SEC Info℠  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Reliance Steel & Aluminum Co – ‘10-K’ for 12/31/19 – ‘JSON’

On:  Thursday, 2/27/20, at 4:25pm ET   ·   For:  12/31/19   ·   Accession #:  1558370-20-1637   ·   File #:  1-13122

Previous ‘10-K’:  ‘10-K’ on 2/27/19 for 12/31/18   ·   Next:  ‘10-K’ on 2/25/21 for 12/31/20   ·   Latest:  ‘10-K’ on 2/29/24 for 12/31/23   ·   5 References:   

Find Words in Filings emoji
 		  in    Show  and   ↓Hints

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

 2/27/20  Reliance Steel & Aluminum Co      10-K       12/31/19  103:13M                                    Toppan Merrill Bridge/FA

Annual Report   —   Form 10-K   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   2.07M 
 2: EX-4.05     Instrument Defining the Rights of Security Holders  HTML     43K 
 3: EX-21       Subsidiaries List                                   HTML     36K 
 4: EX-23.1     Consent of Experts or Counsel                       HTML     32K 
 5: EX-31.1     Certification -- §302 - SOA'02                      HTML     35K 
 6: EX-31.2     Certification -- §302 - SOA'02                      HTML     35K 
 7: EX-32       Certification -- §906 - SOA'02                      HTML     32K 
73: R1          Document and Entity Information                     HTML     88K 
17: R2          Consolidated Balance Sheets                         HTML    147K 
49: R3          Consolidated Balance Sheets (Parenthetical)         HTML     50K 
87: R4          Consolidated Statements of Income                   HTML     97K 
72: R5          Consolidated Statements of Comprehensive Income     HTML     56K 
15: R6          Consolidated Statements of Equity                   HTML     87K 
48: R7          Consolidated Statements of Equity (Parenthetical)   HTML     31K 
85: R8          Consolidated Statements of Cash Flows               HTML    126K 
74: R9          Summary of Significant Accounting Policies          HTML     62K 
39: R10         Acquisitions                                        HTML     63K 
26: R11         Joint Ventures and Noncontrolling Interests         HTML     33K 
57: R12         Inventories                                         HTML     53K 
92: R13         Revenues                                            HTML     50K 
40: R14         Goodwill                                            HTML     40K 
27: R15         Intangible Assets, net                              HTML     82K 
59: R16         Cash Surrender Value of Life Insurance Policies,    HTML     35K 
                net                                                              
93: R17         Debt                                                HTML     66K 
38: R18         Leases                                              HTML     62K 
28: R19         Income Taxes                                        HTML    141K 
78: R20         Stock-Based Compensation Plans                      HTML    111K 
90: R21         Employee Benefits                                   HTML    360K 
55: R22         Equity                                              HTML     53K 
20: R23         Other (Income) Expense, net                         HTML     52K 
79: R24         Commitments and Contingencies                       HTML     35K 
91: R25         Earnings Per Share                                  HTML     56K 
56: R26         Segment Information                                 HTML     70K 
22: R27         Impairment and Restructuring Charges                HTML     48K 
80: R28         Quarterly Financial Information (Unaudited)         HTML     90K 
89: R29         Schedule Ii - Valuation and Qualifying Accounts     HTML     70K 
95: R30         Summary of Significant Accounting Policies          HTML    110K 
                (Policies)                                                       
62: R31         Acquisitions (Tables)                               HTML     54K 
25: R32         Inventories (Tables)                                HTML     55K 
37: R33         Revenues (Tables)                                   HTML     49K 
94: R34         Goodwill (Tables)                                   HTML     40K 
61: R35         Intangible Assets, net (Tables)                     HTML     82K 
24: R36         Debt (Tables)                                       HTML     55K 
36: R37         Leases (Tables)                                     HTML     64K 
96: R38         Income Taxes (Tables)                               HTML    145K 
60: R39         Stock-Based Compensation Plans (Tables)             HTML    106K 
82: R40         Employee Benefits (Tables)                          HTML    368K 
71: R41         Equity (Tables)                                     HTML     46K 
19: R42         Other (Income) Expense, net (Tables)                HTML     51K 
54: R43         Earnings Per Share (Tables)                         HTML     56K 
81: R44         Segment Information (Tables)                        HTML     71K 
70: R45         Impairment and Restructuring Charges (Tables)       HTML     49K 
18: R46         Quarterly Financial Information (Unaudited)         HTML     89K 
                (Tables)                                                         
53: R47         Summary of Significant Accounting Policies -        HTML     34K 
                Business (Details)                                               
83: R48         Summary of Significant Accounting Policies - Fair   HTML     43K 
                Value (Details)                                                  
69: R49         Summary of Significant Accounting Policies -        HTML     39K 
                Goodwill and Other Indefinite-Lived Intangible                   
                Assets (Details)                                                 
63: R50         Summary of Significant Accounting Policies -        HTML     44K 
                Long-Lived Assets (Details)                                      
98: R51         Summary of Significant Accounting Policies -        HTML     44K 
                Revenue Recognition, Share-Based Compensation and                
                Foreign Currencies (Details)                                     
46: R52         Summary of Significant Accounting Policies -        HTML     31K 
                Income Taxes (Details)                                           
34: R53         Summary of Significant Accounting Policies -        HTML     36K 
                Impact of Recently Issued Accounting Standards                   
                (Details)                                                        
64: R54         Acquisitions (Details)                              HTML    140K 
99: R55         Joint Ventures and Noncontrolling Interests         HTML     52K 
                (Details)                                                        
47: R56         Inventories (Details)                               HTML     46K 
35: R57         Revenues (Details)                                  HTML     66K 
65: R58         Goodwill (Details)                                  HTML     46K 
97: R59         Intangible Assets, net (Details)                    HTML     84K 
51: R60         Cash Surrender Value of Life Insurance Policies,    HTML     50K 
                net (Details)                                                    
13: R61         Debt - Summary (Details)                            HTML     47K 
75: R62         Debt - Other (Details)                              HTML    129K 
84: R63         Leases (Details)                                    HTML     88K 
52: R64         Income Taxes - Summary, Reconciliation and Other    HTML    173K 
                (Details)                                                        
14: R65         Income Taxes - Unrecognized Tax Benefits (Details)  HTML     46K 
76: R66         Stock-Based Compensation Plans - Stock Option       HTML     95K 
                Activity (Details)                                               
86: R67         Stock-Based Compensation Plans - Outstanding and    HTML     46K 
                Exercisable Options (Details)                                    
50: R68         Stock-Based Compensation Plans - RSUs (Details)     HTML    108K 
16: R69         Employee Benefits - Defined Contribution Plan       HTML     31K 
                Information (Details)                                            
32: R70         Employee Benefits - Summary of SERPs and Defined    HTML    174K 
                Benefit Plans (Details)                                          
43: R71         Employee Benefits - Defined Benefit Plan            HTML     39K 
                Termination (Details)                                            
102: R72         Employee Benefits - Plan Assets and Investment      HTML     67K  
                Policy (Details)                                                 
67: R73         Employee Benefits - Postretirement Plan and         HTML     61K 
                Summary Information for All Defined Benefit Plans                
                (Details)                                                        
31: R74         Employee Benefits - Supplemental Bonus Plan         HTML     43K 
                (Details)                                                        
42: R75         Equity - Reincorporation, Common Stock (Details)    HTML     36K 
101: R76         Equity - Share Repurchase Plan, Preferred Stock     HTML     58K  
                (Details)                                                        
66: R77         Equity - Accumulated Other Comprehensive Loss       HTML     46K 
                (Details)                                                        
29: R78         Other (Income) Expense, net (Details)               HTML     47K 
45: R79         Commitments and Contingencies - Purchase            HTML     38K 
                Commitments (Details)                                            
33: R80         Commitments and Contingencies - Collective          HTML     46K 
                Bargaining Agreements and Environmental                          
                Contingencies (Details)                                          
44: R81         Earnings Per Share (Details)                        HTML     56K 
103: R82         Segment Information - Summary of sales by product   HTML     45K  
                and service (Details)                                            
68: R83         Segment Information - Geographic Location           HTML     43K 
                (Details)                                                        
30: R84         Impairment and Restructuring Charges (Details)      HTML     47K 
41: R85         Quarterly Financial Information (Unaudited)         HTML     59K 
                (Details)                                                        
100: R86         Schedule Ii - Valuation and Qualifying Accounts     HTML     39K  
                (Details)                                                        
88: XML         IDEA XML File -- Filing Summary                      XML    188K 
58: XML         XBRL Instance -- rs-20191231x10kfac9e5_htm           XML   3.57M 
21: EXCEL       IDEA Workbook of Financial Reports                  XLSX    118K 
 9: EX-101.CAL  XBRL Calculations -- rs-20191231_cal                 XML    281K 
10: EX-101.DEF  XBRL Definitions -- rs-20191231_def                  XML    819K 
11: EX-101.LAB  XBRL Labels -- rs-20191231_lab                       XML   2.14M 
12: EX-101.PRE  XBRL Presentations -- rs-20191231_pre                XML   1.37M 
 8: EX-101.SCH  XBRL Schema -- rs-20191231                           XSD    241K 
77: JSON        XBRL Instance as JSON Data -- MetaLinks              500±   783K 
23: ZIP         XBRL Zipped Folder -- 0001558370-20-001637-xbrl      Zip    444K

‘JSON’   —   XBRL Instance as JSON Data — MetaLinks

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


{
"instance":  {
    "rs-20191231x10kfac9e5.htm":  {
        "axisCustom":  2,
        "axisStandard":  32,
        "contextCount":  323,
        "dts":  {
            "calculationLink":  {
                "local":  [
                    "rs-20191231_cal.xml"
                    ]
                },
            "definitionLink":  {
                "local":  [
                    "rs-20191231_def.xml"
                    ],
                "remote":  [
                    "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-eedm-def-2019-01-31.xml",
                    "http://xbrl.fasb.org/srt/2019/elts/srt-eedm1-def-2019-01-31.xml"
                    ]
                },
            "inline":  {
                "local":  [
                    "rs-20191231x10kfac9e5.htm"
                    ]
                },
            "labelLink":  {
                "local":  [
                    "rs-20191231_lab.xml"
                    ],
                "remote":  [
                    "http://xbrl.fasb.org/srt/2019/elts/srt-doc-2019-01-31.xml",
                    "https://xbrl.sec.gov/dei/2019/dei-doc-2019-01-31.xml",
                    "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-doc-2019-01-31.xml"
                    ]
                },
            "presentationLink":  {
                "local":  [
                    "rs-20191231_pre.xml"
                    ]
                },
            "referenceLink":  {
                "remote":  [
                    "https://xbrl.sec.gov/dei/2019/dei-ref-2019-01-31.xml",
                    "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-ref-2019-01-31.xml",
                    "http://xbrl.fasb.org/srt/2019/elts/srt-ref-2019-01-31.xml"
                    ]
                },
            "schema":  {
                "local":  [
                    "rs-20191231.xsd"
                    ],
                "remote":  [
                    "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://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd",
                    "http://xbrl.fasb.org/us-gaap/2019/elts/us-roles-2019-01-31.xsd",
                    "http://www.xbrl.org/2005/xbrldt-2005.xsd",
                    "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
                    "http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.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/2006/ref-2006-02-27.xsd",
                    "http://xbrl.fasb.org/srt/2019/elts/srt-types-2019-01-31.xsd",
                    "http://xbrl.fasb.org/srt/2019/elts/srt-roles-2019-01-31.xsd",
                    "https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd",
                    "http://xbrl.fasb.org/us-gaap/2019/elts/us-types-2019-01-31.xsd",
                    "https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd",
                    "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd",
                    "http://www.xbrl.org/lrr/role/deprecated-2009-12-16.xsd",
                    "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd",
                    "http://xbrl.fasb.org/us-gaap/2019/elts/us-parts-codification-2019-01-31.xsd"
                    ]
                }
            },
        "elementCount":  823,
        "entityCount":  1,
        "hidden":  {
            "http://fasb.org/us-gaap/2019-01-31":  13,
            "http://www.rsac.com/20191231":  3,
            "http://xbrl.sec.gov/dei/2019-01-31":  6,
            "total":  22
            },
        "keyCustom":  78,
        "keyStandard":  492,
        "memberCustom":  54,
        "memberStandard":  51,
        "nsprefix":  "rs",
        "nsuri":  "http://www.rsac.com/20191231",
        "report":  {
            "R1":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "dei:DocumentType",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "document",
                "isDefault":  "true",
                "longName":  "00090 - Document - Document and Entity Information",
                "role":  "http://www.rsac.com/role/DocumentDocumentAndEntityInformation",
                "shortName":  "Document and Entity Information",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "dei:DocumentType",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R10":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:BusinessCombinationDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "10201 - Disclosure - Acquisitions",
                "role":  "http://www.rsac.com/role/DisclosureAcquisitions",
                "shortName":  "Acquisitions",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:BusinessCombinationDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R11":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "rs:EquityMethodInvestmentsAndMinorityInterestDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "10301 - Disclosure - Joint Ventures and Noncontrolling Interests",
                "role":  "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterests",
                "shortName":  "Joint Ventures and Noncontrolling Interests",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "rs:EquityMethodInvestmentsAndMinorityInterestDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R12":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:InventoryDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "10401 - Disclosure - Inventories",
                "role":  "http://www.rsac.com/role/DisclosureInventories",
                "shortName":  "Inventories",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:InventoryDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R13":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RevenueFromContractWithCustomerTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "10501 - Disclosure - Revenues",
                "role":  "http://www.rsac.com/role/DisclosureRevenues",
                "shortName":  "Revenues",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RevenueFromContractWithCustomerTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R14":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:GoodwillDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "10601 - Disclosure - Goodwill",
                "role":  "http://www.rsac.com/role/DisclosureGoodwill",
                "shortName":  "Goodwill",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:GoodwillDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R15":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:IntangibleAssetsDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "10701 - Disclosure - Intangible Assets, net",
                "role":  "http://www.rsac.com/role/DisclosureIntangibleAssetsNet",
                "shortName":  "Intangible Assets, net",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:IntangibleAssetsDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R16":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:LifeInsuranceCorporateOrBankOwnedTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "10801 - Disclosure - Cash Surrender Value of Life Insurance Policies, net",
                "role":  "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNet",
                "shortName":  "Cash Surrender Value of Life Insurance Policies, net",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:LifeInsuranceCorporateOrBankOwnedTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R17":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DebtDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "10901 - Disclosure - Debt",
                "role":  "http://www.rsac.com/role/DisclosureDebt",
                "shortName":  "Debt",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DebtDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R18":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:LesseeOperatingLeasesTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "11001 - Disclosure - Leases",
                "role":  "http://www.rsac.com/role/DisclosureLeases",
                "shortName":  "Leases",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:LesseeOperatingLeasesTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R19":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:IncomeTaxDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "11101 - Disclosure - Income Taxes",
                "role":  "http://www.rsac.com/role/DisclosureIncomeTaxes",
                "shortName":  "Income Taxes",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:IncomeTaxDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R2":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:CashAndCashEquivalentsAtCarryingValue",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "statement",
                "isDefault":  "false",
                "longName":  "00100 - Statement - CONSOLIDATED BALANCE SHEETS",
                "role":  "http://www.rsac.com/role/StatementConsolidatedBalanceSheets",
                "shortName":  "CONSOLIDATED BALANCE SHEETS",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:CashAndCashEquivalentsAtCarryingValue",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R20":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "11201 - Disclosure - Stock-Based Compensation Plans",
                "role":  "http://www.rsac.com/role/DisclosureStockBasedCompensationPlans",
                "shortName":  "Stock-Based Compensation Plans",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R21":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "rs:PensionAndOtherPostretirementBenefitsDisclosureAndPostemploymentBenefitsDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "11301 - Disclosure - Employee Benefits",
                "role":  "http://www.rsac.com/role/DisclosureEmployeeBenefits",
                "shortName":  "Employee Benefits",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "rs:PensionAndOtherPostretirementBenefitsDisclosureAndPostemploymentBenefitsDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R22":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "11401 - Disclosure - Equity",
                "role":  "http://www.rsac.com/role/DisclosureEquity",
                "shortName":  "Equity",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R23":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "11501 - Disclosure - Other (Income) Expense, net",
                "role":  "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNet",
                "shortName":  "Other (Income) Expense, net",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R24":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "11601 - Disclosure - Commitments and Contingencies",
                "role":  "http://www.rsac.com/role/DisclosureCommitmentsAndContingencies",
                "shortName":  "Commitments and Contingencies",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R25":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:EarningsPerShareTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "11701 - Disclosure - Earnings Per Share",
                "role":  "http://www.rsac.com/role/DisclosureEarningsPerShare",
                "shortName":  "Earnings Per Share",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:EarningsPerShareTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R26":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:SegmentReportingDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "11801 - Disclosure - Segment Information",
                "role":  "http://www.rsac.com/role/DisclosureSegmentInformation",
                "shortName":  "Segment Information",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:SegmentReportingDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R27":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RestructuringImpairmentAndOtherActivitiesDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "11901 - Disclosure - Impairment and Restructuring Charges",
                "role":  "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringCharges",
                "shortName":  "Impairment and Restructuring Charges",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:RestructuringImpairmentAndOtherActivitiesDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R28":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:QuarterlyFinancialInformationTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "12001 - Disclosure - Quarterly Financial Information (Unaudited)",
                "role":  "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnaudited",
                "shortName":  "Quarterly Financial Information (Unaudited)",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:QuarterlyFinancialInformationTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R29":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "12101 - Disclosure - SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS",
                "role":  "http://www.rsac.com/role/DisclosureScheduleIiValuationAndQualifyingAccounts",
                "shortName":  "SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R3":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "statement",
                "isDefault":  "false",
                "longName":  "00105 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)",
                "role":  "http://www.rsac.com/role/StatementConsolidatedBalanceSheetsParenthetical",
                "shortName":  "CONSOLIDATED BALANCE SHEETS (Parenthetical)",
                "subGroupType":  "parenthetical",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R30":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "us-gaap:SignificantAccountingPoliciesTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ConsolidationPolicyTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "20102 - Disclosure - Summary of Significant Accounting Policies (Policies)",
                "role":  "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies",
                "shortName":  "Summary of Significant Accounting Policies (Policies)",
                "subGroupType":  "policies",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "us-gaap:SignificantAccountingPoliciesTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ConsolidationPolicyTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R31":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019_us-gaap_BusinessAcquisitionAxis_rs_FrySteelCompanyMember_fiTFifegBkCBvAklom_QWg",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "30203 - Disclosure - Acquisitions (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureAcquisitionsTables",
                "shortName":  "Acquisitions (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019_us-gaap_BusinessAcquisitionAxis_rs_FrySteelCompanyMember_fiTFifegBkCBvAklom_QWg",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R32":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "us-gaap:InventoryDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfInventoryCurrentTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "30403 - Disclosure - Inventories (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureInventoriesTables",
                "shortName":  "Inventories (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "us-gaap:InventoryDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfInventoryCurrentTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R33":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "us-gaap:RevenueFromContractWithCustomerTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DisaggregationOfRevenueTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "30503 - Disclosure - Revenues (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureRevenuesTables",
                "shortName":  "Revenues (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "us-gaap:RevenueFromContractWithCustomerTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:DisaggregationOfRevenueTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R34":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "us-gaap:GoodwillDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfGoodwillTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "30603 - Disclosure - Goodwill (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureGoodwillTables",
                "shortName":  "Goodwill (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "us-gaap:GoodwillDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfGoodwillTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R35":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "us-gaap:IntangibleAssetsDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "30703 - Disclosure - Intangible Assets, net (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureIntangibleAssetsNetTables",
                "shortName":  "Intangible Assets, net (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "us-gaap:IntangibleAssetsDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R36":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "us-gaap:DebtDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfDebtTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "30903 - Disclosure - Debt (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureDebtTables",
                "shortName":  "Debt (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "us-gaap:DebtDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfDebtTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R37":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "us-gaap:LesseeOperatingLeasesTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:LeaseCostTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "31003 - Disclosure - Leases (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureLeasesTables",
                "shortName":  "Leases (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "us-gaap:LesseeOperatingLeasesTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:LeaseCostTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R38":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "31103 - Disclosure - Income Taxes (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureIncomeTaxesTables",
                "shortName":  "Income Taxes (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R39":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "31203 - Disclosure - Stock-Based Compensation Plans (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansTables",
                "shortName":  "Stock-Based Compensation Plans (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R4":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "statement",
                "isDefault":  "false",
                "longName":  "00200 - Statement - CONSOLIDATED STATEMENTS OF INCOME",
                "role":  "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome",
                "shortName":  "CONSOLIDATED STATEMENTS OF INCOME",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:SellingGeneralAndAdministrativeExpense",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R40":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfExpectedBenefitPaymentsTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "31303 - Disclosure - Employee Benefits (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables",
                "shortName":  "Employee Benefits (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfExpectedBenefitPaymentsTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R41":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "31403 - Disclosure - Equity (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureEquityTables",
                "shortName":  "Equity (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R42":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "31503 - Disclosure - Other (Income) Expense, net (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNetTables",
                "shortName":  "Other (Income) Expense, net (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R43":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "us-gaap:EarningsPerShareTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "31703 - Disclosure - Earnings Per Share (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureEarningsPerShareTables",
                "shortName":  "Earnings Per Share (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "us-gaap:EarningsPerShareTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R44":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "us-gaap:SegmentReportingDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "31803 - Disclosure - Segment Information (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureSegmentInformationTables",
                "shortName":  "Segment Information (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "us-gaap:SegmentReportingDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R45":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "us-gaap:RestructuringImpairmentAndOtherActivitiesDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfRestructuringAndRelatedCostsTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "31903 - Disclosure - Impairment and Restructuring Charges (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesTables",
                "shortName":  "Impairment and Restructuring Charges (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "us-gaap:RestructuringImpairmentAndOtherActivitiesDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfRestructuringAndRelatedCostsTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R46":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "us-gaap:QuarterlyFinancialInformationTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "32003 - Disclosure - Quarterly Financial Information (Unaudited) (Tables)",
                "role":  "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnauditedTables",
                "shortName":  "Quarterly Financial Information (Unaudited) (Tables)",
                "subGroupType":  "tables",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "us-gaap:QuarterlyFinancialInformationTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R47":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "rs:BusinessPolicyTextBlock",
                        "us-gaap:SignificantAccountingPoliciesTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  null,
                    "name":  "rs:NumberOfLocationsInWhichEntityOperatesMinimum",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_item_YyChzk4yEkydve54ljpnkg",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40101 - Disclosure - Summary of Significant Accounting Policies - Business (Details)",
                "role":  "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesBusinessDetails",
                "shortName":  "Summary of Significant Accounting Policies - Business (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "rs:BusinessPolicyTextBlock",
                        "us-gaap:SignificantAccountingPoliciesTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  null,
                    "name":  "rs:NumberOfLocationsInWhichEntityOperatesMinimum",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_item_YyChzk4yEkydve54ljpnkg",
                    "xsiNil":  "false"
                    }
                },
            "R48":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfDebtTableTextBlock",
                        "us-gaap:DebtDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:DebtLongtermAndShorttermCombinedAmount",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40102 - Disclosure - Summary of Significant Accounting Policies - Fair Value (Details)",
                "role":  "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueDetails",
                "shortName":  "Summary of Significant Accounting Policies - Fair Value (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "us-gaap:DebtInstrumentCarryingAmount",
                        "p",
                        "us-gaap:FairValueOfFinancialInstrumentsPolicy",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_us-gaap_LongtermDebtTypeAxis_rs_SeniorUnsecuredNotesPubliclyTradedMember_MumUjKg43kKtcX7zs8x0tw",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:DebtInstrumentCarryingAmount",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R49":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "us-gaap:NumberOfOperatingSegments",
                        "us-gaap:NumberOfOperatingSegments",
                        "p",
                        "us-gaap:GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:NumberOfOperatingSegments",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_segment_K6lrh6PzYU-b77UpvJzZ_g",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40103 - Disclosure - Summary of Significant Accounting Policies - Goodwill and Other Indefinite-Lived Intangible Assets (Details)",
                "role":  "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesGoodwillAndOtherIndefiniteLivedIntangibleAssetsDetails",
                "shortName":  "Summary of Significant Accounting Policies - Goodwill and Other Indefinite-Lived Intangible Assets (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "us-gaap:NumberOfOperatingSegments",
                        "us-gaap:NumberOfOperatingSegments",
                        "p",
                        "us-gaap:GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:NumberOfOperatingSegments",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_segment_K6lrh6PzYU-b77UpvJzZ_g",
                    "xsiNil":  "false"
                    }
                },
            "R5":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:ProfitLoss",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "statement",
                "isDefault":  "false",
                "longName":  "00300 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME",
                "role":  "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome",
                "shortName":  "CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R50":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "ix:continuation",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:TangibleAssetImpairmentCharges",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40104 - Disclosure - Summary of Significant Accounting Policies - Long-Lived Assets (Details)",
                "role":  "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLongLivedAssetsDetails",
                "shortName":  "Summary of Significant Accounting Policies - Long-Lived Assets (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "rs:LongLivedAssetsPolicyTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019_srt_RangeAxis_srt_MaximumMember_us-gaap_PropertyPlantAndEquipmentByTypeAxis_us-gaap_BuildingMember_9k7I1wIhEEeSp4iz6La2-A",
                    "decimals":  null,
                    "lang":  "en-US",
                    "name":  "us-gaap:PropertyPlantAndEquipmentUsefulLife",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R51":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "us-gaap:RevenueFromContractWithCustomerPolicyTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "0",
                    "first":  true,
                    "lang":  null,
                    "name":  "rs:NumberOfPerformanceObligationFromSaleOfMetalProducts",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_item_YyChzk4yEkydve54ljpnkg",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40105 - Disclosure - Summary of Significant Accounting Policies - Revenue Recognition, Share-Based Compensation and Foreign Currencies (Details)",
                "role":  "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionShareBasedCompensationAndForeignCurrenciesDetails",
                "shortName":  "Summary of Significant Accounting Policies - Revenue Recognition, Share-Based Compensation and Foreign Currencies (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "us-gaap:RevenueFromContractWithCustomerPolicyTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "0",
                    "first":  true,
                    "lang":  null,
                    "name":  "rs:NumberOfPerformanceObligationFromSaleOfMetalProducts",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_item_YyChzk4yEkydve54ljpnkg",
                    "xsiNil":  "false"
                    }
                },
            "R52":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_pure_rrGh0nN3TUCWk81LzlGETw",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40106 - Disclosure - Summary of Significant Accounting Policies - Income Taxes (Details)",
                "role":  "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesIncomeTaxesDetails",
                "shortName":  "Summary of Significant Accounting Policies - Income Taxes (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  null
                },
            "R53":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:OperatingLeaseRightOfUseAsset",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40107 - Disclosure - Summary of Significant Accounting Policies - Impact of Recently Issued Accounting Standards (Details)",
                "role":  "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesImpactOfRecentlyIssuedAccountingStandardsDetails",
                "shortName":  "Summary of Significant Accounting Policies - Impact of Recently Issued Accounting Standards (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "ix:continuation",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_1_1_2019_srt_RestatementAxis_srt_RestatementAdjustmentMember_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_us-gaap_AccountingStandardsUpdate201602Member_Y-IGov_ngkC3tNUXbqQ2hg",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:OperatingLeaseRightOfUseAsset",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R54":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:Revenues",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40201 - Disclosure - Acquisitions (Details)",
