        },
    "r631":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.7-03(a)(15)(a))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
        },
    "r632":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.7-03(a)(23)(a)(4))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
        },
    "r633":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.7-03(a)(25))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
        },
    "r634":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.7-03(a)(8))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
        },
    "r635":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.7-03.(a),19)",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
        },
    "r636":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "220",
        "Subparagraph":  "(SX 210.7-04(18))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263"
        },
    "r637":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "220",
        "Subparagraph":  "(SX 210.7-04(19))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263"
        },
    "r638":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "220",
        "Subparagraph":  "(SX 210.7-04(22))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263"
        },
    "r639":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "220",
        "Subparagraph":  "(SX 210.7-04(3)(b))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263"
        },
    "r64":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "17B",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121641772&loc=SL34724394-108580"
        },
    "r640":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "220",
        "Subparagraph":  "(SX 210.7-04(9))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263"
        },
    "r641":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4H",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "40",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=116884468&loc=SL65671331-158438"
        },
    "r642":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "40",
        "Subparagraph":  "(d)",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=121643868&loc=SL117782755-158439"
        },
    "r643":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13H",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "40",
        "Subparagraph":  "(a)",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=121639165&loc=SL117783719-158441"
        },
    "r644":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13H",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "40",
        "Subparagraph":  "(b)",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=121639165&loc=SL117783719-158441"
        },
    "r645":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "29F",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "40",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=121639165&loc=SL117819544-158441"
        },
    "r646":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "65",
        "SubTopic":  "40",
        "Subparagraph":  "(e)",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
        },
    "r647":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "65",
        "SubTopic":  "40",
        "Subparagraph":  "(f)(1)",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
        },
    "r648":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "65",
        "SubTopic":  "40",
        "Subparagraph":  "(f)(2)",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
        },
    "r649":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "65",
        "SubTopic":  "40",
        "Subparagraph":  "(g)(2)(i)",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
        },
    "r65":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669619-108580"
        },
    "r650":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "65",
        "SubTopic":  "40",
        "Subparagraph":  "(h)(2)",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
        },
    "r651":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "740",
        "Subparagraph":  "(b)",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=6487024&loc=d3e29054-158556"
        },
    "r652":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "210",
        "Topic":  "946",
        "URI":  "http://asc.fasb.org/extlink&oid=118262064&loc=SL116631418-115840"
        },
    "r653":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "21",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "210",
        "Topic":  "946",
        "URI":  "http://asc.fasb.org/extlink&oid=118262064&loc=SL116631419-115840"
        },
    "r654":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "320",
        "Subparagraph":  "(SX 210.12-15(Column A))",
        "Topic":  "946",
        "URI":  "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611379-123010"
        },
    "r655":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "320",
        "Subparagraph":  "(SX 210.12-15(Column B))",
        "Topic":  "946",
        "URI":  "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611379-123010"
        },
    "r656":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "320",
        "Subparagraph":  "(SX 210.12-15(Column C))",
        "Topic":  "946",
        "URI":  "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611379-123010"
        },
    "r657":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "320",
        "Subparagraph":  "(SX 210.12-15(Column D))",
        "Topic":  "946",
        "URI":  "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611379-123010"
        },
    "r658":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "SubTopic":  "320",
        "Topic":  "946",
        "URI":  "http://asc.fasb.org/subtopic&trid=2324412"
        },
    "r659":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "310",
        "Subparagraph":  "(SX 210.12-29(Footnote 4))",
        "Topic":  "948",
        "URI":  "http://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014"
        },
    "r66":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669619-108580"
        },
    "r660":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "210",
        "Topic":  "954",
        "URI":  "http://asc.fasb.org/extlink&oid=120413173&loc=SL116631458-115580"
        },
    "r661":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "740",
        "Topic":  "954",
        "URI":  "http://asc.fasb.org/extlink&oid=6491622&loc=d3e9504-115650"
        },
    "r662":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "360",
        "Subparagraph":  "(d)",
        "Topic":  "958",
        "URI":  "http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916"
        },
    "r663":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "360",
        "Topic":  "958",
        "URI":  "http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916"
        },
    "r664":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "360",
        "Subparagraph":  "(SX 210.12-28(Column B))",
        "Topic":  "970",
        "URI":  "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
        },
    "r665":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "360",
        "Subparagraph":  "(SX 210.12-28(Column C))",
        "Topic":  "970",
        "URI":  "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
        },
    "r666":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "360",
        "Subparagraph":  "(SX 210.12-28(Column D))",
        "Topic":  "970",
        "URI":  "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