                "role":  "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                "shortName":  "Acquisitions (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "p",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2018_To_12_31_2018_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_us-gaap_CustomerRelationshipsMember_ud6FLK0ADUaOzLiMhNAvxw",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:FinitelivedIntangibleAssetsAcquired1",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R55":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "rs:EquityMethodInvestmentsAndMinorityInterestDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019_dei_LegalEntityAxis_rs_EagleSteelProductsIncMember_j5sVo7iTqUetkK_VK5myCQ",
                    "decimals":  "2",
                    "first":  true,
                    "lang":  null,
                    "name":  "rs:EquityMethodInvestmentOwnershipSoldPercentage",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_pure_rrGh0nN3TUCWk81LzlGETw",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40301 - Disclosure - Joint Ventures and Noncontrolling Interests (Details)",
                "role":  "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails",
                "shortName":  "Joint Ventures and Noncontrolling Interests (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "rs:EquityMethodInvestmentsAndMinorityInterestDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019_dei_LegalEntityAxis_rs_EagleSteelProductsIncMember_j5sVo7iTqUetkK_VK5myCQ",
                    "decimals":  "2",
                    "first":  true,
                    "lang":  null,
                    "name":  "rs:EquityMethodInvestmentOwnershipSoldPercentage",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_pure_rrGh0nN3TUCWk81LzlGETw",
                    "xsiNil":  "false"
                    }
                },
            "R56":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfInventoryCurrentTableTextBlock",
                        "us-gaap:InventoryDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "rs:LIFOInventoryCostOnFIFOAmount",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40401 - Disclosure - Inventories (Details)",
                "role":  "http://www.rsac.com/role/DisclosureInventoriesDetails",
                "shortName":  "Inventories (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfInventoryCurrentTableTextBlock",
                        "us-gaap:InventoryDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "rs:LIFOInventoryCostOnFIFOAmount",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R57":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
                        "us-gaap:QuarterlyFinancialInformationTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_10_1_2019_To_12_31_2019_MZ-zTkrNy0mRXoA6ghqXtw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40501 - Disclosure - Revenues (Details)",
                "role":  "http://www.rsac.com/role/DisclosureRevenuesDetails",
                "shortName":  "Revenues (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:DisaggregationOfRevenueTableTextBlock",
                        "us-gaap:RevenueFromContractWithCustomerTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2017_To_12_31_2017_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis_us-gaap_CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member_UZWsQQbl6EiGoKZRdm2xaQ",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R58":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2018_tx4d1U96FEKnXOg66ZAVKw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:Goodwill",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40601 - Disclosure - Goodwill (Details)",
                "role":  "http://www.rsac.com/role/DisclosureGoodwillDetails",
                "shortName":  "Goodwill (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfGoodwillTextBlock",
                        "us-gaap:GoodwillDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:GoodwillAcquiredDuringPeriod",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R59":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock",
                        "us-gaap:IntangibleAssetsDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:FiniteLivedIntangibleAssetsGross",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40701 - Disclosure - Intangible Assets, net (Details)",
                "role":  "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails",
                "shortName":  "Intangible Assets, net (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock",
                        "us-gaap:IntangibleAssetsDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:FiniteLivedIntangibleAssetsGross",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R6":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2016_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember_9EkMwU55MEK-23t7hCtAEA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "statement",
                "isDefault":  "false",
                "longName":  "00400 - Statement - CONSOLIDATED STATEMENTS OF EQUITY",
                "role":  "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity",
                "shortName":  "CONSOLIDATED STATEMENTS OF EQUITY",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2016_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember_9EkMwU55MEK-23t7hCtAEA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R60":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:CashSurrenderValueOfLifeInsurance",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40801 - Disclosure - Cash Surrender Value of Life Insurance Policies, net (Details)",
                "role":  "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails",
                "shortName":  "Cash Surrender Value of Life Insurance Policies, net (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019_rs_CashSurrenderValuePoliciesByBorrowingStatusAxis_rs_CashSurrenderValuePoliciesBorrowedMember_MyFBT9eKTEu-mhamtXtpEw",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "rs:LoansBorrowedAgainstLifeInsurancePolicies",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R61":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfDebtTableTextBlock",
                        "us-gaap:DebtDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:DebtLongtermAndShorttermCombinedAmount",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40901 - Disclosure - Debt - Summary (Details)",
                "role":  "http://www.rsac.com/role/DisclosureDebtSummaryDetails",
                "shortName":  "Debt - Summary (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfDebtTableTextBlock",
                        "us-gaap:DebtDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R62":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfDebtTableTextBlock",
                        "us-gaap:DebtDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:DebtLongtermAndShorttermCombinedAmount",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "40902 - Disclosure - Debt - Other (Details)",
                "role":  "http://www.rsac.com/role/DisclosureDebtOtherDetails",
                "shortName":  "Debt - Other (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfMaturitiesOfLongTermDebtTableTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R63":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:LeaseCostTableTextBlock",
                        "us-gaap:LesseeOperatingLeasesTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:OperatingLeaseCost",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41001 - Disclosure - Leases (Details)",
                "role":  "http://www.rsac.com/role/DisclosureLeasesDetails",
                "shortName":  "Leases (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:LeaseCostTableTextBlock",
                        "us-gaap:LesseeOperatingLeasesTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:OperatingLeaseCost",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R64":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:CurrentFederalTaxExpenseBenefit",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41101 - Disclosure - Income Taxes - Summary, Reconciliation and Other (Details)",
                "role":  "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails",
                "shortName":  "Income Taxes - Summary, Reconciliation and Other (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:CurrentFederalTaxExpenseBenefit",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R65":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:SummaryOfIncomeTaxContingenciesTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2018_tx4d1U96FEKnXOg66ZAVKw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:UnrecognizedTaxBenefits",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41102 - Disclosure - Income Taxes - Unrecognized Tax Benefits (Details)",
                "role":  "http://www.rsac.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails",
                "shortName":  "Income Taxes - Unrecognized Tax Benefits (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:SummaryOfIncomeTaxContingenciesTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2016_a56bk22w9k6UaWpzZMUsVA",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:UnrecognizedTaxBenefits",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R66":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_shares_Xsu3CavlJUKQBuIDqXEiRA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41201 - Disclosure - Stock-Based Compensation Plans - Stock Option Activity (Details)",
                "role":  "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails",
                "shortName":  "Stock-Based Compensation Plans - Stock Option Activity (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_shares_Xsu3CavlJUKQBuIDqXEiRA",
                    "xsiNil":  "false"
                    }
                },
            "R67":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_rs_ExercisePriceRangeDollar44ToDollar45Member_YKY-WYFpEUOcz8EfOI36_Q",
                    "decimals":  "0",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Divide_USD_shares_Y0q8jH-mb0uyFY2QgJeAUw",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41202 - Disclosure - Stock-Based Compensation Plans - Outstanding and Exercisable Options (Details)",
                "role":  "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansOutstandingAndExercisableOptionsDetails",
                "shortName":  "Stock-Based Compensation Plans - Outstanding and Exercisable Options (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019_us-gaap_AwardTypeAxis_us-gaap_EmployeeStockOptionMember_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_rs_ExercisePriceRangeDollar44ToDollar45Member_YKY-WYFpEUOcz8EfOI36_Q",
                    "decimals":  "0",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Divide_USD_shares_Y0q8jH-mb0uyFY2QgJeAUw",
                    "xsiNil":  "false"
                    }
                },
            "R68":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "p",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41203 - Disclosure - Stock-Based Compensation Plans - RSUs (Details)",
                "role":  "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails",
                "shortName":  "Stock-Based Compensation Plans - RSUs (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "p",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R69":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "rs:DefinedContributionPlanRequisiteServicePeriod",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41301 - Disclosure - Employee Benefits - Defined Contribution Plan Information (Details)",
                "role":  "http://www.rsac.com/role/DisclosureEmployeeBenefitsDefinedContributionPlanInformationDetails",
                "shortName":  "Employee Benefits - Defined Contribution Plan Information (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "rs:DefinedContributionPlanRequisiteServicePeriod",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                },
            "R7":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_2_1_2020_To_2_29_2020_nUfXHprcr0e23izXvvMJlA",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:CommonStockDividendsPerShareDeclared",
                    "reportCount":  1,
                    "unitRef":  "Unit_Divide_USD_shares_Y0q8jH-mb0uyFY2QgJeAUw",
                    "xsiNil":  "false"
                    },
                "groupType":  "statement",
                "isDefault":  "false",
                "longName":  "00405 - Statement - CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical)",
                "role":  "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquityParenthetical",
                "shortName":  "CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical)",
                "subGroupType":  "parenthetical",
                "uniqueAnchor":  null
                },
            "R70":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:DeferredCompensationLiabilityCurrentAndNoncurrent",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41302 - Disclosure - Employee Benefits - Summary of SERPs and Defined Benefit Plans (Details)",
                "role":  "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails",
                "shortName":  "Employee Benefits - Summary of SERPs and Defined Benefit Plans (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:DeferredCompensationLiabilityCurrentAndNoncurrent",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R71":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfAllocationOfPlanAssetsTableTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:DefinedBenefitPlanFairValueOfPlanAssets",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41303 - Disclosure - Employee Benefits - Defined Benefit Plan Termination (Details)",
                "role":  "http://www.rsac.com/role/DisclosureEmployeeBenefitsDefinedBenefitPlanTerminationDetails",
                "shortName":  "Employee Benefits - Defined Benefit Plan Termination (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_us-gaap_RetirementPlanTypeAxis_rs_FrozenDefinedBenefitPlanMember_C2UvrwZqDEe_sG72tSzXCg",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:DefinedBenefitPlanBenefitObligation",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R72":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "rs:ScheduleOfWeightedAverageAssetAllocationsByAssetCategoryTableTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "3",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_pure_rrGh0nN3TUCWk81LzlGETw",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41304 - Disclosure - Employee Benefits - Plan Assets and Investment Policy (Details)",
                "role":  "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails",
                "shortName":  "Employee Benefits - Plan Assets and Investment Policy (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "rs:ScheduleOfWeightedAverageAssetAllocationsByAssetCategoryTableTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "3",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_pure_rrGh0nN3TUCWk81LzlGETw",
                    "xsiNil":  "false"
                    }
                },
            "R73":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfExpectedBenefitPaymentsTableTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_us-gaap_RetirementPlanTypeAxis_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_bHLiKwXIL0iOgmafwZ6K-A",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41305 - Disclosure - Employee Benefits - Postretirement Plan and Summary Information for All Defined Benefit Plans (Details)",
                "role":  "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails",
                "shortName":  "Employee Benefits - Postretirement Plan and Summary Information for All Defined Benefit Plans (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfExpectedBenefitPaymentsTableTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_us-gaap_RetirementPlanTypeAxis_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_bHLiKwXIL0iOgmafwZ6K-A",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R74":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfCostsOfRetirementPlansTableTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:PensionAndOtherPostretirementBenefitExpense",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41306 - Disclosure - Employee Benefits - Supplemental Bonus Plan (Details)",
                "role":  "http://www.rsac.com/role/DisclosureEmployeeBenefitsSupplementalBonusPlanDetails",
                "shortName":  "Employee Benefits - Supplemental Bonus Plan (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfCostsOfRetirementPlansTableTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:PensionAndOtherPostretirementBenefitExpense",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R75":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "0",
                    "first":  true,
                    "lang":  null,
                    "name":  "rs:NumberOfConsecutiveYearsOfRegularCommonStockQuarterlyDividends",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_item_YyChzk4yEkydve54ljpnkg",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41401 - Disclosure - Equity - Reincorporation, Common Stock (Details)",
                "role":  "http://www.rsac.com/role/DisclosureEquityReincorporationCommonStockDetails",
                "shortName":  "Equity - Reincorporation, Common Stock (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "0",
                    "first":  true,
                    "lang":  null,
                    "name":  "rs:NumberOfConsecutiveYearsOfRegularCommonStockQuarterlyDividends",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_item_YyChzk4yEkydve54ljpnkg",
                    "xsiNil":  "false"
                    }
                },
            "R76":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_10_23_2018_To_10_23_2018_jmc_JAR6a0Odo0n7xM3g2w",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "rs:StockRepurchaseProgramIncreaseInNumberOfSharesAuthorizedToBeRepurchased",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_shares_Xsu3CavlJUKQBuIDqXEiRA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41402 - Disclosure - Equity - Share Repurchase Plan, Preferred Stock (Details)",
                "role":  "http://www.rsac.com/role/DisclosureEquityShareRepurchasePlanPreferredStockDetails",
                "shortName":  "Equity - Share Repurchase Plan, Preferred Stock (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_10_23_2018_To_10_23_2018_jmc_JAR6a0Odo0n7xM3g2w",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "rs:StockRepurchaseProgramIncreaseInNumberOfSharesAuthorizedToBeRepurchased",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_shares_Xsu3CavlJUKQBuIDqXEiRA",
                    "xsiNil":  "false"
                    }
                },
            "R77":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2018_tx4d1U96FEKnXOg66ZAVKw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41404 - Disclosure - Equity - Accumulated Other Comprehensive Loss (Details)",
                "role":  "http://www.rsac.com/role/DisclosureEquityAccumulatedOtherComprehensiveLossDetails",
                "shortName":  "Equity - Accumulated Other Comprehensive Loss (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2018_To_12_31_2018_InI2bz9OaEirJRL3CJDi9g",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R78":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:OtherNonoperatingIncomeExpense",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41501 - Disclosure - Other (Income) Expense, net (Details)",
                "role":  "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNetDetails",
                "shortName":  "Other (Income) Expense, net (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock",
                        "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019_rs_ComponentOfOtherNonoperatingIncomeExpenseAxis_rs_InvestmentIncomeFromLifeInsurancePoliciesMember_S63kOpCJOU6Uh8NDVfUGmw",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:OtherNonoperatingIncomeExpense",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R79":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_us-gaap_InventoriesMember_Z5AmD9kUVUKYD0pbyd9LHg",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41601 - Disclosure - Commitments and Contingencies - Purchase Commitments (Details)",
                "role":  "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesPurchaseCommitmentsDetails",
                "shortName":  "Commitments and Contingencies - Purchase Commitments (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_us-gaap_InventoriesMember_Z5AmD9kUVUKYD0pbyd9LHg",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R8":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:ProfitLoss",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "statement",
                "isDefault":  "false",
                "longName":  "00500 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS",
                "role":  "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows",
                "shortName":  "CONSOLIDATED STATEMENTS OF CASH FLOWS",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:ProvisionForDoubtfulAccounts",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R80":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "span",
                        "p",
                        "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_us-gaap_ConcentrationRiskByTypeAxis_us-gaap_UnionizedEmployeesConcentrationRiskMember_PN6_6Mpa90OecluvX7h4jQ",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  null,
                    "name":  "rs:NumberOfLocationEntityOperates",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_location_rUrOkZ3oIE2waGCxi-bEmA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41602 - Disclosure - Commitments and Contingencies - Collective Bargaining Agreements and Environmental Contingencies (Details)",
                "role":  "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails",
                "shortName":  "Commitments and Contingencies - Collective Bargaining Agreements and Environmental Contingencies (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "span",
                        "p",
                        "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_us-gaap_ConcentrationRiskByTypeAxis_us-gaap_UnionizedEmployeesConcentrationRiskMember_PN6_6Mpa90OecluvX7h4jQ",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  null,
                    "name":  "rs:NumberOfLocationEntityOperates",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_location_rUrOkZ3oIE2waGCxi-bEmA",
                    "xsiNil":  "false"
                    }
                },
            "R81":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
                        "us-gaap:QuarterlyFinancialInformationTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_10_1_2019_To_12_31_2019_MZ-zTkrNy0mRXoA6ghqXtw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41701 - Disclosure - Earnings Per Share (Details)",
                "role":  "http://www.rsac.com/role/DisclosureEarningsPerShareDetails",
                "shortName":  "Earnings Per Share (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
                        "us-gaap:EarningsPerShareTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-3",
                    "lang":  null,
                    "name":  "us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_shares_Xsu3CavlJUKQBuIDqXEiRA",
                    "xsiNil":  "false"
                    }
                },
            "R82":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "us-gaap:GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "INF",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:NumberOfReportableSegments",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_item_YyChzk4yEkydve54ljpnkg",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41801 - Disclosure - Segment Information - Summary of sales by product and service (Details)",
                "role":  "http://www.rsac.com/role/DisclosureSegmentInformationSummaryOfSalesByProductAndServiceDetails",
                "shortName":  "Segment Information - Summary of sales by product and service (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock",
                        "us-gaap:SegmentReportingDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "INF",
                    "lang":  null,
                    "name":  "rs:SalesRevenueGoodsAndServicesNetPercentage",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_pure_rrGh0nN3TUCWk81LzlGETw",
                    "xsiNil":  "false"
                    }
                },
            "R83":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:Revenues",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41802 - Disclosure - Segment Information - Geographic Location (Details)",
                "role":  "http://www.rsac.com/role/DisclosureSegmentInformationGeographicLocationDetails",
                "shortName":  "Segment Information - Geographic Location (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2019_LZFjybZnw02b3lH4Id0bNw",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:AssetsNoncurrent",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R84":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "ix:continuation",
                        "ix:continuation",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:TangibleAssetImpairmentCharges",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "41901 - Disclosure - Impairment and Restructuring Charges (Details)",
                "role":  "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails",
                "shortName":  "Impairment and Restructuring Charges (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfRestructuringAndRelatedCostsTextBlock",
                        "us-gaap:RestructuringImpairmentAndOtherActivitiesDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2018_To_12_31_2018_InI2bz9OaEirJRL3CJDi9g",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:ImpairmentOfIntangibleAssetsExcludingGoodwill",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R85":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
                        "us-gaap:QuarterlyFinancialInformationTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_10_1_2019_To_12_31_2019_MZ-zTkrNy0mRXoA6ghqXtw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "42001 - Disclosure - Quarterly Financial Information (Unaudited) (Details)",
                "role":  "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnauditedDetails",
                "shortName":  "Quarterly Financial Information (Unaudited) (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
                        "us-gaap:QuarterlyFinancialInformationTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_10_1_2019_To_12_31_2019_MZ-zTkrNy0mRXoA6ghqXtw",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R86":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2018_us-gaap_ValuationAllowancesAndReservesTypeAxis_us-gaap_AllowanceForCreditLossMember_KNGC_F9w0EyY2u01hs3txw",
                    "decimals":  "-5",
                    "first":  true,
                    "lang":  null,
                    "name":  "us-gaap:ValuationAllowancesAndReservesBalance",
                    "reportCount":  1,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "42101 - Disclosure - SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details)",
                "role":  "http://www.rsac.com/role/DisclosureScheduleIiValuationAndQualifyingAccountsDetails",
                "shortName":  "SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details)",
                "subGroupType":  "details",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "p",
                        "td",
                        "tr",
                        "table",
                        "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock",
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "As_Of_12_31_2016_us-gaap_ValuationAllowancesAndReservesTypeAxis_us-gaap_AllowanceForCreditLossMember_RPaHPVCLD0-6Y4TRAWemYQ",
                    "decimals":  "-5",
                    "lang":  null,
                    "name":  "us-gaap:ValuationAllowancesAndReservesBalance",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  "Unit_Standard_USD_IqYFA4jXSU2dkY9lEWSFcA",
                    "xsiNil":  "false"
                    }
                },
            "R9":  {
                "firstAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:SignificantAccountingPoliciesTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    },
                "groupType":  "disclosure",
                "isDefault":  "false",
                "longName":  "10101 - Disclosure - Summary of Significant Accounting Policies",
                "role":  "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPolicies",
                "shortName":  "Summary of Significant Accounting Policies",
                "subGroupType":  "",
                "uniqueAnchor":  {
                    "ancestors":  [
                        "div",
                        "div",
                        "body",
                        "html"
                        ],
                    "baseRef":  "rs-20191231x10kfac9e5.htm",
                    "contextRef":  "Duration_1_1_2019_To_12_31_2019__0jDJFmzfUmvq17Nx1gcDA",
                    "decimals":  null,
                    "first":  true,
                    "lang":  "en-US",
                    "name":  "us-gaap:SignificantAccountingPoliciesTextBlock",
                    "reportCount":  1,
                    "unique":  true,
                    "unitRef":  null,
                    "xsiNil":  "false"
                    }
                }
            },
        "segmentCount":  109,
        "tag":  {
            "country_KR":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "K [R]",
                            "terseLabel":  "South Korea"
                            }
                        }
                    },
                "localname":  "KR",
                "nsuri":  "http://xbrl.sec.gov/country/2017-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "country_US":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "U [S]",
                            "terseLabel":  "United States"
                            }
                        }
                    },
                "localname":  "US",
                "nsuri":  "http://xbrl.sec.gov/country/2017-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSegmentInformationGeographicLocationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "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"
                            }
                        }
                    },
                "localname":  "AmendmentFlag",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_CityAreaCode":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Area code of city",
                            "label":  "City Area Code"
                            }
                        }
                    },
                "localname":  "CityAreaCode",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "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"
                            }
                        }
                    },
                "localname":  "CurrentFiscalYearEndDate",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "gMonthDayItemType"
                },
            "dei_DocumentAnnualReport":  {
                "auth_ref":  [
                    "r504"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Boolean flag that is true only for a form used as an annual report.",
                            "label":  "Document Annual Report"
                            }
                        }
                    },
                "localname":  "DocumentAnnualReport",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "DocumentFiscalPeriodFocus",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "fiscalPeriodItemType"
                },
            "dei_DocumentFiscalYearFocus":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "This is focus fiscal year of the document report in CCYY 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"
                            }
                        }
                    },
                "localname":  "DocumentFiscalYearFocus",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "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 CCYY-MM-DD.",
                            "label":  "Document Period End Date"
                            }
                        }
                    },
                "localname":  "DocumentPeriodEndDate",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "dateItemType"
                },
            "dei_DocumentTransitionReport":  {
                "auth_ref":  [
                    "r503"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Boolean flag that is true only for a form used as a transition report.",
                            "label":  "Document Transition Report"
                            }
                        }
                    },
                "localname":  "DocumentTransitionReport",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "DocumentType",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "submissionTypeItemType"
                },
            "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"
                            }
                        }
                    },
                "localname":  "EntityAddressAddressLine1",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_EntityAddressCityOrTown":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Name of the City or Town",
                            "label":  "Entity Address, City or Town"
                            }
                        }
                    },
                "localname":  "EntityAddressCityOrTown",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_EntityAddressPostalZipCode":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Code for the postal or zip code",
                            "label":  "Entity Address, Postal Zip Code"
                            }
                        }
                    },
                "localname":  "EntityAddressPostalZipCode",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_EntityAddressStateOrProvince":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Name of the state or province.",
                            "label":  "Entity Address, State or Province"
                            }
                        }
                    },
                "localname":  "EntityAddressStateOrProvince",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "stateOrProvinceItemType"
                },
            "dei_EntityCentralIndexKey":  {
                "auth_ref":  [
                    "r505"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "EntityCentralIndexKey",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "EntityCommonStockSharesOutstanding",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "EntityCurrentReportingStatus",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "yesNoItemType"
                },
            "dei_EntityDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "All the names of the entities being reported upon in a document.  Any legal structure used to conduct activities or to hold assets.  Some examples of such structures are corporations, partnerships, limited liability companies, grantor trusts, and other trusts.  This item does not include business and geographical segments which are included in the geographical or business segments domains.",
                            "label":  "Entity [Domain]",
                            "terseLabel":  "Entity [Domain]"
                            }
                        }
                    },
                "localname":  "EntityDomain",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails",
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "dei_EntityEmergingGrowthCompany":  {
                "auth_ref":  [
                    "r505"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Indicate if registrant meets the emerging growth company criteria.",
                            "label":  "Entity Emerging Growth Company"
                            }
                        }
                    },
                "localname":  "EntityEmergingGrowthCompany",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "EntityFileNumber",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "fileNumberItemType"
                },
            "dei_EntityFilerCategory":  {
                "auth_ref":  [
                    "r505"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "EntityFilerCategory",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "EntityIncorporationStateCountryCode",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "edgarStateCountryItemType"
                },
            "dei_EntityInteractiveDataCurrent":  {
                "auth_ref":  [
                    "r506"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "EntityInteractiveDataCurrent",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "EntityPublicFloat",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "dei_EntityRegistrantName":  {
                "auth_ref":  [
                    "r505"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "EntityRegistrantName",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_EntityShellCompany":  {
                "auth_ref":  [
                    "r505"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "EntityShellCompany",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_EntitySmallBusiness":  {
                "auth_ref":  [
                    "r505"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Indicates that the company is a Smaller Reporting Company (SRC).",
                            "label":  "Entity Small Business"
                            }
                        }
                    },
                "localname":  "EntitySmallBusiness",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "booleanItemType"
                },
            "dei_EntityTaxIdentificationNumber":  {
                "auth_ref":  [
                    "r505"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "EntityTaxIdentificationNumber",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "EntityVoluntaryFilers",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "EntityWellKnownSeasonedIssuer",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "yesNoItemType"
                },
            "dei_LegalEntityAxis":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The set of legal entities associated with a report.",
                            "label":  "Legal Entity [Axis]"
                            }
                        }
                    },
                "localname":  "LegalEntityAxis",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails",
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "dei_LocalPhoneNumber":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Local phone number for entity.",
                            "label":  "Local Phone Number"
                            }
                        }
                    },
                "localname":  "LocalPhoneNumber",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "normalizedStringItemType"
                },
            "dei_Security12bTitle":  {
                "auth_ref":  [
                    "r501"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Title of a 12(b) registered security.",
                            "label":  "Title of 12(b) Security"
                            }
                        }
                    },
                "localname":  "Security12bTitle",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "securityTitleItemType"
                },
            "dei_SecurityExchangeName":  {
                "auth_ref":  [
                    "r502"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Name of the Exchange on which a security is registered.",
                            "label":  "Security Exchange Name"
                            }
                        }
                    },
                "localname":  "SecurityExchangeName",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "edgarExchangeCodeItemType"
                },
            "dei_TradingSymbol":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Trading symbol of an instrument as listed on an exchange.",
                            "label":  "Trading Symbol"
                            }
                        }
                    },
                "localname":  "TradingSymbol",
                "nsuri":  "http://xbrl.sec.gov/dei/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DocumentDocumentAndEntityInformation"
                    ],
                "xbrltype":  "tradingSymbolItemType"
                },
            "rs_AccountsReceivableAndConcentrationsOfCreditRiskPolicyTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for accounts receivable and concentrations of credit risk.",
                            "label":  "Accounts Receivable and Concentrations of Credit Risk [Policy Text Block]",
                            "terseLabel":  "Accounts Receivable and Concentrations of Credit Risk"
                            }
                        }
                    },
                "localname":  "AccountsReceivableAndConcentrationsOfCreditRiskPolicyTextBlock",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "rs_AceroPrimeSDeRLDeCVMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents information pertaining to Acero Prime S. de R.L. de C.V., an equity method investee of the entity.",
                            "label":  "Acero Prime S De R L De C V [Member]",
                            "terseLabel":  "Acero Prime S. de R.L. de C.V."