        },
    "r667":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "360",
        "Subparagraph":  "(SX 210.12-28(Column E))",
        "Topic":  "970",
        "URI":  "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
        },
    "r668":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "360",
        "Subparagraph":  "(SX 210.12-28(Column F))",
        "Topic":  "970",
        "URI":  "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
        },
    "r669":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "360",
        "Subparagraph":  "(SX 210.12-28(Column G))",
        "Topic":  "970",
        "URI":  "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
        },
    "r67":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669619-108580"
        },
    "r670":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "360",
        "Subparagraph":  "(SX 210.12-28(Column H))",
        "Topic":  "970",
        "URI":  "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
        },
    "r671":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "360",
        "Subparagraph":  "(SX 210.12-28(Column I))",
        "Topic":  "970",
        "URI":  "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
        },
    "r672":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "360",
        "Subparagraph":  "(SX 210.12-28(Footnote 2))",
        "Topic":  "970",
        "URI":  "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
        },
    "r673":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "985",
        "URI":  "http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756"
        },
    "r674":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)(1)",
        "Topic":  "985",
        "URI":  "http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756"
        },
    "r675":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "985",
        "URI":  "http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756"
        },
    "r676":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "985",
        "URI":  "http://asc.fasb.org/extlink&oid=6501960&loc=d3e128487-111756"
        },
    "r677":  {
        "Name":  "Exchange Act",
        "Number":  "240",
        "Publisher":  "SEC",
        "Section":  "12",
        "Subsection":  "b"
        },
    "r678":  {
        "Name":  "Exchange Act",
        "Number":  "240",
        "Publisher":  "SEC",
        "Section":  "12",
        "Subsection":  "b-23"
        },
    "r679":  {
        "Name":  "Exchange Act",
        "Number":  "240",
        "Publisher":  "SEC",
        "Section":  "12",
        "Subsection":  "d1-1"
        },
    "r68":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1B",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669625-108580"
        },
    "r680":  {
        "Name":  "Form 10-K",
        "Number":  "249",
        "Publisher":  "SEC",
        "Section":  "310"
        },
    "r681":  {
        "Name":  "Form 20-F",
        "Number":  "249",
        "Publisher":  "SEC",
        "Section":  "220",
        "Subsection":  "f"
        },
    "r682":  {
        "Name":  "Form 40-F",
        "Number":  "249",
        "Publisher":  "SEC",
        "Section":  "240",
        "Subsection":  "f"
        },
    "r683":  {
        "Name":  "Forms 10-K, 10-Q, 20-F",
        "Number":  "240",
        "Publisher":  "SEC",
        "Section":  "13",
        "Subsection":  "a-1"
        },
    "r684":  {
        "Name":  "Regulation 12B",
        "Number":  "240",
        "Publisher":  "SEC",
        "Section":  "12",
        "Subsection":  "b-2"
        },
    "r685":  {
        "Name":  "Regulation S-T",
        "Number":  "232",
        "Publisher":  "SEC",
        "Section":  "405"
        },
    "r69":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1B",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669625-108580"
        },
    "r7":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=121566466&loc=d3e6911-107765"
        },
    "r70":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121641772&loc=d3e557-108580"
        },
    "r71":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=116657188&loc=SL116659661-227067"
        },
    "r72":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=121640130&loc=d3e1436-108581"
        },
    "r73":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(210.5-03(11))",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r74":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03(20))",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r75":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03(21))",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r76":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03(24))",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r77":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03(4))",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r78":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03(5))",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r79":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03(8))",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r8":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=121566466&loc=d3e6935-107765"
        },
    "r80":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03.1)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r81":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03.1,2)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r82":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03.2(a),(d))",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r83":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03.3)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r84":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03.4)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r85":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03.7)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r86":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03.8)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r87":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03.9)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r88":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "8",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
        },
    "r89":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "11",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3151-108585"
        },
    "r9":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "9",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=121566466&loc=d3e7018-107765"
        },
    "r90":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "12",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585"
        },
    "r91":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "12",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585"
        },
    "r92":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585"
        },
    "r93":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585"
        },
    "r94":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585"
        },
    "r95":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585"
        },
    "r96":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585"
        },
    "r97":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585"
        },
    "r98":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585"
        },
    "r99":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585"
        }
    },
"version":  "2.1"
}