                            }
                        }
                    },
                "localname":  "AceroPrimeSDeRLDeCVMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_Acquisitions2019Member":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents information to the 2019 acquisitions.",
                            "label":  "Acquisitions2019 [Member]",
                            "terseLabel":  "2019 Acquisitions"
                            }
                        }
                    },
                "localname":  "Acquisitions2019Member",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureGoodwillDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodNetRecognitionValue":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized) offset by payments to tax authorities on employees' behalf for shares withheld related to net share settlements.  Alternate captions include the words \"stock-based compensation\".",
                            "label":  "Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Net Recognition Value",
                            "terseLabel":  "Stock-based compensation, net"
                            }
                        }
                    },
                "localname":  "AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodNetRecognitionValue",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_AllMetalsProcessingAndLogisticsIncAndDuboseNationalEnergyServicesIncAndKmsFabLLCAndKmsSouthIncMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information relating to All Metals Processing & Logistics, Inc. (All Metals) and DuBose National Energy Services, Inc. (DuBose Energy) and KMS Fab, LLC and KMS South, Inc. (collectively, \"KMS\" or \"the KMS Companies\").",
                            "label":  "All Metals Processing And Logistics Inc And Dubose National Energy Services Inc And Kms Fab L L C And Kms South Inc [Member]",
                            "terseLabel":  "All Metals, DuBose and KMS"
                            }
                        }
                    },
                "localname":  "AllMetalsProcessingAndLogisticsIncAndDuboseNationalEnergyServicesIncAndKmsFabLLCAndKmsSouthIncMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureAcquisitionsTables"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_AllMetalsProcessingAndLogisticsIncMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information relating to All Metals Processing & Logistics, Inc. (All Metals).",
                            "label":  "All Metals Processing And Logistics Inc [Member]",
                            "terseLabel":  "All Metals"
                            }
                        }
                    },
                "localname":  "AllMetalsProcessingAndLogisticsIncMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_AlloySteelMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents alloy steel, a product that is sold by the entity.",
                            "label":  "Alloy Steel [Member]",
                            "terseLabel":  "Alloy"
                            }
                        }
                    },
                "localname":  "AlloySteelMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureRevenuesDetails",
                    "http://www.rsac.com/role/DisclosureSegmentInformationSummaryOfSalesByProductAndServiceDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_AluminumMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents aluminum, a product that is sold by the entity.",
                            "label":  "Aluminum [Member]",
                            "terseLabel":  "Aluminum"
                            }
                        }
                    },
                "localname":  "AluminumMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureRevenuesDetails",
                    "http://www.rsac.com/role/DisclosureSegmentInformationSummaryOfSalesByProductAndServiceDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_BusinessAcquisitionNumberOfLocationsOfAcquireeEntity":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the number of locations where the acquiree company has the business.",
                            "label":  "Business Acquisition, Number of Locations of Acquiree Entity",
                            "verboseLabel":  "Number of locations of the acquiree entity"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionNumberOfLocationsOfAcquireeEntity",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "rs_BusinessAcquisitionPurchasePriceAllocationOtherDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Not available.",
                            "label":  "Business Acquisition, Purchase Price Allocation, Other Disclosure [Abstract]",
                            "verboseLabel":  "Summary purchase price allocation information for all acquisitions"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionPurchasePriceAllocationOtherDisclosureAbstract",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_BusinessAcquisitionSummaryInformationForEquityMethodTransactionAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Not Available.",
                            "label":  "Business Acquisition Summary Information For Equity Method Transaction Abstract",
                            "terseLabel":  "Summary Information for Equity Method Transaction"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionSummaryInformationForEquityMethodTransactionAbstract",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAndLongTermDebt":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of current and long-term debt assumed at the acquisition date.",
                            "label":  "Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Current and Long Term Debt",
                            "terseLabel":  "Current and long-term debt"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAndLongTermDebt",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAndNoncurrentLiabilitiesOther":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of other current and noncurrent liabilities assumed at the acquisition date.",
                            "label":  "Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Current and Noncurrent Liabilities Other",
                            "terseLabel":  "Other current and long-term liabilities"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAndNoncurrentLiabilitiesOther",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherCurrentAndNoncurrentAssets":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails":  {
                        "order":  8.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The amount of other current and noncurrent assets recognized as of the acquisition date.",
                            "label":  "Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Other Current and Noncurrent Assets",
                            "terseLabel":  "Other current and long-term assets"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherCurrentAndNoncurrentAssets",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_BusinessPolicyTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Disclosure of the business information such as type of operations, locations of operations, number of locations and length of operations along with types of products.",
                            "label":  "Business [Policy Text Block]",
                            "terseLabel":  "Business"
                            }
                        }
                    },
                "localname":  "BusinessPolicyTextBlock",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "rs_CarbonSteelMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents carbon steel, a product that is sold by the entity.",
                            "label":  "Carbon Steel [Member]",
                            "terseLabel":  "Carbon steel"
                            }
                        }
                    },
                "localname":  "CarbonSteelMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureRevenuesDetails",
                    "http://www.rsac.com/role/DisclosureSegmentInformationSummaryOfSalesByProductAndServiceDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_CashSurrenderValuePoliciesBorrowedMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the portion of the policy cash surrender value that is borrowed against.",
                            "label":  "Cash Surrender Value Policies Borrowed [Member]",
                            "terseLabel":  "Borrowed portion"
                            }
                        }
                    },
                "localname":  "CashSurrenderValuePoliciesBorrowedMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_CashSurrenderValuePoliciesByBorrowingStatusAxis":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Cash surrender value policies by borrowing status.",
                            "label":  "Cash Surrender Value Policies by Borrowing Status [Axis]"
                            }
                        }
                    },
                "localname":  "CashSurrenderValuePoliciesByBorrowingStatusAxis",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_CashSurrenderValuePoliciesByBorrowingStatusDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Listing of borrowing status of cash surrender value policies.",
                            "label":  "Cash Surrender Value Policies By Borrowing Status [Domain]",
                            "terseLabel":  "Cash Surrender Value Policies by Borrowing Status [Domain]"
                            }
                        }
                    },
                "localname":  "CashSurrenderValuePoliciesByBorrowingStatusDomain",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_CashSurrenderValuePoliciesOwnedByWhollyOwnedSubsidiaryLineItems":  {
                "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":  "Cash Surrender Value Policies Owned by Wholly Owned Subsidiary [Line Items]",
                            "terseLabel":  "Information about cash surrender value of life insurance policies"
                            }
                        }
                    },
                "localname":  "CashSurrenderValuePoliciesOwnedByWhollyOwnedSubsidiaryLineItems",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_CashSurrenderValuePoliciesOwnedByWhollyOwnedSubsidiaryTable":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Schedule of wholly-owned subsidiaries which are the owners and beneficiaries of life insurance policies.",
                            "label":  "Cash Surrender Value Policies Owned by Wholly Owned Subsidiary [Table]"
                            }
                        }
                    },
                "localname":  "CashSurrenderValuePoliciesOwnedByWhollyOwnedSubsidiaryTable",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_CashSurrenderValuePoliciesUnborrowedMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the portion of the policy cash surrender value that is unborrowed.",
                            "label":  "Cash Surrender Value Policies Unborrowed [Member]",
                            "terseLabel":  "Unborrowed portion"
                            }
                        }
                    },
                "localname":  "CashSurrenderValuePoliciesUnborrowedMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_CollectiveBargainingArrangementsExpirationPeriod":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the expiration period of collective bargaining agreements.",
                            "label":  "Collective Bargaining Arrangements, Expiration Period",
                            "terseLabel":  "Expiration period of collective bargaining agreements"
                            }
                        }
                    },
                "localname":  "CollectiveBargainingArrangementsExpirationPeriod",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "rs_CommonStockNumberOfVotingRightsPerShare":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The number of votes per share of common stock on all matters except the election of members to the Board of Directors.",
                            "label":  "Common Stock Number of Voting Rights Per Share",
                            "terseLabel":  "Votes per share of common stock"
                            }
                        }
                    },
                "localname":  "CommonStockNumberOfVotingRightsPerShare",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityReincorporationCommonStockDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "rs_ComponentOfOtherNonoperatingIncomeExpenseAxis":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Group that contains each detailed component of other nonoperating income and expense, which may include: (a) dividends, (b) interest on securities, (c) profits on securities (net of losses), (d) miscellaneous other income items (e) losses on securities (net of profits) and (f) miscellaneous income deductions.",
                            "label":  "Component of Other Nonoperating Income (Expense) [Axis]"
                            }
                        }
                    },
                "localname":  "ComponentOfOtherNonoperatingIncomeExpenseAxis",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNetDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_ComponentOfOtherNonoperatingIncomeExpenseLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Not Available.",
                            "label":  "Component of Other Nonoperating Income (Expense) [Line Items]",
                            "terseLabel":  "Significant components of Other (Income) Expense, net"
                            }
                        }
                    },
                "localname":  "ComponentOfOtherNonoperatingIncomeExpenseLineItems",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNetDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_ComponentOfOtherNonoperatingIncomeExpenseNameDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Name of each detailed component of other nonoperating income or expense.",
                            "label":  "Component Of Other Nonoperating Income Expense Name [Domain]",
                            "terseLabel":  "Component of Other Nonoperating Income (Expense) Name [Domain]"
                            }
                        }
                    },
                "localname":  "ComponentOfOtherNonoperatingIncomeExpenseNameDomain",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_ComponentOfOtherNonoperatingIncomeExpenseTable":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Provides a description and amount of each detailed component of other nonoperating income and expense, which may include: (a) dividends, (b) interest on securities, (c) profits on securities (net of losses), (d) miscellaneous other income items, (e) losses on securities (net of profits) and (f) miscellaneous income deductions.",
                            "label":  "Component of Other Nonoperating Income (Expense) [Table]"
                            }
                        }
                    },
                "localname":  "ComponentOfOtherNonoperatingIncomeExpenseTable",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNetDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_ConcentrationRiskValue":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the concentration risk value amount.",
                            "label":  "Concentration Risk Value",
                            "terseLabel":  "Number of employees"
                            }
                        }
                    },
                "localname":  "ConcentrationRiskValue",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "rs_CostsOfRetirementPlansLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Costs of Retirement Plans [Line Items]",
                            "terseLabel":  "Contributions to Company Sponsored Retirement Plans"
                            }
                        }
                    },
                "localname":  "CostsOfRetirementPlansLineItems",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSupplementalBonusPlanDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_CostsOfRetirementPlansTable":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information relating to costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost and net periodic benefit cost.",
                            "label":  "Costs of Retirement Plans [Table]"
                            }
                        }
                    },
                "localname":  "CostsOfRetirementPlansTable",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSupplementalBonusPlanDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_CreditAgreementMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the overall credit agreement which consists of an unsecured revolving credit facility and a term loan.",
                            "label":  "Credit Agreement [Member]",
                            "terseLabel":  "Credit Agreement"
                            }
                        }
                    },
                "localname":  "CreditAgreementMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_CumulativeEffectOfNewAccountingPrincipleDuringPeriodOfAdoption":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount after tax of increase (decrease) to equity or (increase) decrease to net assets as a result of a cumulative effect adjustment of a new accounting principle applied during the period of adoption.",
                            "label":  "Cumulative Effect of New Accounting Principle During Period of Adoption",
                            "verboseLabel":  "Reclassification of stranded tax effects resulting from tax reform"
                            }
                        }
                    },
                "localname":  "CumulativeEffectOfNewAccountingPrincipleDuringPeriodOfAdoption",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_DebtInstrumentBasisSpreadOnVariableRateAdjustment":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Adjustment to the percentage points added to the reference rate to compute the variable rate on the debt instrument.",
                            "label":  "Debt Instrument Basis Spread On Variable Rate Adjustment",
                            "terseLabel":  "Interest rate added to base rate adjustment (as a percent)"
                            }
                        }
                    },
                "localname":  "DebtInstrumentBasisSpreadOnVariableRateAdjustment",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "rs_DebtInstrumentIssuedTranchesNumber":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the number of tranches comprising the debt issuance.",
                            "label":  "Debt Instrument, Issued Tranches Number",
                            "terseLabel":  "Number of tranches comprising the debt issuance"
                            }
                        }
                    },
                "localname":  "DebtInstrumentIssuedTranchesNumber",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "rs_DebtInstrumentPaymentAtMaturity":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the lump sum amount payable at the maturity of the debt instrument.",
                            "label":  "Debt Instrument Payment at Maturity",
                            "terseLabel":  "Lump sum payment on maturity"
                            }
                        }
                    },
                "localname":  "DebtInstrumentPaymentAtMaturity",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_DebtInstrumentTermLoanAnnualAmortizationPercentageAfterSpecifiedPeriod":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the percentage of annual amortization of term loan after specified period.",
                            "label":  "Debt Instrument Term Loan Annual Amortization Percentage after Specified Period",
                            "terseLabel":  "Annual amortization of term loan thereafter until June 2021 (as a percent)"
                            }
                        }
                    },
                "localname":  "DebtInstrumentTermLoanAnnualAmortizationPercentageAfterSpecifiedPeriod",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "rs_DebtRedemptionPriceDueToChangeOfControlAndDowngradeOfCreditRatingAsPercentageOfPrincipalAmount":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the redemption price as a percentage of the principal amount at which the debt instrument may be required to be redeemed by the entity in the event of a change of control and downgrade of the entity's credit rating.",
                            "label":  "Debt Redemption Price Due to Change of Control and Downgrade of Credit Rating as Percentage of Principal Amount",
                            "terseLabel":  "Percentage of principal amount at which the notes may be required to be repurchased in event of a change of control and a downgrade of the entity's credit rating"
                            }
                        }
                    },
                "localname":  "DebtRedemptionPriceDueToChangeOfControlAndDowngradeOfCreditRatingAsPercentageOfPrincipalAmount",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "rs_DeferredCompensationPlanMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents information pertaining to the Deferred Compensation Plan, which covers certain officers and key employees, but excludes those key officers included in the Supplemental Executive Retirement Plan.",
                            "label":  "Deferred Compensation Plan [Member]",
                            "terseLabel":  "Reliance Deferred Compensation Plan"
                            }
                        }
                    },
                "localname":  "DeferredCompensationPlanMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSupplementalBonusPlanDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_DeferredTaxLiabilitiesLIFOInventoryCosts":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_DeferredIncomeTaxLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The amount as of the balance sheet date of the estimated future tax effects attributable to inventory-related costs as per LIFO method in conformity with generally accepted accounting principles, which will reverse in future periods when inventory is sold.",
                            "label":  "Deferred Tax Liabilities LIFO Inventory Costs",
                            "negatedLabel":  "LIFO inventories"
                            }
                        }
                    },
                "localname":  "DeferredTaxLiabilitiesLIFOInventoryCosts",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_DefinedBenefitPlanAssumptionsUsedInCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.",
                            "label":  "Defined Benefit Plan, Assumptions Used in Calculating Net Periodic Benefit Cost Expected Long Term Return on Assets",
                            "terseLabel":  "Expected long-term rate of return on plan assets (as a percent)"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanAssumptionsUsedInCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "rs_DefinedBenefitPlanChangeInFairValueOfPlanAssetsBenefitsPaid":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment.  Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.  This item represents a periodic decrease to the plan assets.",
                            "label":  "Defined Benefit Plan, Change in Fair Value of Plan Assets Benefits Paid",
                            "negatedLabel":  "Benefits paid"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanChangeInFairValueOfPlanAssetsBenefitsPaid",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_DefinedBenefitPlanPlanAssetsFairValueByHierarchyExcludingNav":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_DefinedBenefitPlanFairValueOfPlanAssets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of asset segregated and restricted to provide benefit under defined benefit plan.  Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee excluding NAV valuation.",
                            "label":  "Defined Benefit Plan Plan Assets Fair Value By Hierarchy Excluding Nav",
                            "terseLabel":  "Fair value of plan assets"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanPlanAssetsFairValueByHierarchyExcludingNav",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_DefinedBenefitPlanPlanAssetsNetAssetValue":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_DefinedBenefitPlanFairValueOfPlanAssets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of investments measured at net asset value under the defined benefit plan.",
                            "label":  "Defined Benefit Plan, Plan Assets, Net Asset Value",
                            "terseLabel":  "Investments measured at net asset value (NAV)"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanPlanAssetsNetAssetValue",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_DefinedContributionPlanRequisiteServicePeriod":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the period of service required for employees to be eligible for participation in the defined contribution plan.",
                            "label":  "Defined Contribution Plan, Requisite Service Period",
                            "terseLabel":  "Eligibility period of service"
                            }
                        }
                    },
                "localname":  "DefinedContributionPlanRequisiteServicePeriod",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsDefinedContributionPlanInformationDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "rs_DefinedContributionPlanShareLiabilityToPlanToBeSettledInCash":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the share liability to the plan to be settled in cash.",
                            "label":  "Defined Contribution Plan Share Liability To The Plan To Be Settled In Cash",
                            "terseLabel":  "Share liability to the plan to be settled in cash"
                            }
                        }
                    },
                "localname":  "DefinedContributionPlanShareLiabilityToPlanToBeSettledInCash",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "rs_DefinedContributionPlanSharesToBeContributedToPlanAcquiredInBusinessCombination":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the number of shares of the entity to be contributed to the plan as a result of acquisition.",
                            "label":  "Defined Contribution Plan, Shares to be Contributed to Plan Acquired in Business Combination",
                            "terseLabel":  "Number of shares of the entity to be contributed to the plan as a result of acquisition"
                            }
                        }
                    },
                "localname":  "DefinedContributionPlanSharesToBeContributedToPlanAcquiredInBusinessCombination",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "rs_DefinedContributionPlanVestingPercentage":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the percentage at which the entity's contribution under defined contribution plan vests.",
                            "label":  "Defined Contribution Plan, Vesting Percentage",
                            "terseLabel":  "Vesting percentage per year"
                            }
                        }
                    },
                "localname":  "DefinedContributionPlanVestingPercentage",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsDefinedContributionPlanInformationDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "rs_DirectorsEquityPlanMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the Directors Equity Plan whereby an employee is entitled to receive in the future, subject to vesting and other restrictions, a number of shares in the entity at a specified price, as defined in the agreement.",
                            "label":  "Directors Equity Plan [Member]",
                            "terseLabel":  "Directors Equity Plan"
                            }
                        }
                    },
                "localname":  "DirectorsEquityPlanMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_DividendsAndDividendEquivalentsCommonStockCash":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of paid and unpaid common stock dividends and dividend equivalents declared with the form of settlement in cash.",
                            "label":  "Dividends And Dividend Equivalents Common Stock Cash",
                            "negatedLabel":  "Cash dividends - $2.20, $2.00 and $1.80 per share for the years ended December 31, 2019, 2018 and 2017, respectively"
                            }
                        }
                    },
                "localname":  "DividendsAndDividendEquivalentsCommonStockCash",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_DocumentAndEntityInformationAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Document and Entity Information"
                            }
                        }
                    },
                "localname":  "DocumentAndEntityInformationAbstract",
                "nsuri":  "http://www.rsac.com/20191231",
                "xbrltype":  "stringItemType"
                },
            "rs_DuboseNationalEnergyServicesIncMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents DuBose National Energy Services, Inc. (DuBose Energy).",
                            "label":  "Dubose National Energy Services Inc [Member]",
                            "terseLabel":  "DuBose"
                            }
                        }
                    },
                "localname":  "DuboseNationalEnergyServicesIncMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_EMJMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents EMJ, a wholly-owned subsidiary of the entity.",
                            "label":  "E M J [Member]",
                            "terseLabel":  "Earle M.  Jorgensen Company (\"EMJ\")"
                            }
                        }
                    },
                "localname":  "EMJMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_EagleSteelProductsIncMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents information related to Eagle Steel Products, Inc.",
                            "label":  "Eagle Steel Products Inc [Member]",
                            "terseLabel":  "Eagle Steel Products, Inc."
                            }
                        }
                    },
                "localname":  "EagleSteelProductsIncMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptionsAndRsu":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of tax benefit from exercise of stock options and RSU granted under share-based compensation arrangement.",
                            "label":  "Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options And RSU",
                            "terseLabel":  "Tax benefit realized from option and RSU exercises"
                            }
                        }
                    },
                "localname":  "EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptionsAndRsu",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_EmployeeStockOptionWithTenYearTermMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the options with the expiration term of ten years.",
                            "label":  "Employee Stock Option With Ten Year Term [Member]",
                            "terseLabel":  "Options with ten-year term"
                            }
                        }
                    },
                "localname":  "EmployeeStockOptionWithTenYearTermMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_EmployeeStockOwnershipPlanMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents information pertaining to the Company's employee stock ownership plan (\"ESOP\"), a noncontributory plan that covers certain salaried and hourly employees of the Company.",
                            "label":  "Employee Stock Ownership Plan [Member]",
                            "terseLabel":  "ESOP"
                            }
                        }
                    },
                "localname":  "EmployeeStockOwnershipPlanMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSupplementalBonusPlanDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_EquityMethodInvestmentAndMinorityInterestLineItems":  {
                "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":  "Equity Method Investment and Minority Interest [Line Items]",
                            "terseLabel":  "Joint Ventures and Noncontrolling Interests"
                            }
                        }
                    },
                "localname":  "EquityMethodInvestmentAndMinorityInterestLineItems",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_EquityMethodInvestmentAndMinorityInterestTable":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Schedule of equity method investments and consolidated investments which are less than wholly owned.",
                            "label":  "Equity Method Investment and Minority Interest [Table]"
                            }
                        }
                    },
                "localname":  "EquityMethodInvestmentAndMinorityInterestTable",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_EquityMethodInvestmentOwnershipSoldPercentage":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting that was sold.",
                            "label":  "Equity Method Investment Ownership Sold Percentage",
                            "terseLabel":  "Ownership percentage in equity method investment sold"
                            }
                        }
                    },
                "localname":  "EquityMethodInvestmentOwnershipSoldPercentage",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "rs_EquityMethodInvestmentsAndMinorityInterestAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Joint Ventures and Noncontrolling Interests"
                            }
                        }
                    },
                "localname":  "EquityMethodInvestmentsAndMinorityInterestAbstract",
                "nsuri":  "http://www.rsac.com/20191231",
                "xbrltype":  "stringItemType"
                },
            "rs_EquityMethodInvestmentsAndMinorityInterestDisclosureTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "This item represents disclosure of information related to equity method investments in common stock.  The information which should be considered for disclosure includes: (a) the name of each investee or group of investments for which combined disclosure is appropriate, (2) the percentage ownership of common stock, (3) the difference, if any, between the carrying amount of an investment and the value of the underlying equity in the net assets and the accounting treatment of difference, if any, and (4) the aggregate value of each identified investment based on its quoted market price, if available.  This item also includes the description of noncontrolling interest in consolidated subsidiaries which could include the name of the subsidiary, the ownership percentage held by the parent, the ownership percentage held by the noncontrolling owners, the amount of the noncontrolling interest, the location of this amount on the balance sheet (when not reported separately), an explanation of the increase or decrease in the amount of the noncontrolling interest, the noncontrolling interest share of the net income (loss) of the subsidiary, the location of this amount on the income statement (when not reported separately), the nature of the noncontrolling interest such as background information and terms, the amount of the noncontrolling interest represented by preferred stock, a description of the preferred stock, and the dividend requirements of the preferred stock.",
                            "label":  "Equity Method Investments and Minority Interest Disclosure [Text Block]",
                            "terseLabel":  "Joint Ventures and Noncontrolling Interests"
                            }
                        }
                    },
                "localname":  "EquityMethodInvestmentsAndMinorityInterestDisclosureTextBlock",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterests"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "rs_ExercisePriceRangeDollar44ToDollar45Member":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the exercise price range of 44 dollar to 45 dollar.",
                            "label":  "Exercise Price Range Dollar44 To Dollar45 [Member]",
                            "terseLabel":  "Range of Exercise Price $44 - $45"
                            }
                        }
                    },
                "localname":  "ExercisePriceRangeDollar44ToDollar45Member",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansOutstandingAndExercisableOptionsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_FeralloyProcessingCompanyMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the information pertaining to Feralloy Processing Company, a subsidiary of the entity.",
                            "label":  "Feralloy Processing Company [Member]",
                            "terseLabel":  "Feralloy Processing Company"
                            }
                        }
                    },
                "localname":  "FeralloyProcessingCompanyMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_FergusonPerforatingCompanyMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information relating to Ferguson Perforating Company (\"Ferguson\").",
                            "label":  "Ferguson Perforating Company [Member]",
                            "terseLabel":  "Ferguson"
                            }
                        }
                    },
                "localname":  "FergusonPerforatingCompanyMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_FiniteLivedAndIndefiniteLivedIntangibleAssetsLineItems":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Finite Lived and Indefinite Lived Intangible Assets [Line Items]",
                            "terseLabel":  "Intangible assets"
                            }
                        }
                    },
                "localname":  "FiniteLivedAndIndefiniteLivedIntangibleAssetsLineItems",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_FrozenDefinedBenefitPlanMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the information pertaining to Frozen defined benefit plan.",
                            "label":  "Frozen Defined Benefit Plan [Member]",
                            "terseLabel":  "Frozen Defined Benefit Plan"
                            }
                        }
                    },
                "localname":  "FrozenDefinedBenefitPlanMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsDefinedBenefitPlanTerminationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_FrySteelCompanyMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents information pertaining to Fry Steel Company (\"Fry Steel\").",
                            "label":  "Fry Steel Company [Member]",
                            "terseLabel":  "Fry Steel"
                            }
                        }
                    },
                "localname":  "FrySteelCompanyMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureAcquisitionsTables"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_GoodwillDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Goodwill."
                            }
                        }
                    },
                "localname":  "GoodwillDisclosureAbstract",
                "nsuri":  "http://www.rsac.com/20191231",
                "xbrltype":  "stringItemType"
                },
            "rs_ImpactOfNewAccountingPronouncementsNotYetAdoptedPolicyTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Disclosure of the new accounting pronouncements, which are not yet adopted and may impact the entity's financial reporting.",
                            "label":  "Impact of New Accounting Pronouncements Not Yet Adopted [Policy Text Block]",
                            "terseLabel":  "Impact of Recently Issued Accounting Standards - Not Yet Adopted"
                            }
                        }
                    },
                "localname":  "ImpactOfNewAccountingPronouncementsNotYetAdoptedPolicyTextBlock",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "rs_ImpairmentAndRestructuringChargesDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Impairment and Restructuring Charges Disclosure [Abstract]",
                            "label":  "Impairment and Restructuring Charges"
                            }
                        }
                    },
                "localname":  "ImpairmentAndRestructuringChargesDisclosureAbstract",
                "nsuri":  "http://www.rsac.com/20191231",
                "xbrltype":  "stringItemType"
                },
            "rs_IncomeFromLifeInsurancePolicyRedemptionMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the income from life insurance policies for which the entity is the beneficiary.",
                            "label":  "Income From Life Insurance Policy Redemption [Member]",
                            "terseLabel":  "Income from life insurance policy redemptions"
                            }
                        }
                    },
                "localname":  "IncomeFromLifeInsurancePolicyRedemptionMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_IndianaPicklingAndProcessingCompanyMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the information pertaining to Indiana Pickling & Processing Company, a subsidiary of the entity.",
                            "label":  "Indiana Pickling And Processing Company [Member]",
                            "terseLabel":  "Indiana Pickling & Processing Company"
                            }
                        }
                    },
                "localname":  "IndianaPicklingAndProcessingCompanyMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_IndustrialRevenueBondsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents information pertaining to the industrial revenue bonds payable.",
                            "label":  "Industrial Revenue Bonds [Member]",
                            "terseLabel":  "IRB"
                            }
                        }
                    },
                "localname":  "IndustrialRevenueBondsMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_IntangibleAssetsExcludingGoodwillForeignCurrencyTranslationAdjustment":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The increase or decrease to the recorded value of intangible assets, excluding goodwill, for foreign currency translation adjustments.",
                            "label":  "Intangible Assets (Excluding Goodwill), Foreign Currency Translation Adjustment",
                            "verboseLabel":  "Changes in intangible assets due to foreign currency translation gains (losses)"
                            }
                        }
                    },
                "localname":  "IntangibleAssetsExcludingGoodwillForeignCurrencyTranslationAdjustment",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_IntangibleAssetsNetAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Intangible Assets, Net [Abstract]",
                            "terseLabel":  "Intangible assets"
                            }
                        }
                    },
                "localname":  "IntangibleAssetsNetAbstract",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_InvestmentIncomeFromLifeInsurancePoliciesMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the investment income from life insurance policies for which the entity is the beneficiary.",
                            "label":  "Investment Income From Life Insurance Policies [Member]",
                            "terseLabel":  "Investment income from life insurance policies"
                            }
                        }
                    },
                "localname":  "InvestmentIncomeFromLifeInsurancePoliciesMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_KmsFabLLCAndKmsSouthIncMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents information pertaining to KMS Fab, LLC and KMS South, Inc. (collectively, \"KMS\" or \"the KMS Companies\").",
                            "label":  "Kms Fab L L C And Kms South Inc [Member]",
                            "terseLabel":  "KMS"
                            }
                        }
                    },
                "localname":  "KmsFabLLCAndKmsSouthIncMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_LIFOInventoryCostOnFIFOAmount":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureInventoriesDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_LIFOInventoryAmount",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the amount of LIFO inventory cost on FIFO method.",
                            "label":  "L I F O Inventory Cost On F I F O Amount",
                            "terseLabel":  "LIFO inventories - cost on FIFO method"
                            }
                        }
                    },
                "localname":  "LIFOInventoryCostOnFIFOAmount",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureInventoriesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_LesseeOperatingLeaseSupplementalCashFlowAndOtherLeaseInformationTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the lessee operating lease supplemental cash flow and other lease information.",
                            "label":  "Lessee Operating Lease Supplemental Cash Flow And Other Lease Information Table Text Block",
                            "terseLabel":  "Schedule of supplemental cash flow and other lease information"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseSupplementalCashFlowAndOtherLeaseInformationTableTextBlock",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "rs_LifeInsurancePolicyCostOfInsuranceMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the cost of life insurance policies for which the entity is the beneficiary.",
                            "label":  "Life Insurance Policy Cost Of Insurance [Member]",
                            "terseLabel":  "Life insurance policy cost of insurance"
                            }
                        }
                    },
                "localname":  "LifeInsurancePolicyCostOfInsuranceMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_LineOfCreditFacilityContingentIncreaseAdditionalBorrowingCapacity":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The contingent increase above the maximum borrowing capacity under the credit facility, if any one or more of the existing banks or new banks agree to provide such increased commitment amount.",
                            "label":  "Line of Credit Facility Contingent Increase Additional Borrowing Capacity",
                            "terseLabel":  "Additional maximum borrowing capacity under the credit agreement subject to approval of the lenders and certain other conditions"
                            }
                        }
                    },
                "localname":  "LineOfCreditFacilityContingentIncreaseAdditionalBorrowingCapacity",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_LoansBorrowedAgainstLifeInsurancePolicies":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the gross amount of loans borrowed by the entity against cash surrender value of certain life insurance policies to pay premiums and accrued interest owed.",
                            "label":  "Loans Borrowed Against Life Insurance Policies",
                            "terseLabel":  "Amount of borrowed funds against cash surrender value of certain life insurance policies used to pay premiums and accrued interest owed"
                            }
                        }
                    },
                "localname":  "LoansBorrowedAgainstLifeInsurancePolicies",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_LoansBorrowedAgainstLifeInsurancePolicyFixedInterestRateUnderCertainLifeInsurancePolicies":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the fixed interest rate on borrowings against the cash surrender value of certain life insurance policies.",
                            "label":  "Loans Borrowed Against Life Insurance Policy Fixed Interest Rate under Certain Life Insurance Policies",
                            "terseLabel":  "Interest on borrowings against cash surrender value of certain life insurance policies (as a percent)"
                            }
                        }
                    },
                "localname":  "LoansBorrowedAgainstLifeInsurancePolicyFixedInterestRateUnderCertainLifeInsurancePolicies",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "rs_LoansOutstandingAgainstLifeInsurancePoliciesIncludingAccruedInterest":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the amount of loans and accrued interest outstanding on life insurance policies.",
                            "label":  "Loans Outstanding Against Life Insurance Policies Including Accrued Interest",
                            "terseLabel":  "Loans and accrued interest outstanding on EMJ's life insurance policies"
                            }
                        }
                    },
                "localname":  "LoansOutstandingAgainstLifeInsurancePoliciesIncludingAccruedInterest",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_LongLivedAssetsPolicyTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for long-lived assets including intangibles but excluding goodwill, which may include the basis of such assets, depreciation methods used and estimated useful lives and how impairment of such assets is assessed and recognized.",
                            "label":  "Long Lived Assets [Policy Text Block]",
                            "terseLabel":  "Long-Lived Assets"
                            }
                        }
                    },
                "localname":  "LongLivedAssetsPolicyTextBlock",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "rs_LongTermDebtCurrentAndShortTermDebt":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_LiabilitiesCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The current portion of long term debt and total short term debt.",
                            "label":  "Long Term Debt Current And Short Term Debt",
                            "negatedLabel":  "Less: amounts due within one year and short-term borrowings",
                            "terseLabel":  "Current maturities of long-term debt and short-term borrowings"
                            }
                        }
                    },
                "localname":  "LongTermDebtCurrentAndShortTermDebt",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtSummaryDetails",
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_MasterPlanMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents information pertaining to the Master Plan, a defined contribution plan for salaried and hourly employees of the Company and its participating subsidiaries.",
                            "label":  "Master Plan [Member]",
                            "terseLabel":  "Master Plan"
                            }
                        }
                    },
                "localname":  "MasterPlanMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSupplementalBonusPlanDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_MinimumNumberOfMetalProductsDistributedByEntity":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the minimum number of metal products distributed by entity.",
                            "label":  "Minimum Number of Metal Products Distributed by Entity",
                            "terseLabel":  "Minimum number of products the company distributes"
                            }
                        }
                    },
                "localname":  "MinimumNumberOfMetalProductsDistributedByEntity",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesBusinessDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "rs_MiscellaneousOtherNonoperatingIncomeExpenseMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the other nonoperating income and expense items not separately disclosed.",
                            "label":  "Miscellaneous Other Nonoperating Income Expense [Member]",
                            "terseLabel":  "Other, net"
                            }
                        }
                    },
                "localname":  "MiscellaneousOtherNonoperatingIncomeExpenseMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_NetPeriodicBenefitCostOtherThanServiceCostsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the amount of net periodic benefit cost other than service costs.",
                            "label":  "Net Periodic Benefit Cost Other Than Service Costs [Member]",
                            "terseLabel":  "Net periodic benefit cost - components other than service cost"
                            }
                        }
                    },
                "localname":  "NetPeriodicBenefitCostOtherThanServiceCostsMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_NumberOfCollectiveBargainingAgreementsExpiringWithinOneYear":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the number of collective bargaining agreements that expire within one year.",
                            "label":  "Number of Collective Bargaining Agreements Expiring within One Year",
                            "terseLabel":  "Number of collective bargaining agreements that expire within one year"
                            }
                        }
                    },
                "localname":  "NumberOfCollectiveBargainingAgreementsExpiringWithinOneYear",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "rs_NumberOfCollectiveBargainingAgreementsThatExpireAtVariousTimesOverNextSevenYears":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the number of collective bargaining agreements that will expire at various times over the next six years.",
                            "label":  "Number Of Collective Bargaining Agreements That Expire At Various Times Over Next Seven Years",
                            "terseLabel":  "Number of collective bargaining agreements that expire over the next six years"
                            }
                        }
                    },
                "localname":  "NumberOfCollectiveBargainingAgreementsThatExpireAtVariousTimesOverNextSevenYears",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "rs_NumberOfConsecutiveYearsOfRegularCommonStockQuarterlyDividends":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The number of consecutive years the company has paid regular common stock quarterly dividends.",
                            "label":  "Number Of Consecutive Years Of Regular Common Stock Quarterly Dividends",
                            "terseLabel":  "The number of consecutive years the company has paid regular common stock quarterly dividends."
                            }
                        }
                    },
                "localname":  "NumberOfConsecutiveYearsOfRegularCommonStockQuarterlyDividends",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityReincorporationCommonStockDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "rs_NumberOfDaysToPerformServices":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the number of days to perform services.",
                            "label":  "Number Of Days To Perform Services"
                            }
                        }
                    },
                "localname":  "NumberOfDaysToPerformServices",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionShareBasedCompensationAndForeignCurrenciesDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "rs_NumberOfLocationEntityOperates":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The number of locations the entity operates.",
                            "label":  "Number of Location Entity Operates"
                            }
                        }
                    },
                "localname":  "NumberOfLocationEntityOperates",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "rs_NumberOfLocationsAcquireeProvidesLogisticsServicesFrom":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the number of locations acquiree provides logistics services from.",
                            "label":  "Number Of Locations Acquiree Provides Logistics Services From",
                            "terseLabel":  "Locations acquiree provides logistics services from"
                            }
                        }
                    },
                "localname":  "NumberOfLocationsAcquireeProvidesLogisticsServicesFrom",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "rs_NumberOfLocationsInWhichEntityOperatesMinimum":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The minimum number of locations the entity operates in as of the balance sheet date.",
                            "label":  "Number of Locations in which Entity Operates, Minimum",
                            "terseLabel":  "Minimum number of locations in which company operates metal service center network"
                            }
                        }
                    },
                "localname":  "NumberOfLocationsInWhichEntityOperatesMinimum",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesBusinessDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "rs_NumberOfPerformanceObligationFromSaleOfMetalProducts":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the number of performance obligation from sale of metal products.",
                            "label":  "Number Of Performance Obligation From Sale Of Metal Products",
                            "terseLabel":  "Number of performance obligations from sales of metal products"
                            }
                        }
                    },
                "localname":  "NumberOfPerformanceObligationFromSaleOfMetalProducts",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionShareBasedCompensationAndForeignCurrenciesDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "rs_OperatingLeaseCostRelatedParty":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of single lease cost from related party, 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 Related Party",
                            "terseLabel":  "Operating lease cost from related parties"
                            }
                        }
                    },
                "localname":  "OperatingLeaseCostRelatedParty",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_OregonFeralloyPartnersLLCMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents information pertaining to Oregon Feralloy Partners LLC, an equity method investee of the entity.",
                            "label":  "Oregon Feralloy Partners L L C [Member]",
                            "terseLabel":  "Oregon Feralloy Partners LLC"
                            }
                        }
                    },
                "localname":  "OregonFeralloyPartnersLLCMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_OtherAccumulatedOtherComprehensiveIncomeLossNetOfTax":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of other changes after tax of other comprehensive income (loss) attributable to parent entity.",
                            "label":  "Other Accumulated Other Comprehensive Income Loss Net Of Tax",
                            "negatedLabel":  "Other current-year change"
                            }
                        }
                    },
                "localname":  "OtherAccumulatedOtherComprehensiveIncomeLossNetOfTax",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityAccumulatedOtherComprehensiveLossDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_OtherNotesAndRevolvingCreditFacilitiesMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information relating to other notes and revolving credit facilities.",
                            "label":  "Other Notes And Revolving Credit Facilities [Member]",
                            "terseLabel":  "Other notes and revolving credit facilities"
                            }
                        }
                    },
                "localname":  "OtherNotesAndRevolvingCreditFacilitiesMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtSummaryDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_OtherProductsOrServicesMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the other products and eliminations.",
                            "label":  "Other Products Or Services [Member]",
                            "terseLabel":  "Other"
                            }
                        }
                    },
                "localname":  "OtherProductsOrServicesMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureRevenuesDetails",
                    "http://www.rsac.com/role/DisclosureSegmentInformationSummaryOfSalesByProductAndServiceDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_OtherRevolvingCreditFacilityMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents information pertaining to the revolving credit facilities not specifically identified elsewhere in the existing taxonomy.",
                            "label":  "Other Revolving Credit Facility [Member]",
                            "terseLabel":  "Other notes and revolving credit facilities"
                            }
                        }
                    },
                "localname":  "OtherRevolvingCreditFacilityMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_OwnershipPercentageByParentForConsolidation":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the percentage of ownership in another entity's common stock, held directly or indirectly by the parent, for consolidation of financial statements.",
                            "label":  "Ownership Percentage by Parent for Consolidation",
                            "terseLabel":  "Percentage of ownership for consolidation of financial statements"
                            }
                        }
                    },
                "localname":  "OwnershipPercentageByParentForConsolidation",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "rs_PaymentsOfOrdinaryDividendsCommonStockAndDividendEquivalents":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInFinancingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity and dividend equivalents.",
                            "label":  "Payments of Ordinary Dividends, Common Stock And Dividend Equivalents",
                            "negatedLabel":  "Dividends and dividend equivalents paid"
                            }
                        }
                    },
                "localname":  "PaymentsOfOrdinaryDividendsCommonStockAndDividendEquivalents",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_PaymentsToAcquireNoncontrollingInterestInSubsidiaries":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInFinancingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The cash outflow associated with the purchase of noncontrolling interest during the period.",
                            "label":  "Payments to Acquire Noncontrolling Interest in Subsidiaries",
                            "negatedLabel":  "Noncontrolling interests purchased"
                            }
                        }
                    },
                "localname":  "PaymentsToAcquireNoncontrollingInterestInSubsidiaries",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_PensionAndOtherPostretirementBenefitsDisclosureAndPostemploymentBenefitsDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Employee Benefits"
                            }
                        }
                    },
                "localname":  "PensionAndOtherPostretirementBenefitsDisclosureAndPostemploymentBenefitsDisclosureAbstract",
                "nsuri":  "http://www.rsac.com/20191231",
                "xbrltype":  "stringItemType"
                },
            "rs_PensionAndOtherPostretirementBenefitsDisclosureAndPostemploymentBenefitsDisclosureTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Description containing the entire pension and other postretirement benefits disclosure as a single block of text and description containing the entire postemployment benefits disclosure which may include supplemental unemployment benefits, obligations recognized for all types of benefits provided to former or inactive employees, their beneficiaries, and covered dependents after employment but before retirement.  Disclosure may also include discussion that an obligation for postemployment benefits is not accrued in accordance with regulation only because the amount cannot be reasonably estimated.",
                            "label":  "Pension and Other Postretirement Benefits Disclosure and Postemployment Benefits Disclosure [Text Block]",
                            "terseLabel":  "Employee Benefits"
                            }
                        }
                    },
                "localname":  "PensionAndOtherPostretirementBenefitsDisclosureAndPostemploymentBenefitsDisclosureTextBlock",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefits"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "rs_PerformanceTargetPeriod":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the duration of performance targets.",
                            "label":  "Performance Target Period",
                            "terseLabel":  "Performance target period (in years)"
                            }
                        }
                    },
                "localname":  "PerformanceTargetPeriod",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "rs_PostemploymentBenefitsPeriodExpenseIncome":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Period expense (income) related to postemployment benefits.",
                            "label":  "Postemployment Benefits Period Expense Income",
                            "terseLabel":  "Expense (income) from mark to market adjustment"
                            }
                        }
                    },
                "localname":  "PostemploymentBenefitsPeriodExpenseIncome",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_PreferredStockSharesIssuanceNumberOfSeriesMinimum":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the minimum number of series in which preferred shares may be issued.",
                            "label":  "Preferred Stock Shares Issuance Number of Series Minimum",
                            "terseLabel":  "Minimum number of series in which preferred shares may be issued"
                            }
                        }
                    },
                "localname":  "PreferredStockSharesIssuanceNumberOfSeriesMinimum",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityShareRepurchasePlanPreferredStockDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "rs_PremiumsAndAccruedInterestOnLoansBorrowedAgainstLifeInsurancePolicies":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the premiums and accrued interest on loans outstanding against life insurance policies.",
                            "label":  "Premiums and Accrued Interest on Loans Borrowed Against Life Insurance Policies",
                            "terseLabel":  "Paid premiums and accrued interest on loans against policies"
                            }
                        }
                    },
                "localname":  "PremiumsAndAccruedInterestOnLoansBorrowedAgainstLifeInsurancePolicies",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_ReductionInRelianceEquityFromPurchaseOfNoncontrollingInterestForConsiderationInExcessOfReductionInNoncontrollingInterest":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the reduction in Reliance equity from purchase of non-controlling interest for consideration in excess of reduction in non-controlling interest.",
                            "label":  "Reduction In Reliance Equity From Purchase Of Noncontrolling Interest For Consideration In Excess Of Reduction In Noncontrolling Interest",
                            "terseLabel":  "Decrease in Reliance Stockholder's equity"
                            }
                        }
                    },
                "localname":  "ReductionInRelianceEquityFromPurchaseOfNoncontrollingInterestForConsiderationInExcessOfReductionInNoncontrollingInterest",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_RestrictedStockAndRestrictedStockUnitsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents information pertaining to restricted stock and restricted stock unit of the entity.",
                            "label":  "Restricted Stock And Restricted Stock Units [Member]",
                            "terseLabel":  "Unvested RSUs"
                            }
                        }
                    },
                "localname":  "RestrictedStockAndRestrictedStockUnitsMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_RestrictedStockUnitsRSU2017Member":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Details of restricted stock units granted in 2017 by the entity.",
                            "label":  "Restricted Stock Units R S U2017 [Member]",
                            "terseLabel":  "RSUs, 2017 grant"
                            }
                        }
                    },
                "localname":  "RestrictedStockUnitsRSU2017Member",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_RestrictedStockUnitsRSU2018Member":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Details of restricted stock units granted in 2018 by the entity.",
                            "label":  "Restricted Stock Units R S U2018 [Member]",
                            "terseLabel":  "RSUs, 2018 grant"
                            }
                        }
                    },
                "localname":  "RestrictedStockUnitsRSU2018Member",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_RestrictedStockUnitsRSU2019Member":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Details of restricted stock units granted in 2019 by the entity.",
                            "label":  "Restricted Stock Units R S U2019 [Member]",
                            "terseLabel":  "RSUs, 2019 grant"
                            }
                        }
                    },
                "localname":  "RestrictedStockUnitsRSU2019Member",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_RestrictedStockWithPerformanceConditionsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Contract to award shares (or remove restrictions) based on achievement of performance conditions specified in the contract.",
                            "label":  "Restricted Stock With Performance Conditions [Member]",
                            "terseLabel":  "Performance-based"
                            }
                        }
                    },
                "localname":  "RestrictedStockWithPerformanceConditionsMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_RevolvingCreditFacilityDueSeptember2021Member":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "A contractual arrangement to borrow and repay an amount under a revolving credit facility due in September 30, 2021.",
                            "label":  "Revolving Credit Facility Due September2021 [Member]",
                            "terseLabel":  "Borrowings under the Credit Agreement due September 30, 2021"
                            }
                        }
                    },
                "localname":  "RevolvingCreditFacilityDueSeptember2021Member",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_SalesRevenueGoodsAndServicesNetPercentage":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the percentage of revenue from sale of goods and services.",
                            "label":  "Sales Revenue Goods and Services Net Percentage",
                            "terseLabel":  "Sales (as a percent)"
                            }
                        }
                    },
                "localname":  "SalesRevenueGoodsAndServicesNetPercentage",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSegmentInformationSummaryOfSalesByProductAndServiceDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "rs_ScheduleOfAssumptionsUsedToDetermineBenefitObligationTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans, the benefit obligation including assumed discount rates, rate increase in compensation increase and expected long-term rates of return on plan assets.",
                            "label":  "Schedule of Assumptions Used to Determine Benefit Obligation [Table Text Block]",
                            "terseLabel":  "Schedule of assumptions used to determine the benefit obligation"
                            }
                        }
                    },
                "localname":  "ScheduleOfAssumptionsUsedToDetermineBenefitObligationTableTextBlock",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "rs_ScheduleOfAssumptionsUsedToDetermineNetPeriodicBenefitCostTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans, net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets.",
                            "label":  "Schedule of Assumptions Used to Determine Net Periodic Benefit Cost [Table Text Block]",
                            "terseLabel":  "Schedule of assumptions used to determine net periodic benefit cost"
                            }
                        }
                    },
                "localname":  "ScheduleOfAssumptionsUsedToDetermineNetPeriodicBenefitCostTableTextBlock",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "rs_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Disclosure of the carrying value of amortizable finite-lived intangible assets, including the disclosure of the carrying value of indefinite-lived intangible assets not subject to amortization, excluding goodwill, in total and by major class.",
                            "label":  "Schedule of Finite Lived and Indefinite Lived Intangible Assets by Major Class [Table]"
                            }
                        }
                    },
                "localname":  "ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_ScheduleOfFutureMinimumLeasePaymentsForLeasesTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of future minimum lease payments as of the date of the latest balance sheet presented, in aggregate and for each of the five years succeeding fiscal years under operating and capital leases.",
                            "label":  "Schedule of Future, Minimum Lease Payments for Leases [Table Text Block]",
                            "terseLabel":  "Schedule of future minimum payments under the non-cancelable leases"
                            }
                        }
                    },
                "localname":  "ScheduleOfFutureMinimumLeasePaymentsForLeasesTableTextBlock",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "rs_ScheduleOfInventoryValuationReserveAndInventoryLiquidationsTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The tabular disclosure of the LIFO valuation reserve and impact of LIFO liquidations.",
                            "label":  "Schedule Of Inventory Valuation Reserve And Inventory Liquidations [Table Text Block]",
                            "terseLabel":  "Schedule of changes in the LIFO valuation reserve and impact of LIFO liquidations"
                            }
                        }
                    },
                "localname":  "ScheduleOfInventoryValuationReserveAndInventoryLiquidationsTableTextBlock",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureInventoriesTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "rs_ScheduleOfNonvestedRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the changes in outstanding nonvested restricted stock and restricted stock units.",
                            "label":  "Schedule of Nonvested Restricted Stock and Restricted Stock Units Activity [Table Text Block]",
                            "terseLabel":  "Summary of the status of the Company's restricted stock units and changes during the year"
                            }
                        }
                    },
                "localname":  "ScheduleOfNonvestedRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "rs_ScheduleOfWeightedAverageAssetAllocationsByAssetCategoryTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the weighted-average asset allocations shown by asset category.",
                            "label":  "Schedule of Weighted Average Asset Allocations by Asset Category [Table Text Block]",
                            "terseLabel":  "Schedule of weighted-average asset allocations of the Company's Defined Benefit Plans by asset category"
                            }
                        }
                    },
                "localname":  "ScheduleOfWeightedAverageAssetAllocationsByAssetCategoryTableTextBlock",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "rs_SchedulesOfNetFundedStatusChangeInBenefitObligationsAndPlanAssetsAndNetPeriodicPensionExpenseNotYetRecognizedTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of net funded status of pension plans and/or other employee benefit plans.  May include a reconciliation of beginning and ending balances of the change in the benefit obligation of pension plans and/or other employee benefit plans, showing separately, if applicable, the effects of the following: service cost, interest cost, contributions by plan participants, actuarial gains and losses, foreign currency exchange rate changes, benefits paid, plan amendments, business combinations, divestitures, curtailments, settlements, and special and contractual termination benefits.  May include a reconciliation of beginning and ending balances of the fair value of plan assets of pension plans and/or other employee benefit plans showing separately, if applicable, the effects during the period attributable to each of the following: actual return on plan assets, foreign currency exchange rate changes, contributions by the employer, contributions by plan participants, benefits paid, business combinations, divestitures, and settlements.  Also may include disclosure of the amounts related to pension plans and/or other employee benefit plans in accumulated other comprehensive income or loss that have not yet been recognized as components of net periodic benefit cost, such as the net gain (loss), net prior service cost or credit, and net transition asset or obligation.",
                            "label":  "Schedules of Net Funded Status, Change in Benefit Obligations and Plan Assets and Net Periodic Pension Expense Not Yet Recognized [Table Text Block]",
                            "terseLabel":  "Summary of the status of the funding of the plans, change in plan assets and items not yet recognized as a component of net periodic pension expense"
                            }
                        }
                    },
                "localname":  "SchedulesOfNetFundedStatusChangeInBenefitObligationsAndPlanAssetsAndNetPeriodicPensionExpenseNotYetRecognizedTableTextBlock",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "rs_SeniorUnsecuredNotesDue2023Member":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the contractual arrangement to borrow and repay an amount under publicly traded senior unsecured notes due in 2023.",
                            "label":  "Senior Unsecured Notes Due2023 [Member]",
                            "terseLabel":  "Senior unsecured notes due April 15, 2023"
                            }
                        }
                    },
                "localname":  "SeniorUnsecuredNotesDue2023Member",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails",
                    "http://www.rsac.com/role/DisclosureDebtSummaryDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_SeniorUnsecuredNotesDueNovember2016Member":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "A contractual arrangement to borrow and repay an amount under publicly traded senior unsecured notes due in November 15, 2016.",
                            "label":  "Senior Unsecured Notes Due November2016 [Member]",
                            "terseLabel":  "Senior unsecured notes due November 15, 2016"
                            }
                        }
                    },
                "localname":  "SeniorUnsecuredNotesDueNovember2016Member",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_SeniorUnsecuredNotesDueNovember2036Member":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "A contractual arrangement to borrow and repay an amount under publicly traded senior unsecured notes due in November 15, 2036.",
                            "label":  "Senior Unsecured Notes Due November2036 [Member]",
                            "terseLabel":  "Senior unsecured notes due November 15, 2036"
                            }
                        }
                    },
                "localname":  "SeniorUnsecuredNotesDueNovember2036Member",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails",
                    "http://www.rsac.com/role/DisclosureDebtSummaryDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_SeniorUnsecuredNotesIssuedNovember2006Member":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "A contractual arrangement to borrow and repay an amount under publicly traded senior unsecured notes issued November 2006.",
                            "label":  "Senior Unsecured Notes Issued November2006 [Member]",
                            "terseLabel":  "Senior unsecured notes issued November 20, 2006"
                            }
                        }
                    },
                "localname":  "SeniorUnsecuredNotesIssuedNovember2006Member",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_SeniorUnsecuredNotesPubliclyTradedMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "A contractual arrangement to borrow and repay an amount under publicly traded senior unsecured notes.",
                            "label":  "Senior Unsecured Notes Publicly Traded [Member]",
                            "terseLabel":  "Senior Unsecured Notes"
                            }
                        }
                    },
                "localname":  "SeniorUnsecuredNotesPubliclyTradedMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodOnTheBasisOfServiceAndPerformanceCriteria":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the number of stock grants made during the period on the basis of service and performance criteria 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 on the Basis of Service and Performance Criteria",
                            "terseLabel":  "The number of grants made during the period on the basis of service and performance criteria other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan)."