3 Subsequent Filings that Reference this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 9/10/21  Cornerstone OnDemand Inc.         DEFM14A                1:4.2M                                   Broadridge Fin’l So… Inc
 8/30/21  Cornerstone OnDemand Inc.         PREM14A     8/30/21    1:4.2M                                   Broadridge Fin’l So… Inc
 5/06/21  Cornerstone OnDemand Inc.         10-Q        3/31/21   98:11M

19 Previous Filings that this Filing References

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 8/10/20  Cornerstone OnDemand Inc.         10-Q        6/30/20   92:66M
 7/02/20  Cornerstone OnDemand Inc.         S-3ASR      7/02/20    6:276K                                   Donnelley … Solutions/FA
 5/11/20  Cornerstone OnDemand Inc.         8-K:2,5,9   5/11/20   15:765K                                   Donnelley … Solutions/FA
 4/22/20  Cornerstone OnDemand Inc.         8-K:1,2,8,9 4/22/20   12:183K                                   Donnelley … Solutions/FA
 4/17/20  Cornerstone OnDemand Inc.         8-K:5       4/16/20   10:147K                                   Donnelley … Solutions/FA
 2/26/20  Cornerstone OnDemand Inc.         8-K:1,9     2/24/20   13:1.2M                                   Donnelley … Solutions/FA
 8/05/19  Cornerstone OnDemand Inc.         10-Q        6/30/19   79:7.4M
 6/14/19  Cornerstone OnDemand Inc.         8-K:5,9     6/11/19    2:307K                                   Donnelley … Solutions/FA
 8/07/18  Cornerstone OnDemand Inc.         10-Q        6/30/18   66:6.9M
 6/20/18  Cornerstone OnDemand Inc.         8-K:5,9     6/14/18    3:203K                                   Donnelley … Solutions/FA
 2/27/18  Cornerstone OnDemand Inc.         10-K       12/31/17  108:11M
12/08/17  Cornerstone OnDemand Inc.         8-K:1,2,5,912/08/17    3:1.6M                                   Donnelley … Solutions/FA
 8/05/16  Cornerstone OnDemand Inc.         10-Q        6/30/16   61:4.7M
 8/07/13  Cornerstone OnDemand Inc.         10-Q        6/30/13  101:7M
 5/09/13  Cornerstone OnDemand Inc.         10-Q        3/31/13   56:4.3M
 3/06/12  Cornerstone OnDemand Inc.         10-K       12/31/11   40:5.9M                                   Donnelley … Solutions/FA
12/17/10  Cornerstone OnDemand Inc.         S-1/A                  8:4.7M                                   Toppan Merrill/FA
11/09/10  Cornerstone OnDemand Inc.         S-1/A¶                14:6M                                     Toppan Merrill/FA
 9/29/10  Cornerstone OnDemand Inc.         S-1¶        9/28/10   18:6.3M                                   Toppan Merrill/FA

↑Top

Filing Submission 0001401680-21-000011 – Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

Cornerstone OnDemand Inc. – ‘10-K’ for 12/31/20 – ‘JSON’

On: Monday, 2/22/21, at 4:02pm ET · For: 12/31/20 · Accession #: 1401680-21-11 · File #: 1-35098

Annual Report — Form 10-KFiling Table of Contents

‘JSON’ — XBRL Instance as JSON Data — MetaLinks

This File is an XBRL Instance as JavaScript Object Notation (JSON) Data.

3 Subsequent Filings that Reference this Filing

19 Previous Filings that this Filing References

Annual Report — Form 10-K
Filing Table of Contents