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodOnTheBasisOfServiceAndPerformanceCriteria",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "rs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValueAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Not available.",
                            "label":  "Share Based Compensation Arrangement by Share Based Payment Award, Options Outstanding Intrinsic Value [Abstract]",
                            "terseLabel":  "Aggregate Intrinsic Value"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValueAbstract",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_ShareOfCommonStock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Consists of the right to receive share of common stock.",
                            "label":  "Share of Common Stock",
                            "terseLabel":  "Share of common stock"
                            }
                        }
                    },
                "localname":  "ShareOfCommonStock",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "rs_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTermAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Share Based Compensation Arrangement by Share Based Payment Award, Options Outstanding Weighted Average Remaining Contractual Term [Abstract]",
                            "terseLabel":  "Weighted Average Remaining Contractual Term"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTermAbstract",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_ShippingHandlingAndTransportationCost":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Cost incurred during the reporting period in transporting goods and services to customers.  Includes freight-out cost.",
                            "label":  "Shipping Handling And Transportation Cost",
                            "terseLabel":  "Shipping and handling costs included in operating expenses"
                            }
                        }
                    },
                "localname":  "ShippingHandlingAndTransportationCost",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionShareBasedCompensationAndForeignCurrenciesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_StainlessSteelMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents stainless steel, a product that is sold by the entity.",
                            "label":  "Stainless Steel [Member]",
                            "terseLabel":  "Stainless steel"
                            }
                        }
                    },
                "localname":  "StainlessSteelMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureRevenuesDetails",
                    "http://www.rsac.com/role/DisclosureSegmentInformationSummaryOfSalesByProductAndServiceDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_StockAwardsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents stock awards.",
                            "label":  "Stock Awards [Member]",
                            "terseLabel":  "Stock Awards"
                            }
                        }
                    },
                "localname":  "StockAwardsMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_StockIssuedDuringPeriodSharesRestrictedStockAwardNet":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Total net 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 Net",
                            "terseLabel":  "Stock-based compensation, net (in shares)"
                            }
                        }
                    },
                "localname":  "StockIssuedDuringPeriodSharesRestrictedStockAwardNet",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "rs_StockRepurchaseAcquiredAverageCostPerShare":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Total cost of shares repurchased divided by the total number of shares repurchased.",
                            "label":  "Stock Repurchase Acquired, Average Cost Per Share",
                            "terseLabel":  "Average costs per share"
                            }
                        }
                    },
                "localname":  "StockRepurchaseAcquiredAverageCostPerShare",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityShareRepurchasePlanPreferredStockDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "rs_StockRepurchaseProgramIncreaseInNumberOfSharesAuthorizedToBeRepurchased":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The increase in number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.",
                            "label":  "Stock Repurchase Program, Increase In Number Of Shares Authorized To Be Repurchased",
                            "terseLabel":  "Increase in authorized number of shares to be repurchased"
                            }
                        }
                    },
                "localname":  "StockRepurchaseProgramIncreaseInNumberOfSharesAuthorizedToBeRepurchased",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityShareRepurchasePlanPreferredStockDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "rs_StockRepurchaseProgramPercentOfOutstandingStockAuthorizedForRepurchase":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the percent of outstanding stock authorized for repurchase.",
                            "label":  "Stock Repurchase Program Percent Of Outstanding Stock Authorized For Repurchase",
                            "terseLabel":  "Percent of outstanding stock authorized for repurchase"
                            }
                        }
                    },
                "localname":  "StockRepurchaseProgramPercentOfOutstandingStockAuthorizedForRepurchase",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityShareRepurchasePlanPreferredStockDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "rs_SupplementalBonusPlanMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the information pertaining to Supplemental Bonus Plan acquired by the entity in connection with the acquisition of EMJ.",
                            "label":  "Supplemental Bonus Plan [Member]",
                            "terseLabel":  "Supplemental Bonus Plan"
                            }
                        }
                    },
                "localname":  "SupplementalBonusPlanMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_SupplementalEmployeeRetirementAndPensionPlansDefinedBenefitMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the information pertaining to defined benefit Supplemental Executive Retirement Plans and Pension Plan.  Supplemental Executive Retirement Plans refer to a defined benefit pension plan that are generally available to a limited group of key employees (sometimes referred to as a supplemental employee retirement plan) that may be payable in addition to other defined benefit pension plans available to those employees.  The benefit provides an amount of pension benefit to be provided to a retiree (or beneficiary), usually as a function of one or more factors such as age, years of service, or compensation.  A defined benefit pension plan is a plan that defines an amount of pension benefit to be provided, usually as a function of one or more factors such as age, years of service, or compensation.  Any pension plan that is not a defined contribution pension plan is a defined benefit pension plan.",
                            "label":  "Supplemental Employee Retirement And Pension Plans Defined Benefit [Member]",
                            "terseLabel":  "SERPs and Defined Benefit Plans"
                            }
                        }
                    },
                "localname":  "SupplementalEmployeeRetirementAndPensionPlansDefinedBenefitMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_TaxCutsAndJobsActOf2017AccountingIncompleteAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Not available.",
                            "label":  "Tax Cuts And Jobs Act Of 2017 Accounting Incomplete [Abstract]",
                            "terseLabel":  "Tax Cuts and Jobs Act of 2017"
                            }
                        }
                    },
                "localname":  "TaxCutsAndJobsActOf2017AccountingIncompleteAbstract",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "rs_TaxCutsAndJobsActOf2017CompleteAccountingChangesInTaxRateProvisionalIncomeTaxExpenseBenefit":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of income tax benefit for remeasurement of deferred tax assets and liabilities from change in tax rate and income tax expense for repatriation and related liabilities pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is complete.",
                            "label":  "Tax Cuts And Jobs Act Of 2017 Complete Accounting Changes In Tax Rate Provisional Income Tax Expense Benefit",
                            "negatedLabel":  "Completed tax benefit, net"
                            }
                        }
                    },
                "localname":  "TaxCutsAndJobsActOf2017CompleteAccountingChangesInTaxRateProvisionalIncomeTaxExpenseBenefit",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetLiabilityProvisionalIncomeTaxBenefit":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of reasonable estimate for income tax benefit for remeasurement of deferred tax assets and liabilities from change in tax rate pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete.",
                            "label":  "Tax Cuts And Jobs Act Of 2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Liability Provisional Income Tax Benefit",
                            "terseLabel":  "Effect of tax rate changes on deferred tax assets and liabilities"
                            }
                        }
                    },
                "localname":  "TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetLiabilityProvisionalIncomeTaxBenefit",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateRepatriationAndRelatedLiabilitiesProvisionalIncomeTaxExpense":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of reasonable estimate for income tax expense for repatriation and related liabilities pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete.",
                            "label":  "Tax Cuts And Jobs Act Of 2017 Incomplete Accounting Change In Tax Rate Repatriation And Related Liabilities Provisional Income Tax Expense",
                            "terseLabel":  "One time transition tax"
                            }
                        }
                    },
                "localname":  "TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateRepatriationAndRelatedLiabilitiesProvisionalIncomeTaxExpense",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_TollProcessingMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the toll processing service that is provided by the entity.",
                            "label":  "Toll Processing [Member]",
                            "terseLabel":  "Toll processing and logistics"
                            }
                        }
                    },
                "localname":  "TollProcessingMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureRevenuesDetails",
                    "http://www.rsac.com/role/DisclosureSegmentInformationSummaryOfSalesByProductAndServiceDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionShareBasedCompensationAndForeignCurrenciesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_UnrecordedUnconditionalPurchaseObligationThirdAnniversaryAndThereafter":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesPurchaseCommitmentsDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the third year and thereafter.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Unrecorded Unconditional Purchase Obligation Third Anniversary And Thereafter",
                            "terseLabel":  "Thereafter"
                            }
                        }
                    },
                "localname":  "UnrecordedUnconditionalPurchaseObligationThirdAnniversaryAndThereafter",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesPurchaseCommitmentsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "rs_UnsecuredRevolvingCreditFacilityDueSeptember2021Member":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "A contractual arrangement to borrow and repay an amount under an unsecured revolving credit facility due in September 30, 2021.",
                            "label":  "Unsecured Revolving Credit Facility Due September2021 [Member]",
                            "terseLabel":  "Unsecured revolving credit facility due September 30, 2021"
                            }
                        }
                    },
                "localname":  "UnsecuredRevolvingCreditFacilityDueSeptember2021Member",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails",
                    "http://www.rsac.com/role/DisclosureDebtSummaryDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_UnsecuredTermLoanDueSeptember2021Member":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "A contractual agreement to borrow and repay an amount under an unsecured term loan, due September 30, 2021.",
                            "label":  "Unsecured Term Loan Due September2021 [Member]",
                            "terseLabel":  "Unsecured term loan due from March 31, 2020 to September 30, 2021"
                            }
                        }
                    },
                "localname":  "UnsecuredTermLoanDueSeptember2021Member",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails",
                    "http://www.rsac.com/role/DisclosureDebtSummaryDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "rs_ValexCorpMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the information pertaining to Valex Corp, a subsidiary of the entity.",
                            "label":  "Valex Corp [Member]",
                            "terseLabel":  "Valex Corp."
                            }
                        }
                    },
                "localname":  "ValexCorpMember",
                "nsuri":  "http://www.rsac.com/20191231",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_AsiaMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Continent of Asia.",
                            "label":  "Asia [Member]",
                            "terseLabel":  "Asia"
                            }
                        }
                    },
                "localname":  "AsiaMember",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_DirectorMember":  {
                "auth_ref":  [
                    "r178"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Person serving on board of directors.",
                            "label":  "Director [Member]",
                            "terseLabel":  "Non-employee director"
                            }
                        }
                    },
                "localname":  "DirectorMember",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails",
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_EquityMethodInvesteeNameDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Name of investment, including named security.  Excludes consolidated entity.",
                            "label":  "Equity Method Investee Name [Domain]",
                            "terseLabel":  "Investment, Name [Domain]"
                            }
                        }
                    },
                "localname":  "EquityMethodInvesteeNameDomain",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_MaximumMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Upper limit of the provided range.",
                            "label":  "Maximum [Member]",
                            "terseLabel":  "Maximum"
                            }
                        }
                    },
                "localname":  "MaximumMember",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLongLivedAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_MinimumMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Lower limit of the provided range.",
                            "label":  "Minimum [Member]",
                            "terseLabel":  "Minimum"
                            }
                        }
                    },
                "localname":  "MinimumMember",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails",
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLongLivedAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_OwnershipAxis":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by name of entity in which ownership interest is disclosed.  Excludes equity method investee and named security investment.",
                            "label":  "Ownership [Axis]"
                            }
                        }
                    },
                "localname":  "OwnershipAxis",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "srt_OwnershipDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Name of entity in which ownership interest is disclosed.  Excludes equity method investee and named security investment.",
                            "label":  "Ownership [Domain]",
                            "terseLabel":  "Ownership [Domain]"
                            }
                        }
                    },
                "localname":  "OwnershipDomain",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_ProductOrServiceAxis":  {
                "auth_ref":  [
                    "r175",
                    "r269",
                    "r271",
                    "r492",
                    "r494"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by product and service, or group of similar products and similar services.",
                            "label":  "Products and Services [Axis]"
                            }
                        }
                    },
                "localname":  "ProductOrServiceAxis",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureRevenuesDetails",
                    "http://www.rsac.com/role/DisclosureSegmentInformationSummaryOfSalesByProductAndServiceDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionShareBasedCompensationAndForeignCurrenciesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "srt_ProductsAndServicesDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Product or service, or a group of similar products or similar services.",
                            "label":  "Products And Services [Domain]",
                            "terseLabel":  "Products and Services [Domain]"
                            }
                        }
                    },
                "localname":  "ProductsAndServicesDomain",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureRevenuesDetails",
                    "http://www.rsac.com/role/DisclosureSegmentInformationSummaryOfSalesByProductAndServiceDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionShareBasedCompensationAndForeignCurrenciesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_RangeAxis":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by statistical measurement.  Includes, but is not limited to, minimum, maximum, weighted average, arithmetic average, and median.",
                            "label":  "Range [Axis]"
                            }
                        }
                    },
                "localname":  "RangeAxis",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails",
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLongLivedAssetsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "srt_RangeMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Statistical measurement.  Includes, but is not limited to, minimum, maximum, weighted average, arithmetic average, and median.",
                            "label":  "Range [Member]",
                            "terseLabel":  "Range [Domain]"
                            }
                        }
                    },
                "localname":  "RangeMember",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails",
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLongLivedAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_RestatementAdjustmentMember":  {
                "auth_ref":  [
                    "r132",
                    "r134",
                    "r135",
                    "r136"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Effect of a correction of an error, other prior year adjustment, or application of a new accounting pronouncement on a financial statement line item or any per share amounts.  The cumulative effect of the change on retained earnings or net assets in the statement of financial position would also be represented under this domain member.",
                            "label":  "Restatement Adjustment [Member]",
                            "terseLabel":  "Restated Amount"
                            }
                        }
                    },
                "localname":  "RestatementAdjustmentMember",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesImpactOfRecentlyIssuedAccountingStandardsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_RestatementAxis":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by revision of previously issued financial statements.",
                            "label":  "Restatement [Axis]"
                            }
                        }
                    },
                "localname":  "RestatementAxis",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesImpactOfRecentlyIssuedAccountingStandardsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "srt_RestatementDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Revision of previously issued financial statements.",
                            "label":  "Restatement [Domain]",
                            "terseLabel":  "Restatement [Domain]"
                            }
                        }
                    },
                "localname":  "RestatementDomain",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesImpactOfRecentlyIssuedAccountingStandardsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis":  {
                "auth_ref":  [
                    "r183"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by name of investment, including named security.  Excludes consolidated entity.",
                            "label":  "Investment, Name [Axis]"
                            }
                        }
                    },
                "localname":  "ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "srt_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock":  {
                "auth_ref":  [
                    "r129",
                    "r509"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The entire disclosure for valuation and qualifying accounts and reserves.",
                            "label":  "Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]",
                            "terseLabel":  "SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS"
                            }
                        }
                    },
                "localname":  "ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureScheduleIiValuationAndQualifyingAccounts"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "srt_SegmentGeographicalDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Geographical area.",
                            "label":  "Segment Geographical [Domain]",
                            "terseLabel":  "Geographical [Domain]"
                            }
                        }
                    },
                "localname":  "SegmentGeographicalDomain",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails",
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails",
                    "http://www.rsac.com/role/DisclosureSegmentInformationGeographicLocationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_StatementGeographicalAxis":  {
                "auth_ref":  [
                    "r176",
                    "r269",
                    "r272",
                    "r495",
                    "r498",
                    "r500",
                    "r507",
                    "r508"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by geographical components.",
                            "label":  "Geographical [Axis]"
                            }
                        }
                    },
                "localname":  "StatementGeographicalAxis",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails",
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails",
                    "http://www.rsac.com/role/DisclosureSegmentInformationGeographicLocationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "srt_TitleOfIndividualAxis":  {
                "auth_ref":  [
                    "r178",
                    "r459"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by title of individual or nature of relationship to individual or group of individuals.",
                            "label":  "Title of Individual [Axis]"
                            }
                        }
                    },
                "localname":  "TitleOfIndividualAxis",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails",
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "srt_TitleOfIndividualWithRelationshipToEntityDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Title of individual, or nature of relationship to individual or group of individuals.",
                            "label":  "Title Of Individual With Relationship To Entity [Domain]",
                            "terseLabel":  "Relationship to Entity [Domain]"
                            }
                        }
                    },
                "localname":  "TitleOfIndividualWithRelationshipToEntityDomain",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails",
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "srt_ValuationAndQualifyingAccountsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS"
                            }
                        }
                    },
                "localname":  "ValuationAndQualifyingAccountsAbstract",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "srt_ValuationAndQualifyingAccountsDisclosureLineItems":  {
                "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":  "Valuation and Qualifying Accounts Disclosure [Line Items]",
                            "terseLabel":  "SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS"
                            }
                        }
                    },
                "localname":  "ValuationAndQualifyingAccountsDisclosureLineItems",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureScheduleIiValuationAndQualifyingAccountsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "srt_ValuationAndQualifyingAccountsDisclosureTable":  {
                "auth_ref":  [
                    "r129",
                    "r509"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Disclosure of valuation and qualifying accounts and reserves.",
                            "label":  "Valuation and Qualifying Accounts Disclosure [Table]"
                            }
                        }
                    },
                "localname":  "ValuationAndQualifyingAccountsDisclosureTable",
                "nsuri":  "http://fasb.org/srt/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureScheduleIiValuationAndQualifyingAccountsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_AccountingPoliciesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Summary of Significant Accounting Policies"
                            }
                        }
                    },
                "localname":  "AccountingPoliciesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_AccountingStandardsUpdate201602Member":  {
                "auth_ref":  [
                    "r446"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Accounting Standards Update 2016-02 Leases (Topic 842).",
                            "label":  "Accounting Standards Update201602 [Member]",
                            "terseLabel":  "ASU 2016-02 Leases"
                            }
                        }
                    },
                "localname":  "AccountingStandardsUpdate201602Member",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesImpactOfRecentlyIssuedAccountingStandardsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_AccountsPayableCurrent":  {
                "auth_ref":  [
                    "r45"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  1.0,
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AccountsReceivableNetCurrent":  {
                "auth_ref":  [
                    "r3",
                    "r29",
                    "r179",
                    "r180",
                    "r270"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  2.0,
                        "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, Net, Current",
                            "verboseLabel":  "Accounts receivable, less allowance for doubtful accounts of $17.8 at December 31, 2019 and $18.8 at December 31, 2018"
                            }
                        }
                    },
                "localname":  "AccountsReceivableNetCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AccruedInsuranceCurrent":  {
                "auth_ref":  [
                    "r9",
                    "r10",
                    "r47"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "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 obligations incurred through that date and payable to insurance entities to mitigate potential loss from various risks or to satisfy a promise to provide certain coverage's to employees.  Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
                            "label":  "Accrued Insurance, Current",
                            "terseLabel":  "Accrued insurance costs"
                            }
                        }
                    },
                "localname":  "AccruedInsuranceCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AccruedLiabilitiesCurrent":  {
                "auth_ref":  [
                    "r47"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_LiabilitiesCurrent",
                        "weight":  1.0
                        }
                    },
                "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"
                            }
                        }
                    },
                "localname":  "AccruedLiabilitiesCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember":  {
                "auth_ref":  [
                    "r64",
                    "r69",
                    "r70",
                    "r305",
                    "r420"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Accumulated other comprehensive (income) loss related to defined benefit plans including the portion attributable to the noncontrolling interest.",
                            "label":  "Accumulated Defined Benefit Plans Adjustment Including Portion Attributable To Noncontrolling Interest [Member]",
                            "terseLabel":  "Pension and Postretirement Benefit Adjustments, Net of Tax"
                            }
                        }
                    },
                "localname":  "AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityAccumulatedOtherComprehensiveLossDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment":  {
                "auth_ref":  [
                    "r43",
                    "r234"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  4.0,
                        "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":  "Accumulated depreciation"
                            }
                        }
                    },
                "localname":  "AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember":  {
                "auth_ref":  [
                    "r63",
                    "r69",
                    "r70",
                    "r420"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Accumulated other comprehensive income (loss) resulting from 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, including the portion attributable to the noncontrolling interest.",
                            "label":  "Accumulated Foreign Currency Adjustment Including Portion Attributable To Noncontrolling Interest [Member]",
                            "terseLabel":  "Foreign Currency Translation Loss"
                            }
                        }
                    },
                "localname":  "AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityAccumulatedOtherComprehensiveLossDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax":  {
                "auth_ref":  [
                    "r65",
                    "r69"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).",
                            "label":  "Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax",
                            "terseLabel":  "Defined benefit plan, Accumulated comprehensive loss"
                            }
                        }
                    },
                "localname":  "AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsDefinedBenefitPlanTerminationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax":  {
                "auth_ref":  [
                    "r67",
                    "r68",
                    "r69"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_StockholdersEquity",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end.  Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners.  Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.",
                            "label":  "Accumulated Other Comprehensive Income (Loss), Net of Tax",
                            "periodEndLabel":  "Balance at the end of the period",
                            "periodStartLabel":  "Balance at the beginning of the period",
                            "terseLabel":  "Accumulated other comprehensive loss"
                            }
                        }
                    },
                "localname":  "AccumulatedOtherComprehensiveIncomeLossNetOfTax",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityAccumulatedOtherComprehensiveLossDetails",
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AccumulatedOtherComprehensiveIncomeMember":  {
                "auth_ref":  [
                    "r66",
                    "r69",
                    "r70",
                    "r420"
                    ],
                "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":  "Accumulated Other Comprehensive Income [Member]",
                            "terseLabel":  "Accumulated Other Comprehensive (Loss) Income"
                            }
                        }
                    },
                "localname":  "AccumulatedOtherComprehensiveIncomeMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife":  {
                "auth_ref":  [
                    "r220"
                    ],
                "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":  "Weighted average lives of identifiable intangible assets"
                            }
                        }
                    },
                "localname":  "AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_AdjustmentsForNewAccountingPronouncementsAxis":  {
                "auth_ref":  [
                    "r131"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by new accounting pronouncement.",
                            "label":  "Adjustments for New Accounting Pronouncements [Axis]"
                            }
                        }
                    },
                "localname":  "AdjustmentsForNewAccountingPronouncementsAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesImpactOfRecentlyIssuedAccountingStandardsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of decrease to equity for grantee's tax withholding obligation for award under share-based payment arrangement.",
                            "label":  "Adjustments Related to Tax Withholding for Share-based Compensation",
                            "terseLabel":  "Payments to tax authorities on employees' behalf for shares withheld related to share settlements"
                            }
                        }
                    },
                "localname":  "AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "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 income to net cash provided by operating activities:"
                            }
                        }
                    },
                "localname":  "AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_AllowanceForCreditLossMember":  {
                "auth_ref":  [
                    "r128"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Allowance for credit loss from right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.",
                            "label":  "Allowance For Credit Loss [Member]",
                            "terseLabel":  "Allowance for doubtful accounts"
                            }
                        }
                    },
                "localname":  "AllowanceForCreditLossMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureScheduleIiValuationAndQualifyingAccountsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent":  {
                "auth_ref":  [
                    "r35",
                    "r181",
                    "r185"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of allowance for credit loss on accounts receivable, classified as current.",
                            "label":  "Allowance for Doubtful Accounts Receivable, Current",
                            "terseLabel":  "Accounts receivable, allowance for doubtful accounts"
                            }
                        }
                    },
                "localname":  "AllowanceForDoubtfulAccountsReceivableCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheetsParenthetical"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AmortizationOfIntangibleAssets":  {
                "auth_ref":  [
                    "r110",
                    "r217",
                    "r226"
                    ],
                "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 for intangible assets"
                            }
                        }
                    },
                "localname":  "AmortizationOfIntangibleAssets",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AssetImpairmentCharges":  {
                "auth_ref":  [
                    "r110",
                    "r232"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_RestructuringCostsAndAssetImpairmentCharges",
                        "weight":  1.0
                        },
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  1.0
                        },
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_CostsAndExpenses",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of write-down of assets recognized in the income statement.  Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.",
                            "label":  "Asset Impairment Charges",
                            "totalLabel":  "Total impairment charges",
                            "verboseLabel":  "Impairment of long-lived assets"
                            }
                        }
                    },
                "localname":  "AssetImpairmentCharges",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_Assets":  {
                "auth_ref":  [
                    "r170",
                    "r466",
                    "r481"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AssetsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Assets [Abstract]",
                            "terseLabel":  "ASSETS"
                            }
                        }
                    },
                "localname":  "AssetsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_AssetsCurrent":  {
                "auth_ref":  [
                    "r4",
                    "r5",
                    "r61"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  1.0,
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AssetsCurrentAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Assets, Current [Abstract]",
                            "terseLabel":  "Current assets:"
                            }
                        }
                    },
                "localname":  "AssetsCurrentAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_AssetsNoncurrent":  {
                "auth_ref":  [
                    "r13",
                    "r14",
                    "r15",
                    "r16",
                    "r17",
                    "r18",
                    "r19",
                    "r20"
                    ],
                "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 after one year or beyond the normal operating cycle, if longer.",
                            "label":  "Assets, Noncurrent",
                            "terseLabel":  "Long-lived assets"
                            }
                        }
                    },
                "localname":  "AssetsNoncurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSegmentInformationGeographicLocationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_AwardTypeAxis":  {
                "auth_ref":  [
                    "r329",
                    "r353"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by type of award under share-based payment arrangement.",
                            "label":  "Award Type [Axis]"
                            }
                        }
                    },
                "localname":  "AwardTypeAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansOutstandingAndExercisableOptionsDetails",
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails",
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_BuildingMember":  {
                "auth_ref":  [
                    "r233"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Facility held for productive use including, but not limited to, office, production, storage and distribution facilities.",
                            "label":  "Building [Member]",
                            "terseLabel":  "Buildings"
                            }
                        }
                    },
                "localname":  "BuildingMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLongLivedAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_BuildingsAndImprovementsGross":  {
                "auth_ref":  [
                    "r8",
                    "r233"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_PropertyPlantAndEquipmentNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.",
                            "label":  "Buildings and Improvements, Gross",
                            "terseLabel":  "Buildings"
                            }
                        }
                    },
                "localname":  "BuildingsAndImprovementsGross",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessAcquisitionAcquireeDomain":  {
                "auth_ref":  [
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureAcquisitionsTables",
                    "http://www.rsac.com/role/DisclosureGoodwillDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_BusinessAcquisitionAxis":  {
                "auth_ref":  [
                    "r397",
                    "r398"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by business combination or series of individually immaterial business combinations.",
                            "label":  "Business Acquisition [Axis]"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureAcquisitionsTables",
                    "http://www.rsac.com/role/DisclosureGoodwillDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "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":  "Acquisitions",
                            "verboseLabel":  "Goodwill"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureAcquisitionsTables",
                    "http://www.rsac.com/role/DisclosureGoodwillDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired":  {
                "auth_ref":  [
                    "r395"
                    ],
                "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":  "Ownership interest acquired (as a percent)"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionPercentageOfVotingInterestsAcquired",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount":  {
                "auth_ref":  [
                    "r407"
                    ],
                "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":  "Tax deductible goodwill amount",
                            "verboseLabel":  "Goodwill, tax deductible amount"
                            }
                        }
                    },
                "localname":  "BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureGoodwillDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationDisclosureTextBlock":  {
                "auth_ref":  [
                    "r408"
                    ],
                "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":  "Acquisitions"
                            }
                        }
                    },
                "localname":  "BusinessCombinationDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitions"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual":  {
                "auth_ref":  [
                    "r396"
                    ],
                "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":  "Sales since acquisition date"
                            }
                        }
                    },
                "localname":  "BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets":  {
                "auth_ref":  [
                    "r400"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of assets acquired at the acquisition date.",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets",
                            "terseLabel":  "Total assets",
                            "totalLabel":  "Total assets acquired"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents":  {
                "auth_ref":  [
                    "r400"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets",
                        "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"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables":  {
                "auth_ref":  [
                    "r400"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets",
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities":  {
                "auth_ref":  [
                    "r362",
                    "r400"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails":  {
                        "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 Noncurrent",
                            "terseLabel":  "Deferred taxes"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets":  {
                "auth_ref":  [
                    "r400"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails":  {
                        "order":  7.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets",
                            "terseLabel":  "Intangible assets not subject to amortization"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles":  {
                "auth_ref":  [
                    "r399",
                    "r400"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets",
                        "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 subject to amortization"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory":  {
                "auth_ref":  [
                    "r399",
                    "r400"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The amount of inventory recognized as of the acquisition date.",
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory",
                            "terseLabel":  "Inventories"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities":  {
                "auth_ref":  [
                    "r400"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails":  {
                        "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 assumed"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment":  {
                "auth_ref":  [
                    "r399",
                    "r400"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets",
                        "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":  "Property, plant and equipment"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet":  {
                "auth_ref":  [
                    "r400"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails":  {
                        "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":  "Net assets acquired"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNetAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]",
                            "terseLabel":  "Allocation of the total purchase price of the acquisitions to the fair value of the assets acquired and liabilities assumed"
                            }
                        }
                    },
                "localname":  "BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNetAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeIncludingSubsequentAcquisitionPercentage":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date.",
                            "label":  "Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage",
                            "terseLabel":  "Total ownership percentage (as a percent)"
                            }
                        }
                    },
                "localname":  "BusinessCombinationStepAcquisitionEquityInterestInAcquireeIncludingSubsequentAcquisitionPercentage",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination.",
                            "label":  "Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage",
                            "terseLabel":  "Ownership interest prior to acquisition (as a percent)"
                            }
                        }
                    },
                "localname":  "BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_BusinessCombinationsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Acquisitions"
                            }
                        }
                    },
                "localname":  "BusinessCombinationsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member":  {
                "auth_ref":  [
                    "r273"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Calculated under guidance for revenue recognition in effect prior to change to new guidance for revenue from contract with customer when using transition method for cumulative effect in period including initial date of application.",
                            "label":  "Calculated Under Revenue Guidance In Effect Before Topic606 [Member]",
                            "terseLabel":  "Before adoption of ASU 2014-09"
                            }
                        }
                    },
                "localname":  "CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureRevenuesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CashAndCashEquivalentsAtCarryingValue":  {
                "auth_ref":  [
                    "r1",
                    "r41",
                    "r112"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_AssetsCurrent",
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CashAndCashEquivalentsPolicyTextBlock":  {
                "auth_ref":  [
                    "r12",
                    "r113",
                    "r119"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents.  Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value.",
                            "label":  "Cash and Cash Equivalents, Policy [Policy Text Block]",
                            "terseLabel":  "Cash Equivalents"
                            }
                        }
                    },
                "localname":  "CashAndCashEquivalentsPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents":  {
                "auth_ref":  [
                    "r106",
                    "r112",
                    "r118"
                    ],
                "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 and cash equivalents at end of year",
                            "periodStartLabel":  "Cash and cash equivalents at beginning of year"
                            }
                        }
                    },
                "localname":  "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect":  {
                "auth_ref":  [
                    "r106",
                    "r436"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "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":  "Increase (decrease) in cash and cash equivalents"
                            }
                        }
                    },
                "localname":  "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_CashSurrenderValueDuePolicyholdersAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Cash Surrender Value of Life Insurance Policies, net"
                            }
                        }
                    },
                "localname":  "CashSurrenderValueDuePolicyholdersAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_CashSurrenderValueOfLifeInsurance":  {
                "auth_ref":  [
                    "r6",
                    "r44"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_Assets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.",
                            "label":  "Cash Surrender Value of Life Insurance",
                            "terseLabel":  "Cash surrender value of life insurance policies, net",
                            "verboseLabel":  "Cash surrender value of all life insurance policies, net of loans and related accrued interest"
                            }
                        }
                    },
                "localname":  "CashSurrenderValueOfLifeInsurance",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails",
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CommitmentsAndContingencies":  {
                "auth_ref":  [
                    "r52",
                    "r253",
                    "r474",
                    "r487"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "CommitmentsAndContingencies",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CommitmentsAndContingenciesDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Commitment and Contingencies"
                            }
                        }
                    },
                "localname":  "CommitmentsAndContingenciesDisclosureAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock":  {
                "auth_ref":  [
                    "r252",
                    "r254"
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingencies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_CommonStockDividendsPerShareCashPaid":  {
                "auth_ref":  [
                    "r266"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Aggregate dividends paid during the period for each share of common stock outstanding.",
                            "label":  "Common Stock, Dividends, Per Share, Cash Paid",
                            "terseLabel":  "Cash dividends per share (in dollars per share)"
                            }
                        }
                    },
                "localname":  "CommonStockDividendsPerShareCashPaid",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_CommonStockDividendsPerShareDeclared":  {
                "auth_ref":  [
                    "r266"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Aggregate dividends declared during the period for each share of common stock outstanding.",
                            "label":  "Common Stock, Dividends, Per Share, Declared",
                            "terseLabel":  "Common stock quarterly dividend per share (in dollars per share)",
                            "verboseLabel":  "Cash dividends per share (in dollars per share)"
                            }
                        }
                    },
                "localname":  "CommonStockDividendsPerShareDeclared",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityReincorporationCommonStockDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquityParenthetical"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Common stock held by shareholders with par value plus amounts in excess of par value or issuance value (in cases of no-par value stock).",
                            "label":  "Common Stock Including Additional Paid In Capital [Member]",
                            "terseLabel":  "Common Stock and Additional Paid in Capital"
                            }
                        }
                    },
                "localname":  "CommonStockIncludingAdditionalPaidInCapitalMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]",
                            "terseLabel":  "Common Stock"
                            }
                        }
                    },
                "localname":  "CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityReincorporationCommonStockDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_CommonStockParOrStatedValuePerShare":  {
                "auth_ref":  [
                    "r28"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Face amount or stated value per share of common stock.",
                            "label":  "Common Stock, No Par Value",
                            "terseLabel":  "Common stock, par value (in dollars per share)"
                            }
                        }
                    },
                "localname":  "CommonStockParOrStatedValuePerShare",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheetsParenthetical"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_CommonStockSharesAuthorized":  {
                "auth_ref":  [
                    "r28"
                    ],
                "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, Authorized shares"
                            }
                        }
                    },
                "localname":  "CommonStockSharesAuthorized",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheetsParenthetical"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_CommonStockSharesIssued":  {
                "auth_ref":  [
                    "r28"
                    ],
                "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",
                            "periodEndLabel":  "Balance (in shares)",
                            "periodStartLabel":  "Balance (in shares)",
                            "terseLabel":  "Common stock, Issued shares"
                            }
                        }
                    },
                "localname":  "CommonStockSharesIssued",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheetsParenthetical",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_CommonStockSharesOutstanding":  {
                "auth_ref":  [
                    "r28",
                    "r261"
                    ],
                "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, outstanding shares"
                            }
                        }
                    },
                "localname":  "CommonStockSharesOutstanding",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheetsParenthetical"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_CommonStocksIncludingAdditionalPaidInCapital":  {
                "auth_ref":  [
                    "r28",
                    "r30",
                    "r266"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_StockholdersEquity",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of par value plus amounts in excess of par value or issuance value for common stock issued.",
                            "label":  "Common Stocks, Including Additional Paid in Capital",
                            "terseLabel":  "Common stock and additional paid-in capital, $0.001 par value:  Authorized shares - 200,000 Issued and outstanding shares - 66,854 at December 31, 2019 and 66,882 at December 31, 2018"
                            }
                        }
                    },
                "localname":  "CommonStocksIncludingAdditionalPaidInCapital",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ComponentsOfDeferredTaxAssetsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Components of Deferred Tax Assets [Abstract]",
                            "terseLabel":  "Deferred tax assets:"
                            }
                        }
                    },
                "localname":  "ComponentsOfDeferredTaxAssetsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Components of Deferred Tax Assets and Liabilities [Abstract]",
                            "terseLabel":  "Components of deferred tax assets and liabilities"
                            }
                        }
                    },
                "localname":  "ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Components of Deferred Tax Liabilities [Abstract]",
                            "terseLabel":  "Deferred tax liabilities:"
                            }
                        }
                    },
                "localname":  "ComponentsOfDeferredTaxLiabilitiesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ComponentsOfIncomeTaxExpenseBenefitContinuingOperationsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]",
                            "terseLabel":  "Components of the provision for income taxes"
                            }
                        }
                    },
                "localname":  "ComponentsOfIncomeTaxExpenseBenefitContinuingOperationsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ComprehensiveIncomeNetOfTax":  {
                "auth_ref":  [
                    "r73",
                    "r75",
                    "r76"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome":  {
                        "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":  "Comprehensive income attributable to Reliance"
                            }
                        }
                    },
                "localname":  "ComprehensiveIncomeNetOfTax",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest":  {
                "auth_ref":  [
                    "r73",
                    "r75",
                    "r412",
                    "r413",
                    "r423"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_ComprehensiveIncomeNetOfTax",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests.  Excludes changes in equity resulting from investments by owners and distributions to owners.",
                            "label":  "Comprehensive (Income) Loss, Net of Tax, Attributable to Noncontrolling Interest",
                            "terseLabel":  "Less:  Comprehensive income attributable to noncontrolling interests"
                            }
                        }
                    },
                "localname":  "ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest":  {
                "auth_ref":  [
                    "r73",
                    "r75",
                    "r411",
                    "r423"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_ComprehensiveIncomeNetOfTax",
                        "weight":  1.0
                        }
                    },
                "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.  Excludes changes in equity resulting from investments by owners and distributions to owners.",
                            "label":  "Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest",
                            "totalLabel":  "Comprehensive income"
                            }
                        }
                    },
                "localname":  "ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ComputerSoftwareIntangibleAssetMember":  {
                "auth_ref":  [
                    "r218",
                    "r224",
                    "r406"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Collection of computer programs and related data that provide instructions to a computer, for example, but not limited to, application program, control module or operating system, that perform one or more particular functions or tasks.",
                            "label":  "Computer Software Intangible Asset [Member]",
                            "terseLabel":  "Software"
                            }
                        }
                    },
                "localname":  "ComputerSoftwareIntangibleAssetMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_ConcentrationRiskBenchmarkDomain":  {
                "auth_ref":  [
                    "r157",
                    "r159",
                    "r430",
                    "r431"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The denominator in a calculation of a disclosed concentration risk percentage.",
                            "label":  "Concentration Risk Benchmark [Domain]",
                            "terseLabel":  "Concentration Risk Benchmark [Domain]"
                            }
                        }
                    },
                "localname":  "ConcentrationRiskBenchmarkDomain",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_ConcentrationRiskByBenchmarkAxis":  {
                "auth_ref":  [
                    "r157",
                    "r159",
                    "r430",
                    "r431",
                    "r497"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by benchmark of concentration risk.",
                            "label":  "Concentration Risk Benchmark [Axis]"
                            }
                        }
                    },
                "localname":  "ConcentrationRiskByBenchmarkAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ConcentrationRiskByTypeAxis":  {
                "auth_ref":  [
                    "r157",
                    "r159",
                    "r430",
                    "r431",
                    "r497"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by type of concentration risk, for example, but not limited to, asset, liability, net assets, geographic, customer, employees, supplier, lender.",
                            "label":  "Concentration Risk Type [Axis]"
                            }
                        }
                    },
                "localname":  "ConcentrationRiskByTypeAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ConcentrationRiskLineItems":  {
                "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":  "Concentration Risk [Line Items]",
                            "terseLabel":  "Collective Bargaining Agreements"
                            }
                        }
                    },
                "localname":  "ConcentrationRiskLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ConcentrationRiskPercentage1":  {
                "auth_ref":  [
                    "r157",
                    "r159",
                    "r430",
                    "r431"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the \"benchmark\" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.",
                            "label":  "Concentration Risk, Percentage",
                            "terseLabel":  "Percentage of employees covered by collective bargaining agreements"
                            }
                        }
                    },
                "localname":  "ConcentrationRiskPercentage1",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_ConcentrationRiskTable":  {
                "auth_ref":  [
                    "r156",
                    "r157",
                    "r159",
                    "r160",
                    "r430",
                    "r432"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Describes the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark.",
                            "label":  "Concentration Risk [Table]"
                            }
                        }
                    },
                "localname":  "ConcentrationRiskTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ConcentrationRiskTypeDomain":  {
                "auth_ref":  [
                    "r157",
                    "r159",
                    "r430",
                    "r431"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "For an entity that discloses a concentration risk as a percentage of some financial balance or benchmark, identifies the type (for example, asset, liability, net assets, geographic, customer, employees, supplier, lender) of the concentration.",
                            "label":  "Concentration Risk Type [Domain]",
                            "terseLabel":  "Concentration Risk Type [Domain]"
                            }
                        }
                    },
                "localname":  "ConcentrationRiskTypeDomain",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_ConsolidationPolicyTextBlock":  {
                "auth_ref":  [
                    "r119",
                    "r416",
                    "r424",
                    "r425"
                    ],
                "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":  "Principles of Consolidation"
                            }
                        }
                    },
                "localname":  "ConsolidationPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_CorporateDebtSecuritiesMember":  {
                "auth_ref":  [
                    "r293",
                    "r324",
                    "r496"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Debt securities issued by domestic or foreign corporate business, banks and other entities with a promise of repayment.",
                            "label":  "Corporate Debt Securities [Member]",
                            "terseLabel":  "Corporate debt securities"
                            }
                        }
                    },
                "localname":  "CorporateDebtSecuritiesMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization":  {
                "auth_ref":  [
                    "r83",
                    "r84"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnauditedDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_GrossProfit",
                        "weight":  -1.0
                        },
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_CostsAndExpenses",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Cost of product sold and service rendered, excluding depreciation, depletion, and amortization.",
                            "label":  "Cost of Goods Sold, Excluding Depreciation, Depletion, and Amortization",
                            "terseLabel":  "Cost of sales (exclusive of depreciation and amortization shown below)",
                            "verboseLabel":  "Cost of sales"
                            }
                        }
                    },
                "localname":  "CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnauditedDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "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 sales"
                            }
                        }
                    },
                "localname":  "CostOfSalesMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CostsAndExpenses":  {
                "auth_ref":  [
                    "r87"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_OperatingIncomeLoss",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Total costs of sales and operating expenses for the period.",
                            "label":  "Costs and Expenses",
                            "totalLabel":  "Total costs and expenses"
                            }
                        }
                    },
                "localname":  "CostsAndExpenses",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CostsAndExpensesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Costs and Expenses [Abstract]",
                            "terseLabel":  "Costs and expenses:"
                            }
                        }
                    },
                "localname":  "CostsAndExpensesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_CurrentFederalTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r121",
                    "r385",
                    "r389"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CurrentForeignTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r125",
                    "r387"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CurrentIncomeTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r121",
                    "r385",
                    "r389"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  1.0,
                        "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"
                            }
                        }
                    },
                "localname":  "CurrentIncomeTaxExpenseBenefit",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Current Income Tax Expense (Benefit), Continuing Operations [Abstract]",
                            "terseLabel":  "Current:"
                            }
                        }
                    },
                "localname":  "CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_CurrentStateAndLocalTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r121",
                    "r385",
                    "r389"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_CustomerListsMember":  {
                "auth_ref":  [
                    "r404"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information about customers such as their name and contact information; it may also be an extensive database that includes other information about the customers such as their order history and demographic information.",
                            "label":  "Customer Lists [Member]",
                            "terseLabel":  "Customer lists/relationships"
                            }
                        }
                    },
                "localname":  "CustomerListsMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_CustomerRelationshipsMember":  {
                "auth_ref":  [
                    "r405"
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_DebtDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Debt"
                            }
                        }
                    },
                "localname":  "DebtDisclosureAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DebtDisclosureTextBlock":  {
                "auth_ref":  [
                    "r260"
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebt"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_DebtInstrumentAxis":  {
                "auth_ref":  [
                    "r21",
                    "r22",
                    "r23",
                    "r467",
                    "r469",
                    "r480"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by type of debt instrument, including, but not limited to, draws against credit facilities.",
                            "label":  "Debt Instrument [Axis]"
                            }
                        }
                    },
                "localname":  "DebtInstrumentAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails",
                    "http://www.rsac.com/role/DisclosureDebtSummaryDetails"
                    ],
                "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":  "Interest rate added to base (as a percent)"
                            }
                        }
                    },
                "localname":  "DebtInstrumentBasisSpreadOnVariableRate1",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_DebtInstrumentCarryingAmount":  {
                "auth_ref":  [
                    "r23",
                    "r257",
                    "r469",
                    "r480"
                    ],
                "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":  "Carrying value, before deducting unamortized discount or premiums"
                            }
                        }
                    },
                "localname":  "DebtInstrumentCarryingAmount",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DebtInstrumentDescriptionOfVariableRateBasis":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.",
                            "label":  "Debt Instrument, Description of Variable Rate Basis",
                            "terseLabel":  "Variable interest rate"
                            }
                        }
                    },
                "localname":  "DebtInstrumentDescriptionOfVariableRateBasis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DebtInstrumentInterestRateStatedPercentage":  {
                "auth_ref":  [
                    "r49"
                    ],
                "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 (as a percent)"
                            }
                        }
                    },
                "localname":  "DebtInstrumentInterestRateStatedPercentage",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "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",
                            "verboseLabel":  "Fair Values of Financial Instruments"
                            }
                        }
                    },
                "localname":  "DebtInstrumentLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails",
                    "http://www.rsac.com/role/DisclosureDebtSummaryDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DebtInstrumentNameDomain":  {
                "auth_ref":  [
                    "r50"
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails",
                    "http://www.rsac.com/role/DisclosureDebtSummaryDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_DebtInstrumentTable":  {
                "auth_ref":  [
                    "r50",
                    "r122",
                    "r262",
                    "r263",
                    "r264",
                    "r265",
                    "r440",
                    "r441",
                    "r443",
                    "r478"
                    ],
                "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]"
                            }
                        }
                    },
                "localname":  "DebtInstrumentTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails",
                    "http://www.rsac.com/role/DisclosureDebtSummaryDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueDetails"
                    ],
                "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 term"
                            }
                        }
                    },
                "localname":  "DebtInstrumentTerm",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet":  {
                "auth_ref":  [
                    "r258",
                    "r442"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of unamortized debt discount (premium) and debt issuance costs.",
                            "label":  "Debt Instrument, Unamortized Discount And Debt Issuance Cost",
                            "negatedLabel":  "Less: unamortized discount and debt issuance costs"
                            }
                        }
                    },
                "localname":  "DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtSummaryDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DebtLongtermAndShorttermCombinedAmount":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Represents the aggregate of total long-term debt, including current maturities and short-term debt.",
                            "label":  "Long-term Debt, Long Term Short Term Gross",
                            "terseLabel":  "Total carrying value of debt",
                            "verboseLabel":  "Total"
                            }
                        }
                    },
                "localname":  "DebtLongtermAndShorttermCombinedAmount",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails",
                    "http://www.rsac.com/role/DisclosureDebtSummaryDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DebtWeightedAverageInterestRate":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Weighted average interest rate of debt outstanding.",
                            "label":  "Debt, Weighted Average Interest Rate",
                            "terseLabel":  "Weighted average fixed interest rate (as a percent)"
                            }
                        }
                    },
                "localname":  "DebtWeightedAverageInterestRate",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements.  Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.",
                            "label":  "Deferred Compensation Liability, Current and Noncurrent",
                            "terseLabel":  "Balances in Deferred Compensation Plan"
                            }
                        }
                    },
                "localname":  "DeferredCompensationLiabilityCurrentAndNoncurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredCompensationPlanAssets":  {
                "auth_ref":  [
                    "r44"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.",
                            "label":  "Deferred Compensation Plan Assets",
                            "terseLabel":  "Value of assets for funding future payouts under the deferred compensation plan"
                            }
                        }
                    },
                "localname":  "DeferredCompensationPlanAssets",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredFederalIncomeTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r121",
                    "r386",
                    "r389"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredForeignIncomeTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r121",
                    "r386",
                    "r389"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredIncomeTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r110",
                    "r121",
                    "r386",
                    "r389"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_IncomeTaxExpenseBenefit",
                        "weight":  1.0
                        },
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "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",
                            "verboseLabel":  "Deferred income tax provision (benefit)"
                            }
                        }
                    },
                "localname":  "DeferredIncomeTaxExpenseBenefit",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]",
                            "terseLabel":  "Deferred:"
                            }
                        }
                    },
                "localname":  "DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DeferredIncomeTaxLiabilities":  {
                "auth_ref":  [
                    "r25",
                    "r26",
                    "r377",
                    "r468",
                    "r479"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_DeferredTaxLiabilities",
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredIncomeTaxLiabilitiesNet":  {
                "auth_ref":  [
                    "r363",
                    "r379"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_LiabilitiesAndStockholdersEquity",
                        "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 income taxes"
                            }
                        }
                    },
                "localname":  "DeferredIncomeTaxLiabilitiesNet",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r121",
                    "r386",
                    "r389"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsGross":  {
                "auth_ref":  [
                    "r378"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_DeferredTaxLiabilities",
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsInventory":  {
                "auth_ref":  [
                    "r358",
                    "r383",
                    "r384"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  2.0,
                        "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 inventory.",
                            "label":  "Deferred Tax Assets, Inventory",
                            "terseLabel":  "Inventory costs capitalized for tax purposes"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsInventory",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsOperatingLossCarryforwards":  {
                "auth_ref":  [
                    "r357",
                    "r383",
                    "r384"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "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 operating loss carryforwards.",
                            "label":  "Deferred Tax Assets, Operating Loss Carryforwards",
                            "terseLabel":  "Net operating loss carryforwards"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsOperatingLossCarryforwards",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsTaxCreditCarryforwards":  {
                "auth_ref":  [
                    "r381",
                    "r383",
                    "r384"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_DeferredTaxAssetsGross",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.",
                            "label":  "Deferred Tax Assets, Tax Credit Carryforwards",
                            "terseLabel":  "Tax credits carryforwards"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsTaxCreditCarryforwards",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions":  {
                "auth_ref":  [
                    "r383"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from pension benefits.",
                            "label":  "Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions",
                            "terseLabel":  "Deferred tax assets in accumulated other comprehensive loss, pension liabilities"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityAccumulatedOtherComprehensiveLossDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost":  {
                "auth_ref":  [
                    "r357",
                    "r383",
                    "r384"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "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 temporary differences from share-based compensation.",
                            "label":  "Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost",
                            "terseLabel":  "Share-based compensation"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities":  {
                "auth_ref":  [
                    "r357",
                    "r383",
                    "r384"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "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 accrued liabilities.",
                            "label":  "Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities",
                            "terseLabel":  "Accrued expenses not currently deductible for tax"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts":  {
                "auth_ref":  [
                    "r357",
                    "r383",
                    "r384"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  4.0,
                        "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 the allowance for doubtful accounts.",
                            "label":  "Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts",
                            "terseLabel":  "Allowance for doubtful accounts"
                            }
                        }
                    },
                "localname":  "DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxLiabilities":  {
                "auth_ref":  [
                    "r363",
                    "r379"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.",
                            "label":  "Deferred Tax Liabilities, Net",
                            "negatedTotalLabel":  "Net deferred tax liabilities"
                            }
                        }
                    },
                "localname":  "DeferredTaxLiabilities",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets":  {
                "auth_ref":  [
                    "r358",
                    "r383",
                    "r384"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_DeferredIncomeTaxLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of deferred tax liability attributable to taxable temporary differences from intangible assets including goodwill.",
                            "label":  "Deferred Tax Liabilities, Goodwill and Intangible Assets",
                            "negatedLabel":  "Goodwill and other intangible assets"
                            }
                        }
                    },
                "localname":  "DeferredTaxLiabilitiesGoodwillAndIntangibleAssets",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxLiabilitiesOther":  {
                "auth_ref":  [
                    "r358",
                    "r383",
                    "r384"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment":  {
                "auth_ref":  [
                    "r358",
                    "r383",
                    "r384"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_DeferredIncomeTaxLiabilities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.",
                            "label":  "Deferred Tax Liabilities, Property, Plant and Equipment",
                            "negatedLabel":  "Property, plant and equipment, net"
                            }
                        }
                    },
                "localname":  "DeferredTaxLiabilitiesPropertyPlantAndEquipment",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation":  {
                "auth_ref":  [
                    "r295"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.",
                            "label":  "Defined Benefit Plan, Accumulated Benefit Obligation",
                            "terseLabel":  "Accumulated benefit obligation"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanAccumulatedBenefitObligation",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax":  {
                "auth_ref":  [
                    "r65",
                    "r69"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).",
                            "label":  "Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax",
                            "terseLabel":  "Accumulated other comprehensive loss",
                            "totalLabel":  "Accumulated other comprehensive loss"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]",
                            "terseLabel":  "Items not yet recognized as component of net periodic pension expense"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax":  {
                "auth_ref":  [
                    "r69",
                    "r305"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.",
                            "label":  "Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Gains (Losses), before Tax",
                            "negatedLabel":  "Unrecognized net actuarial losses"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax":  {
                "auth_ref":  [
                    "r69",
                    "r305"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).",
                            "label":  "Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax",
                            "terseLabel":  "Unamortized prior service cost"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets":  {
                "auth_ref":  [
                    "r288",
                    "r324"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.",
                            "label":  "Defined Benefit Plan, Actual Return on Plan Assets",
                            "terseLabel":  "Actual return on plan assets"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanActualReturnOnPlanAssets",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanActuarialGainLoss":  {
                "auth_ref":  [
                    "r284"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan.  Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.",
                            "label":  "Defined Benefit Plan, Actuarial Gain (Loss)",
                            "negatedLabel":  "Actuarial loss (gain)"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanActuarialGainLoss",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses":  {
                "auth_ref":  [
                    "r302",
                    "r320",
                    "r324"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.",
                            "label":  "Defined Benefit Plan, Amortization of Gains (Losses)",
                            "negatedLabel":  "Amortization of net loss"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanAmortizationOfGainsLosses",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit":  {
                "auth_ref":  [
                    "r303",
                    "r321",
                    "r324"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan.",
                            "label":  "Defined Benefit Plan, Amortization of Prior Service Cost (Credit)",
                            "terseLabel":  "Prior service (credit) cost"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanAmortizationOfPriorServiceCostCredit",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet":  {
                "auth_ref":  [
                    "r279",
                    "r290"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.",
                            "label":  "Defined Benefit Plan, Amounts Recognized in Balance Sheet",
                            "totalLabel":  "Net amount recognized"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanAmountsRecognizedInBalanceSheet",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]",
                            "terseLabel":  "Amounts recognized in the statement of financial position"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate":  {
                "auth_ref":  [
                    "r306"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.",
                            "label":  "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate",
                            "terseLabel":  "Discount rate (as a percent)"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease":  {
                "auth_ref":  [
                    "r307"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan.  Plan includes, but is not limited to, pay-related defined benefit plan.",
                            "label":  "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase",
                            "terseLabel":  "Rate of compensation increase (as a percent)"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate":  {
                "auth_ref":  [
                    "r306"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.",
                            "label":  "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate",
                            "terseLabel":  "Discount rate (as a percent)"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets":  {
                "auth_ref":  [
                    "r308"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.",
                            "label":  "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets",
                            "terseLabel":  "Expected long-term rate of return on plan assets (as a percent)"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease":  {
                "auth_ref":  [
                    "r307"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan.  Plan includes, but is not limited to, pay-related defined benefit plan.",
                            "label":  "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase",
                            "terseLabel":  "Rate of compensation increase (as a percent)"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_DefinedBenefitPlanBenefitObligation":  {
                "auth_ref":  [
                    "r281"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_DefinedBenefitPlanFundedStatusOfPlan",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.",
                            "label":  "Defined Benefit Plan, Benefit Obligation",
                            "periodEndLabel":  "Benefit obligation at end of year",
                            "periodStartLabel":  "Benefit obligation at beginning of year",
                            "verboseLabel":  "Projected benefit obligation"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanBenefitObligation",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsDefinedBenefitPlanTerminationDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid":  {
                "auth_ref":  [
                    "r285",
                    "r325"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of payment to participant of defined benefit plan which decreases benefit obligation.  For pension plan, payment includes, but is not limited to, pension benefits and death benefits.  For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.",
                            "label":  "Defined Benefit Plan, Benefits Paid",
                            "negatedLabel":  "Benefits paid"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanBenefitObligationBenefitsPaid",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis":  {
                "auth_ref":  [
                    "r293",
                    "r294",
                    "r309",
                    "r324"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by defined benefit plan asset investment.",
                            "label":  "Defined Benefit Plan, Asset Categories [Axis]"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanByPlanAssetCategoriesAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember":  {
                "auth_ref":  [
                    "r293"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Cash and cash equivalent in which defined benefit plan asset is invested.",
                            "label":  "Defined Benefit Plan Cash And Cash Equivalents [Member]",
                            "terseLabel":  "Cash and cash equivalents"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanCashAndCashEquivalentsMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward":  {
                "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":  "Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]",
                            "terseLabel":  "Change in benefit obligation"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanChangeInBenefitObligationRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward":  {
                "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":  "Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]",
                            "terseLabel":  "Change in plan assets"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DefinedBenefitPlanContributionsByEmployer":  {
                "auth_ref":  [
                    "r289",
                    "r293",
                    "r294",
                    "r323",
                    "r324"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of contribution received by defined benefit plan from employer which increases plan assets.",
                            "label":  "Defined Benefit Plan, Contributions by Employer",
                            "terseLabel":  "Employer contributions"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanContributionsByEmployer",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanDebtSecurityMember":  {
                "auth_ref":  [
                    "r293"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Debt instrument issued by corporation, government and governmental agency, municipality, and other institution; in which defined benefit plan asset is invested.",
                            "label":  "Defined Benefit Plan Debt Security [Member]",
                            "terseLabel":  "Debt securities"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanDebtSecurityMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_DefinedBenefitPlanDisclosureLineItems":  {
                "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":  "Defined Benefit Plan Disclosure [Line Items]",
                            "terseLabel":  "Employee Benefits"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanDisclosureLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsDefinedBenefitPlanTerminationDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DefinedBenefitPlanEquitySecuritiesMember":  {
                "auth_ref":  [
                    "r293",
                    "r324"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Security representing ownership in corporation or other legal entity for which ownership is represented by share of stock, in which defined benefit plan asset is invested.  Includes, but is not limited to, common stock, preferred stock, convertible security, stock right and stock warrant.",
                            "label":  "Defined Benefit Plan Equity Securities [Member]",
                            "terseLabel":  "Equity securities"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanEquitySecuritiesMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]",
                            "terseLabel":  "Summary of benefit payments under the Company's various defined benefit plans, which reflect expected future employee service, as appropriate, expected to be paid in the future periods"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter":  {
                "auth_ref":  [
                    "r296"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.",
                            "label":  "Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter",
                            "terseLabel":  "2025-2029"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths":  {
                "auth_ref":  [
                    "r296"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.",
                            "label":  "Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months",
                            "terseLabel":  "2020"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive":  {
                "auth_ref":  [
                    "r296"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year.",
                            "label":  "Defined Benefit Plan, Expected Future Benefit Payments, Year Five",
                            "terseLabel":  "2024"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour":  {
                "auth_ref":  [
                    "r296"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year.",
                            "label":  "Defined Benefit Plan, Expected Future Benefit Payments, Year Four",
                            "terseLabel":  "2023"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree":  {
                "auth_ref":  [
                    "r296"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year.",
                            "label":  "Defined Benefit Plan, Expected Future Benefit Payments, Year Three",
                            "terseLabel":  "2022"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo":  {
                "auth_ref":  [
                    "r296"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year.",
                            "label":  "Defined Benefit Plan, Expected Future Benefit Payments, Year Two",
                            "terseLabel":  "2021"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear":  {
                "auth_ref":  [
                    "r297"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year.",
                            "label":  "Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year",
                            "terseLabel":  "Expected employer contributions during 2020"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets":  {
                "auth_ref":  [
                    "r301",
                    "r319",
                    "r324"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.",
                            "label":  "Defined Benefit Plan, Expected Return on Plan Assets",
                            "negatedLabel":  "Expected return on plan assets"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanExpectedReturnOnPlanAssets",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanFairValueOfPlanAssets":  {
                "auth_ref":  [
                    "r287",
                    "r293",
                    "r294",
                    "r324"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        },
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_DefinedBenefitPlanFundedStatusOfPlan",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of asset segregated and restricted to provide benefit under defined benefit plan.  Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.",
                            "label":  "Defined Benefit Plan, Fair Value of Plan Assets",
                            "periodEndLabel":  "Fair value of plan assets at end of year",
                            "periodStartLabel":  "Fair value of plan assets at beginning of year",
                            "totalLabel":  "Total investments at fair value",
                            "verboseLabel":  "Fair value of plan assets"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanFairValueOfPlanAssets",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsDefinedBenefitPlanTerminationDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanFundedStatusOfPlan":  {
                "auth_ref":  [
                    "r279",
                    "r290"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation.  Includes, but is not limited to, overfunded (underfunded) status.",
                            "label":  "Defined Benefit Plan, Funded Status of Plan",
                            "totalLabel":  "Funded status of the plans"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanFundedStatusOfPlan",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Defined Benefit Plan, Funded Status of Plan [Abstract]",
                            "terseLabel":  "Funded status"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanFundedStatusOfPlanAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DefinedBenefitPlanInterestCost":  {
                "auth_ref":  [
                    "r283",
                    "r300",
                    "r318",
                    "r324"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of cost recognized for passage of time related to defined benefit plan.",
                            "label":  "Defined Benefit Plan, Interest Cost",
                            "terseLabel":  "Interest cost"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanInterestCost",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost":  {
                "auth_ref":  [
                    "r298",
                    "r316",
                    "r324"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of net periodic benefit cost (credit) for defined benefit plan.",
                            "label":  "Defined Benefit Plan, Net Periodic Benefit Cost",
                            "totalLabel":  "Net periodic benefit cost"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanNetPeriodicBenefitCost",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]",
                            "terseLabel":  "Components of net periodic benefit cost"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanNetPeriodicBenefitCostAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]",
                            "terseLabel":  "Information for defined benefit plans with an accumulated benefit obligation and projected benefit obligation in excess of plan assets"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation":  {
                "auth_ref":  [
                    "r312",
                    "r313",
                    "r324"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets.",
                            "label":  "Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Accumulated Benefit Obligation",
                            "terseLabel":  "Accumulated benefit obligation"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets":  {
                "auth_ref":  [
                    "r312",
                    "r313",
                    "r324"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of plan asset for defined benefit plan with accumulated benefit obligation in excess of plan assets.",
                            "label":  "Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Fair Value of Plan Assets",
                            "terseLabel":  "Fair value of plan assets"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation":  {
                "auth_ref":  [
                    "r312",
                    "r324"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of projected benefit obligation for defined benefit pension plan with accumulated benefit obligation in excess of plan assets.",
                            "label":  "Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Projected Benefit Obligation",
                            "terseLabel":  "Projected benefit obligation"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanPlanAmendments":  {
                "auth_ref":  [
                    "r286"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of increase (decrease) in benefit obligation of defined benefit plan from change in terms of existing plan or initiation of new plan.",
                            "label":  "Defined Benefit Plan, Plan Amendments",
                            "terseLabel":  "Plan amendments"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanPlanAmendments",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1":  {
                "auth_ref":  [
                    "r304",
                    "r322"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of gain (loss) recognized in net periodic benefit (cost) credit from settlement and curtailment.",
                            "label":  "Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments",
                            "negatedLabel":  "Settlement loss"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanServiceCost":  {
                "auth_ref":  [
                    "r282",
                    "r299",
                    "r317",
                    "r324"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.",
                            "label":  "Defined Benefit Plan, Service Cost",
                            "terseLabel":  "Service cost"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanServiceCost",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations":  {
                "auth_ref":  [
                    "r292"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Percentage of actual investment allocation to total plan assets.  Includes, but is not limited to, percentage on weighted-average basis if more than one plan.",
                            "label":  "Defined Benefit Plan, Actual Plan Asset Allocations",
                            "terseLabel":  "Weighted-average asset allocations (as a percent)"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanWeightedAverageAssetAllocations",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]",
                            "terseLabel":  "Weighted average assumptions to determine benefit obligations"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]",
                            "terseLabel":  "Weighted average assumptions to determine net cost"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable":  {
                "auth_ref":  [
                    "r310",
                    "r311",
                    "r314",
                    "r315",
                    "r324"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Disclosures and provisions pertaining to defined benefit pension plans or other postretirement defined benefit plans.  The arrangements are generally based on terms and conditions stipulated by the entity, and which contain a promise by the employer to pay certain amounts or awards at designated future dates, including a period after retirement, upon compliance with stipulated requirements.  Excludes disclosures pertaining to defined contribution plans.",
                            "label":  "Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table]"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems":  {
                "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":  "Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]",
                            "terseLabel":  "Employee Benefits"
                            }
                        }
                    },
                "localname":  "DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]",
                            "terseLabel":  "Defined Contribution Plans"
                            }
                        }
                    },
                "localname":  "DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsDefinedContributionPlanInformationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DepreciationDepletionAndAmortization":  {
                "auth_ref":  [
                    "r110",
                    "r168"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  1.0
                        },
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_CostsAndExpenses",
                        "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",
                            "verboseLabel":  "Depreciation and amortization expense"
                            }
                        }
                    },
                "localname":  "DepreciationDepletionAndAmortization",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_DisaggregationOfRevenueAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Disaggregation of Revenue [Abstract]",
                            "terseLabel":  "Revenue Recognition"
                            }
                        }
                    },
                "localname":  "DisaggregationOfRevenueAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionShareBasedCompensationAndForeignCurrenciesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DisaggregationOfRevenueLineItems":  {
                "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":  "Disaggregation of Revenue [Line Items]",
                            "terseLabel":  "Revenue Disaggregation"
                            }
                        }
                    },
                "localname":  "DisaggregationOfRevenueLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureRevenuesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DisaggregationOfRevenueTable":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Disclosure of information about disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.",
                            "label":  "Disaggregation of Revenue [Table]"
                            }
                        }
                    },
                "localname":  "DisaggregationOfRevenueTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureRevenuesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DisaggregationOfRevenueTableTextBlock":  {
                "auth_ref":  [
                    "r269"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.",
                            "label":  "Disaggregation of Revenue [Table Text Block]",
                            "terseLabel":  "Schedule of disaggregation of revenue"
                            }
                        }
                    },
                "localname":  "DisaggregationOfRevenueTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureRevenuesTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock":  {
                "auth_ref":  [
                    "r355"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The entire disclosure for share-based payment arrangement.",
                            "label":  "Disclosure of Compensation Related Costs, Share-based Payments [Text Block]",
                            "terseLabel":  "Stock-Based Compensation Plans"
                            }
                        }
                    },
                "localname":  "DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlans"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Stock-Based Compensation Plans"
                            }
                        }
                    },
                "localname":  "DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_DisclosureOfRepurchaseAgreementsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Disclosure of Repurchase Agreements [Abstract]",
                            "terseLabel":  "Share Repurchase Plan"
                            }
                        }
                    },
                "localname":  "DisclosureOfRepurchaseAgreementsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityShareRepurchasePlanPreferredStockDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_EarningsPerShareAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Earnings Per Share",
                            "terseLabel":  "Earnings per share attributable to Reliance stockholders:"
                            }
                        }
                    },
                "localname":  "EarningsPerShareAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_EarningsPerShareBasic":  {
                "auth_ref":  [
                    "r85",
                    "r132",
                    "r140",
                    "r142",
                    "r143",
                    "r144",
                    "r147",
                    "r476",
                    "r490"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.",
                            "label":  "Earnings Per Share, Basic",
                            "terseLabel":  "Basic earnings per common share (in dollars per share)",
                            "verboseLabel":  "Earnings per share attributable to Reliance stockholders - basic (in dollars per share)"
                            }
                        }
                    },
                "localname":  "EarningsPerShareBasic",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEarningsPerShareDetails",
                    "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnauditedDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_EarningsPerShareDiluted":  {
                "auth_ref":  [
                    "r85",
                    "r132",
                    "r140",
                    "r142",
                    "r143",
                    "r144",
                    "r147",
                    "r476",
                    "r490"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The amount of net income (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, Diluted",
                            "terseLabel":  "Diluted earnings per common share (in dollars per share)",
                            "verboseLabel":  "Earnings per share attributable to Reliance stockholders - diluted (in dollars per share)"
                            }
                        }
                    },
                "localname":  "EarningsPerShareDiluted",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEarningsPerShareDetails",
                    "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnauditedDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_EarningsPerShareTextBlock":  {
                "auth_ref":  [
                    "r148"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The entire disclosure for earnings per share.",
                            "label":  "Earnings Per Share [Text Block]",
                            "terseLabel":  "Earnings Per Share"
                            }
                        }
                    },
                "localname":  "EarningsPerShareTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEarningsPerShare"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents":  {
                "auth_ref":  [
                    "r436"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "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 and cash equivalents"
                            }
                        }
                    },
                "localname":  "EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_EffectOfLIFOInventoryLiquidationOnIncome":  {
                "auth_ref":  [
                    "r201"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The effect of liquidating LIFO (last in first out) inventory layers on income.",
                            "label":  "Effect of LIFO Inventory Liquidation on Income",
                            "negatedLabel":  "Liquidation of LIFO inventory quantities that decreased cost of sales"
                            }
                        }
                    },
                "localname":  "EffectOfLIFOInventoryLiquidationOnIncome",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureInventoriesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_EffectiveIncomeTaxRateContinuingOperations":  {
                "auth_ref":  [
                    "r124",
                    "r364",
                    "r365"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.",
                            "label":  "Effective Income Tax Rate Reconciliation, Percent",
                            "totalLabel":  "Effective tax rate (as a percent)"
                            }
                        }
                    },
                "localname":  "EffectiveIncomeTaxRateContinuingOperations",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Effective Income Tax Rate Reconciliation, Percent [Abstract]",
                            "terseLabel":  "Reconciliation of income tax at the U.S. federal statutory tax rates to income tax expense"
                            }
                        }
                    },
                "localname":  "EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate":  {
                "auth_ref":  [
                    "r364",
                    "r365",
                    "r388"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_EffectiveIncomeTaxRateContinuingOperations",
                        "weight":  1.0
                        }
                    },
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Percentage of domestic federal statutory tax rate applicable to pretax income (loss).",
                            "label":  "Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent",
                            "terseLabel":  "Income tax at U.S. federal statutory tax rate (as a percent)",
                            "verboseLabel":  "U.S. federal statutory tax rate (as a percent)"
                            }
                        }
                    },
                "localname":  "EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesIncomeTaxesDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate":  {
                "auth_ref":  [
                    "r364",
                    "r365",
                    "r388"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_EffectiveIncomeTaxRateContinuingOperations",
                        "weight":  1.0
                        }
                    },
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Percentage 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 changes in the income tax rates.",
                            "label":  "Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent",
                            "terseLabel":  "Tax Reform (as a percent)"
                            }
                        }
                    },
                "localname":  "EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities":  {
                "auth_ref":  [
                    "r364",
                    "r365",
                    "r388"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  8.0,
                        "parentTag":  "us-gaap_EffectiveIncomeTaxRateContinuingOperations",
                        "weight":  -1.0
                        }
                    },
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Percentage 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 deduction for qualified production activity.",
                            "label":  "Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Percent",
                            "negatedLabel":  "Domestic production activity deduction (as a percent)"
                            }
                        }
                    },
                "localname":  "EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_EffectiveIncomeTaxRateReconciliationDispositionOfAssets":  {
                "auth_ref":  [
                    "r364",
                    "r388"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  9.0,
                        "parentTag":  "us-gaap_EffectiveIncomeTaxRateContinuingOperations",
                        "weight":  1.0
                        }
                    },
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to disposition of asset.  Includes, but is not limited to, intra-entity transfer of asset other than inventory.",
                            "label":  "Effective Income Tax Rate Reconciliation, Disposition of Asset, Percent",
                            "terseLabel":  "Loss on sale of assets (as a percent)"
                            }
                        }
                    },
                "localname":  "EffectiveIncomeTaxRateReconciliationDispositionOfAssets",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential":  {
                "auth_ref":  [
                    "r364",
                    "r365",
                    "r388"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_EffectiveIncomeTaxRateContinuingOperations",
                        "weight":  1.0
                        }
                    },
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Percentage 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 applicable to statutory income tax expense (benefit) outside of the country of domicile.",
                            "label":  "Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent",
                            "terseLabel":  "Foreign earnings taxed at higher (lower) rates (as a percent)"
                            }
                        }
                    },
                "localname":  "EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseLifeInsurance":  {
                "auth_ref":  [
                    "r364",
                    "r365",
                    "r388"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_EffectiveIncomeTaxRateContinuingOperations",
                        "weight":  -1.0
                        }
                    },
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Percentage 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 life insurance expense.",
                            "label":  "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Life Insurance, Percent",
                            "negatedLabel":  "Net effect of life insurance policies (as a percent)"
                            }
                        }
                    },
                "localname":  "EffectiveIncomeTaxRateReconciliationNondeductibleExpenseLifeInsurance",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost":  {
                "auth_ref":  [
                    "r364",
                    "r365",
                    "r388"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  7.0,
                        "parentTag":  "us-gaap_EffectiveIncomeTaxRateContinuingOperations",
                        "weight":  1.0
                        }
                    },
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Percentage of difference between reported income tax expense (benefit) and 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 share-based payment arrangement.",
                            "label":  "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent",
                            "terseLabel":  "Stock-based compensation (as a percent)"
                            }
                        }
                    },
                "localname":  "EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments":  {
                "auth_ref":  [
                    "r364",
                    "r365",
                    "r388"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  10.0,
                        "parentTag":  "us-gaap_EffectiveIncomeTaxRateContinuingOperations",
                        "weight":  1.0
                        }
                    },
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Percentage 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, Percent",
                            "terseLabel":  "Other, net (as a percent)"
                            }
                        }
                    },
                "localname":  "EffectiveIncomeTaxRateReconciliationOtherAdjustments",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes":  {
                "auth_ref":  [
                    "r364",
                    "r365",
                    "r388"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_EffectiveIncomeTaxRateContinuingOperations",
                        "weight":  1.0
                        }
                    },
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Percentage 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 applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).",
                            "label":  "Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent",
                            "terseLabel":  "State income tax, net of federal tax effect (as a percent)"
                            }
                        }
                    },
                "localname":  "EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies":  {
                "auth_ref":  [
                    "r364",
                    "r365",
                    "r388"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_EffectiveIncomeTaxRateContinuingOperations",
                        "weight":  1.0
                        }
                    },
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Percentage 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 income tax contingencies.  Includes, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.",
                            "label":  "Effective Income Tax Rate Reconciliation, Tax Contingency, Percent",
                            "terseLabel":  "Net effect of changes in unrecognized tax benefits (as a percent)"
                            }
                        }
                    },
                "localname":  "EffectiveIncomeTaxRateReconciliationTaxContingencies",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_EmployeeRelatedLiabilitiesCurrent":  {
                "auth_ref":  [
                    "r47"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_LiabilitiesCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits.  Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
                            "label":  "Employee-related Liabilities, Current",
                            "terseLabel":  "Accrued compensation and retirement costs"
                            }
                        }
                    },
                "localname":  "EmployeeRelatedLiabilitiesCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized":  {
                "auth_ref":  [
                    "r352"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of cost not yet recognized for nonvested award under share-based payment arrangement.",
                            "label":  "Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized",
                            "terseLabel":  "Total unrecognized compensation cost"
                            }
                        }
                    },
                "localname":  "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1":  {
                "auth_ref":  [
                    "r352"
                    ],
                "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":  "Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition",
                            "terseLabel":  "Weighted average recognition period for unrecognized compensation cost (in years)"
                            }
                        }
                    },
                "localname":  "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_EmployeeStockOptionMember":  {
                "auth_ref":  [
                    "r351"
                    ],
                "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":  "Employee Stock Option [Member]",
                            "terseLabel":  "Stock options"
                            }
                        }
                    },
                "localname":  "EmployeeStockOptionMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansOutstandingAndExercisableOptionsDetails",
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_EnvironmentalCostsPolicy":  {
                "auth_ref":  [
                    "r119",
                    "r238",
                    "r239",
                    "r240",
                    "r241"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for obligations that resulted from improper or other-than normal operation of a long-lived asset in the past.  This accounting policy may address (1) whether the related remediation costs are expensed or capitalized, (2) whether the obligation is measured on a discounted basis, (3) the event, situation, or set of circumstances that generally triggers recognition of loss contingencies arising from the entity's environmental remediation-related obligations, and (4) the timing of recognition of any recoveries.",
                            "label":  "Environmental Costs, Policy [Policy Text Block]",
                            "terseLabel":  "Environmental Remediation Costs"
                            }
                        }
                    },
                "localname":  "EnvironmentalCostsPolicy",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_EquityComponentDomain":  {
                "auth_ref":  [
                    "r261"
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityAccumulatedOtherComprehensiveLossDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_EquityMethodInvestmentOwnershipPercentage":  {
                "auth_ref":  [
                    "r183"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.",
                            "label":  "Equity Method Investment, Ownership Percentage",
                            "verboseLabel":  "Ownership percentage in equity method investment"
                            }
                        }
                    },
                "localname":  "EquityMethodInvestmentOwnershipPercentage",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_FIFOInventoryAmount":  {
                "auth_ref":  [
                    "r11"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureInventoriesDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_InventoryNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The amount of FIFO (first in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.",
                            "label":  "FIFO Inventory Amount",
                            "terseLabel":  "Inventories - stated on FIFO method"
                            }
                        }
                    },
                "localname":  "FIFOInventoryAmount",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureInventoriesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FairValueByFairValueHierarchyLevelAxis":  {
                "auth_ref":  [
                    "r293",
                    "r294",
                    "r324",
                    "r427",
                    "r460"
                    ],
                "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 [Axis]"
                            }
                        }
                    },
                "localname":  "FairValueByFairValueHierarchyLevelAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_FairValueInputsLevel1Member":  {
                "auth_ref":  [
                    "r293",
                    "r294",
                    "r324",
                    "r427",
                    "r461"
                    ],
                "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 Level1 [Member]",
                            "terseLabel":  "Level 1"
                            }
                        }
                    },
                "localname":  "FairValueInputsLevel1Member",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_FairValueInputsLevel2Member":  {
                "auth_ref":  [
                    "r293",
                    "r294",
                    "r324",
                    "r427",
                    "r462"
                    ],
                "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 Level2 [Member]",
                            "terseLabel":  "Level 2"
                            }
                        }
                    },
                "localname":  "FairValueInputsLevel2Member",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_FairValueMeasurementsFairValueHierarchyDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Categories used to prioritize the inputs to valuation techniques to measure fair value.",
                            "label":  "Fair Value Measurements Fair Value Hierarchy [Domain]",
                            "terseLabel":  "Fair Value Hierarchy [Domain]"
                            }
                        }
                    },
                "localname":  "FairValueMeasurementsFairValueHierarchyDomain",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_FairValueOfFinancialInstrumentsPolicy":  {
                "auth_ref":  [
                    "r119",
                    "r428",
                    "r429"
                    ],
                "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 Values of Financial Instruments"
                            }
                        }
                    },
                "localname":  "FairValueOfFinancialInstrumentsPolicy",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_FinancialInstrumentAxis":  {
                "auth_ref":  [
                    "r186",
                    "r188",
                    "r189",
                    "r190",
                    "r191",
                    "r192",
                    "r193",
                    "r194",
                    "r195"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by type of financial instrument.",
                            "label":  "Financial Instrument [Axis]"
                            }
                        }
                    },
                "localname":  "FinancialInstrumentAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails"
                    ],
                "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 amortizable life in years"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetUsefulLife",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization":  {
                "auth_ref":  [
                    "r225"
                    ],
                "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",
                            "negatedLabel":  "Intangible assets subject to amortization, Accumulated Amortization"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsAccumulatedAmortization",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths":  {
                "auth_ref":  [
                    "r227"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months",
                            "terseLabel":  "2020"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive":  {
                "auth_ref":  [
                    "r227"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Finite-Lived Intangible Assets, Amortization Expense, Year Five",
                            "terseLabel":  "2024"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsAmortizationExpenseYearFive",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour":  {
                "auth_ref":  [
                    "r227"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Finite-Lived Intangible Assets, Amortization Expense, Year Four",
                            "terseLabel":  "2023"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsAmortizationExpenseYearFour",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree":  {
                "auth_ref":  [
                    "r227"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Finite-Lived Intangible Assets, Amortization Expense, Year Three",
                            "terseLabel":  "2022"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsAmortizationExpenseYearThree",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo":  {
                "auth_ref":  [
                    "r227"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Finite-Lived Intangible Assets, Amortization Expense, Year Two",
                            "terseLabel":  "2021"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis":  {
                "auth_ref":  [
                    "r218",
                    "r222",
                    "r225",
                    "r229",
                    "r464"
                    ],
                "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]"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsByMajorClassAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]",
                            "verboseLabel":  "Summary of estimated aggregate amortization expense for each of the succeeding five years"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsGross":  {
                "auth_ref":  [
                    "r225",
                    "r464"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_IntangibleAssetsGrossExcludingGoodwill",
                        "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":  "Intangible assets subject to amortization, Gross Carrying Amount"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsGross",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain":  {
                "auth_ref":  [
                    "r218",
                    "r224"
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_FiniteLivedIntangibleAssetsNetAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Finite-Lived Intangible Assets, Net [Abstract]",
                            "terseLabel":  "Intangible assets subject to amortization:"
                            }
                        }
                    },
                "localname":  "FiniteLivedIntangibleAssetsNetAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_FinitelivedIntangibleAssetsAcquired1":  {
                "auth_ref":  [
                    "r219"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.",
                            "label":  "Finite-lived Intangible Assets Acquired",
                            "verboseLabel":  "Intangible assets acquired subject to amortization"
                            }
                        }
                    },
                "localname":  "FinitelivedIntangibleAssetsAcquired1",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_FixedIncomeFundsMember":  {
                "auth_ref":  [
                    "r293"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Investment that pools funds from investors to invest in a combination of underlying investments, primarily fixed income investments.",
                            "label":  "Fixed Income Funds [Member]",
                            "terseLabel":  "Mutual funds"
                            }
                        }
                    },
                "localname":  "FixedIncomeFundsMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_ForeignCurrencyGainLossMember":  {
                "auth_ref":  [
                    "r426"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Primary financial statement caption encompassing foreign currency gain (loss).",
                            "label":  "Foreign Currency Gain Loss [Member]",
                            "terseLabel":  "Foreign currency transaction losses (gains)"
                            }
                        }
                    },
                "localname":  "ForeignCurrencyGainLossMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_ForeignCurrencyTransactionAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Foreign Currency Transaction [Abstract]",
                            "terseLabel":  "Foreign Currencies"
                            }
                        }
                    },
                "localname":  "ForeignCurrencyTransactionAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionShareBasedCompensationAndForeignCurrenciesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ForeignCurrencyTransactionGainLossBeforeTax":  {
                "auth_ref":  [
                    "r433",
                    "r434",
                    "r435"
                    ],
                "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":  "Net gain (loss) resulting from foreign currency transactions"
                            }
                        }
                    },
                "localname":  "ForeignCurrencyTransactionGainLossBeforeTax",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionShareBasedCompensationAndForeignCurrenciesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock":  {
                "auth_ref":  [
                    "r119",
                    "r435",
                    "r438"
                    ],
                "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 Currencies"
                            }
                        }
                    },
                "localname":  "ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_GainLossOnSaleOfPropertyPlantEquipment":  {
                "auth_ref":  [
                    "r110"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.",
                            "label":  "Gain (Loss) on Disposition of Property Plant Equipment",
                            "negatedLabel":  "Gain on sales of property, plant and equipment"
                            }
                        }
                    },
                "localname":  "GainLossOnSaleOfPropertyPlantEquipment",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_Goodwill":  {
                "auth_ref":  [
                    "r203",
                    "r205"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets",
                        "weight":  1.0
                        },
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  4.0,
                        "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":  "Balance at the end of the year",
                            "periodStartLabel":  "Balance at the beginning of the year",
                            "terseLabel":  "Goodwill"
                            }
                        }
                    },
                "localname":  "Goodwill",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureGoodwillDetails",
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_GoodwillAcquiredDuringPeriod":  {
                "auth_ref":  [
                    "r207"
                    ],
                "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":  "Acquisitions"
                            }
                        }
                    },
                "localname":  "GoodwillAcquiredDuringPeriod",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureGoodwillDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Goodwill and Intangible Assets Disclosure [Abstract]",
                            "terseLabel":  "Goodwill and Other Indefinite-Lived Intangible Assets"
                            }
                        }
                    },
                "localname":  "GoodwillAndIntangibleAssetsDisclosureAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesGoodwillAndOtherIndefiniteLivedIntangibleAssetsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy":  {
                "auth_ref":  [
                    "r119",
                    "r228"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Disclosure of accounting policy for indefinite-lived intangible assets (that is, those intangible assets not subject to amortization).  This accounting policy also may address how the entity assesses whether events and circumstances continue to support an indefinite useful life and how the entity assesses and measures impairment of such assets.",
                            "label":  "Goodwill and Intangible Assets, Intangible Assets, Indefinite-Lived, Policy [Policy Text Block]",
                            "terseLabel":  "Goodwill and Other Indefinite-Lived Intangible Assets"
                            }
                        }
                    },
                "localname":  "GoodwillAndIntangibleAssetsIntangibleAssetsIndefiniteLivedPolicy",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_GoodwillDisclosureTextBlock":  {
                "auth_ref":  [
                    "r215"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The entire disclosure for goodwill.",
                            "label":  "Goodwill Disclosure [Text Block]",
                            "terseLabel":  "Goodwill"
                            }
                        }
                    },
                "localname":  "GoodwillDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureGoodwill"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_GoodwillForeignCurrencyTranslationGainLoss":  {
                "auth_ref":  [
                    "r209"
                    ],
                "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, Translation Adjustments",
                            "terseLabel":  "Foreign currency translation gains (losses)"
                            }
                        }
                    },
                "localname":  "GoodwillForeignCurrencyTranslationGainLoss",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureGoodwillDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_GoodwillImpairedAccumulatedImpairmentLoss":  {
                "auth_ref":  [
                    "r206",
                    "r211"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of accumulated impairment loss for 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, Impaired, Accumulated Impairment Loss",
                            "terseLabel":  "Accumulated impairment losses"
                            }
                        }
                    },
                "localname":  "GoodwillImpairedAccumulatedImpairmentLoss",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureGoodwillDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_GoodwillImpairmentLoss":  {
                "auth_ref":  [
                    "r110",
                    "r204",
                    "r208",
                    "r213"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of loss from the write-down 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, Impairment Loss",
                            "terseLabel":  "Impairment of goodwill"
                            }
                        }
                    },
                "localname":  "GoodwillImpairmentLoss",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesGoodwillAndOtherIndefiniteLivedIntangibleAssetsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_GoodwillPurchaseAccountingAdjustments":  {
                "auth_ref":  [
                    "r210",
                    "r394"
                    ],
                "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",
                            "terseLabel":  "Purchase price allocation adjustments"
                            }
                        }
                    },
                "localname":  "GoodwillPurchaseAccountingAdjustments",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureGoodwillDetails"
                    ],
                "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":  "Change in the carrying amount of goodwill"
                            }
                        }
                    },
                "localname":  "GoodwillRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureGoodwillDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_GrossProfit":  {
                "auth_ref":  [
                    "r89"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnauditedDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnauditedDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill":  {
                "auth_ref":  [
                    "r110",
                    "r230"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_AssetImpairmentCharges",
                        "weight":  1.0
                        }
                    },
                "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)",
                            "verboseLabel":  "Intangible assets, net"
                            }
                        }
                    },
                "localname":  "ImpairmentOfIntangibleAssetsExcludingGoodwill",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ImpairmentOfIntangibleAssetsFinitelived":  {
                "auth_ref":  [
                    "r110",
                    "r230"
                    ],
                "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 a finite-lived intangible asset to fair value.",
                            "label":  "Impairment of Intangible Assets, Finite-lived",
                            "terseLabel":  "Impairment losses of intangible assets, finite-lived"
                            }
                        }
                    },
                "localname":  "ImpairmentOfIntangibleAssetsFinitelived",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLongLivedAssetsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill":  {
                "auth_ref":  [
                    "r110",
                    "r230"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.",
                            "label":  "Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)",
                            "terseLabel":  "Impairment losses of intangible assets, indefinite-lived"
                            }
                        }
                    },
                "localname":  "ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesGoodwillAndOtherIndefiniteLivedIntangibleAssetsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic":  {
                "auth_ref":  [
                    "r123"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
                        "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":  "US"
                            }
                        }
                    },
                "localname":  "IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest":  {
                "auth_ref":  [
                    "r82",
                    "r132",
                    "r465",
                    "r475",
                    "r491"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        },
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_ProfitLoss",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.",
                            "label":  "Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest",
                            "totalLabel":  "Income before income taxes"
                            }
                        }
                    },
                "localname":  "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]",
                            "terseLabel":  "Components of U.S. and international income before income taxes"
                            }
                        }
                    },
                "localname":  "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign":  {
                "auth_ref":  [
                    "r123"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
                        "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":  "International"
                            }
                        }
                    },
                "localname":  "IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeStatementAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "CONSOLIDATED STATEMENTS OF INCOME"
                            }
                        }
                    },
                "localname":  "IncomeStatementAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_IncomeStatementLocationAxis":  {
                "auth_ref":  [
                    "r237"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by location in the income statement.",
                            "label":  "Income Statement Location [Axis]"
                            }
                        }
                    },
                "localname":  "IncomeStatementLocationAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails",
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails"
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails",
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_IncomeTaxAuthorityAxis":  {
                "auth_ref":  [
                    "r368"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by tax jurisdiction.",
                            "label":  "Income Tax Authority [Axis]"
                            }
                        }
                    },
                "localname":  "IncomeTaxAuthorityAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_IncomeTaxDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Income Taxes"
                            }
                        }
                    },
                "localname":  "IncomeTaxDisclosureAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_IncomeTaxDisclosureTextBlock":  {
                "auth_ref":  [
                    "r393"
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxes"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_IncomeTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r121",
                    "r169",
                    "r391"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        },
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_ProfitLoss",
                        "weight":  -1.0
                        }
                    },
                "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)",
                            "terseLabel":  "Income tax provision (benefit)",
                            "totalLabel":  "Income tax provision"
                            }
                        }
                    },
                "localname":  "IncomeTaxExpenseBenefit",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeTaxPolicyTextBlock":  {
                "auth_ref":  [
                    "r77",
                    "r119",
                    "r360",
                    "r361",
                    "r375",
                    "r376",
                    "r380",
                    "r392",
                    "r499"
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_IncomeTaxesPaidNet":  {
                "auth_ref":  [
                    "r114"
                    ],
                "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, net of any cash received during the current period as refunds for the overpayment of taxes.",
                            "label":  "Income Taxes Paid, Net",
                            "terseLabel":  "Income taxes paid during the year, net"
                            }
                        }
                    },
                "localname":  "IncomeTaxesPaidNet",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncomeTaxesReceivable":  {
                "auth_ref":  [
                    "r54",
                    "r473",
                    "r489"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_AssetsCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.",
                            "label":  "Income Taxes Receivable, Current",
                            "terseLabel":  "Income taxes receivable"
                            }
                        }
                    },
                "localname":  "IncomeTaxesReceivable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities":  {
                "auth_ref":  [
                    "r109"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  12.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid.",
                            "label":  "Increase (Decrease) in Accounts Payable and Accrued Liabilities",
                            "terseLabel":  "Accounts payable and other liabilities"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInAccountsPayableAndAccruedLiabilities",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInAccountsReceivable":  {
                "auth_ref":  [
                    "r109"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  9.0,
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IncreaseDecreaseInInventories":  {
                "auth_ref":  [
                    "r109"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "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 aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.",
                            "label":  "Increase (Decrease) in Inventories",
                            "negatedLabel":  "Inventories"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInInventories",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "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 (excluding effect of businesses acquired):"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInOperatingCapitalAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets":  {
                "auth_ref":  [
                    "r109"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  11.0,
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "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",
                            "verboseLabel":  "Schedule of accumulated other comprehensive loss"
                            }
                        }
                    },
                "localname":  "IncreaseDecreaseInStockholdersEquityRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityAccumulatedOtherComprehensiveLossDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements":  {
                "auth_ref":  [
                    "r141",
                    "r146"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEarningsPerShareDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding",
                        "weight":  1.0
                        }
                    },
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.",
                            "label":  "Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements",
                            "terseLabel":  "Dilutive effect of stock-based awards (in shares)"
                            }
                        }
                    },
                "localname":  "IncrementalCommonSharesAttributableToShareBasedPaymentArrangements",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEarningsPerShareDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis":  {
                "auth_ref":  [
                    "r221",
                    "r228"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by type or class of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.",
                            "label":  "Indefinite-lived Intangible Assets [Axis]"
                            }
                        }
                    },
                "localname":  "IndefiniteLivedIntangibleAssetsByMajorClassAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill":  {
                "auth_ref":  [
                    "r228"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_IntangibleAssetsGrossExcludingGoodwill",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.",
                            "label":  "Indefinite-Lived Intangible Assets (Excluding Goodwill)",
                            "terseLabel":  "Intangible assets not subject to amortization, Gross Carrying Amount"
                            }
                        }
                    },
                "localname":  "IndefiniteLivedIntangibleAssetsExcludingGoodwill",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwillAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]",
                            "terseLabel":  "Intangible assets not subject to amortization:"
                            }
                        }
                    },
                "localname":  "IndefiniteLivedIntangibleAssetsExcludingGoodwillAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain":  {
                "auth_ref":  [
                    "r221",
                    "r228"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The major class of indefinite-lived intangible asset (for example, trade names, etc. but not all-inclusive), excluding goodwill.  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 the company.",
                            "label":  "Indefinite Lived Intangible Assets Major Class Name [Domain]",
                            "terseLabel":  "Indefinite-lived Intangible Assets, Major Class Name [Domain]"
                            }
                        }
                    },
                "localname":  "IndefiniteLivedIntangibleAssetsMajorClassNameDomain",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis":  {
                "auth_ref":  [
                    "r273"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information about effect of transition method for cumulative effect in initial period of application.",
                            "label":  "Initial Application Period Cumulative Effect Transition [Axis]"
                            }
                        }
                    },
                "localname":  "InitialApplicationPeriodCumulativeEffectTransitionAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureRevenuesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Effect of transition method for cumulative effect in initial period of application.",
                            "label":  "Initial Application Period Cumulative Effect Transition [Domain]",
                            "terseLabel":  "Initial Application Period Cumulative Effect Transition [Domain]"
                            }
                        }
                    },
                "localname":  "InitialApplicationPeriodCumulativeEffectTransitionDomain",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureRevenuesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_IntangibleAssetsDisclosureTextBlock":  {
                "auth_ref":  [
                    "r231"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The entire disclosure for all or part of the information related to intangible assets.",
                            "label":  "Intangible Assets Disclosure [Text Block]",
                            "terseLabel":  "Intangible Assets, net"
                            }
                        }
                    },
                "localname":  "IntangibleAssetsDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNet"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_IntangibleAssetsGrossExcludingGoodwill":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount before accumulated amortization of intangible assets, excluding goodwill.",
                            "label":  "Intangible Assets, Gross (Excluding Goodwill)",
                            "totalLabel":  "Intangible assets, Gross Carrying Amount"
                            }
                        }
                    },
                "localname":  "IntangibleAssetsGrossExcludingGoodwill",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IntangibleAssetsNetExcludingGoodwill":  {
                "auth_ref":  [
                    "r216",
                    "r223"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  5.0,
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Intangible Assets, net",
                            "terseLabel":  "Intangibles"
                            }
                        }
                    },
                "localname":  "IntangibleAssetsNetExcludingGoodwillAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_InterestExpense":  {
                "auth_ref":  [
                    "r80",
                    "r167",
                    "r439",
                    "r442",
                    "r477"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
                        "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",
                            "verboseLabel":  "Interest"
                            }
                        }
                    },
                "localname":  "InterestExpense",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InterestExpenseMember":  {
                "auth_ref":  [
                    "r426"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Primary financial statement caption encompassing interest expense.",
                            "label":  "Interest Expense [Member]",
                            "terseLabel":  "Interest expense on life insurance policy loans"
                            }
                        }
                    },
                "localname":  "InterestExpenseMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_InterestPaidNet":  {
                "auth_ref":  [
                    "r104",
                    "r107",
                    "r114"
                    ],
                "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, Net",
                            "terseLabel":  "Interest paid during the year"
                            }
                        }
                    },
                "localname":  "InterestPaidNet",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InventoriesMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tangible personal property held for sale in the ordinary course of business, or in process of, or to be consumed in, production for sale.",
                            "label":  "Inventories [Member]",
                            "terseLabel":  "Steel Products"
                            }
                        }
                    },
                "localname":  "InventoriesMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesPurchaseCommitmentsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_InventoryAdjustments":  {
                "auth_ref":  [
                    "r57",
                    "r198"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureInventoriesDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_LIFOInventoryAmount",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of inventory reserves for last-in first-out (LIFO) and other inventory valuation methods.",
                            "label":  "Inventory Adjustments",
                            "negatedLabel":  "Cost on FIFO method higher than LIFO value"
                            }
                        }
                    },
                "localname":  "InventoryAdjustments",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureInventoriesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InventoryDisclosureTextBlock":  {
                "auth_ref":  [
                    "r202"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The entire disclosure for inventory.  Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory.",
                            "label":  "Inventory Disclosure [Text Block]",
                            "terseLabel":  "Inventories"
                            }
                        }
                    },
                "localname":  "InventoryDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureInventories"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_InventoryLIFOReservePeriodCharge":  {
                "auth_ref":  [
                    "r58",
                    "r59",
                    "r60",
                    "r200"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The change in the inventory reserve representing the cumulative difference in cost between the first in, first out and the last in, first out inventory valuation methods, which change has been reflected in the statement of income during the period.",
                            "label":  "Inventory, LIFO Reserve, Period Charge",
                            "verboseLabel":  "LIFO inventory valuation reserve adjustment (income) charge"
                            }
                        }
                    },
                "localname":  "InventoryLIFOReservePeriodCharge",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureInventoriesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InventoryNet":  {
                "auth_ref":  [
                    "r2",
                    "r56",
                    "r197"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureInventoriesDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        },
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_AssetsCurrent",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.",
                            "label":  "Inventory, Net",
                            "terseLabel":  "Inventories",
                            "totalLabel":  "Inventories"
                            }
                        }
                    },
                "localname":  "InventoryNet",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureInventoriesDetails",
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_InventoryNetAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Inventories"
                            }
                        }
                    },
                "localname":  "InventoryNetAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_InventoryPolicyTextBlock":  {
                "auth_ref":  [
                    "r11",
                    "r57",
                    "r119",
                    "r149",
                    "r198",
                    "r199"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Disclosure of inventory accounting policy for inventory classes, including, but not limited to, basis for determining inventory amounts, methods by which amounts are added and removed from inventory classes, loss recognition on impairment of inventories, and situations in which inventories are stated above cost.",
                            "label":  "Inventory, Policy [Policy Text Block]",
                            "terseLabel":  "Inventories"
                            }
                        }
                    },
                "localname":  "InventoryPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_LIFOInventoryAmount":  {
                "auth_ref":  [
                    "r11"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureInventoriesDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_InventoryNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The amount of LIFO (last in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.",
                            "label":  "LIFO Inventory Amount",
                            "totalLabel":  "Inventories - stated on LIFO method"
                            }
                        }
                    },
                "localname":  "LIFOInventoryAmount",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureInventoriesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_Land":  {
                "auth_ref":  [
                    "r7",
                    "r42"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_PropertyPlantAndEquipmentNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.",
                            "label":  "Land",
                            "terseLabel":  "Land"
                            }
                        }
                    },
                "localname":  "Land",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LeaseCostTableTextBlock":  {
                "auth_ref":  [
                    "r455"
                    ],
                "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":  "Schedule of lease cost"
                            }
                        }
                    },
                "localname":  "LeaseCostTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_LeasesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Leases"
                            }
                        }
                    },
                "localname":  "LeasesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock":  {
                "auth_ref":  [
                    "r456"
                    ],
                "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":  "Schedule of maturities of operating lease liabilities"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityMaturityTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue":  {
                "auth_ref":  [
                    "r456"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        },
                    "http://www.rsac.com/role/DisclosureLeasesDetailsCalc2":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of lessee's undiscounted obligation for lease payments for operating lease.",
                            "label":  "Lessee, Operating Lease, Liability, Payments, Due",
                            "totalLabel":  "Total operating lease payments"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityPaymentsDue",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive":  {
                "auth_ref":  [
                    "r456"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetails":  {
                        "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 payments for operating lease, due after fifth fiscal year following latest fiscal year.",
                            "label":  "Lessee, Operating Lease, Liability, Payments, Due after Year Five",
                            "terseLabel":  "Thereafter"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths":  {
                "auth_ref":  [
                    "r456"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetails":  {
                        "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 for operating lease, due in next fiscal year following latest fiscal year.",
                            "label":  "Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months",
                            "terseLabel":  "2020"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive":  {
                "auth_ref":  [
                    "r456"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetails":  {
                        "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 payments for operating lease, due in fifth fiscal year following latest fiscal year.",
                            "label":  "Lessee, Operating Lease, Liability, Payments, Due Year Five",
                            "terseLabel":  "2024"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityPaymentsDueYearFive",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour":  {
                "auth_ref":  [
                    "r456"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetails":  {
                        "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 payments for operating lease, due in fourth fiscal year following latest fiscal year.",
                            "label":  "Lessee, Operating Lease, Liability, Payments, Due Year Four",
                            "terseLabel":  "2023"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityPaymentsDueYearFour",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree":  {
                "auth_ref":  [
                    "r456"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetails":  {
                        "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 payments for operating lease, due in third fiscal year following latest fiscal year.",
                            "label":  "Lessee, Operating Lease, Liability, Payments, Due Year Three",
                            "terseLabel":  "2022"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityPaymentsDueYearThree",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo":  {
                "auth_ref":  [
                    "r456"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetails":  {
                        "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 payments for operating lease, due in second fiscal year following latest fiscal year.",
                            "label":  "Lessee, Operating Lease, Liability, Payments, Due Year Two",
                            "terseLabel":  "2021"
                            }
                        }
                    },
                "localname":  "LesseeOperatingLeaseLiabilityPaymentsDueYearTwo",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount":  {
                "auth_ref":  [
                    "r456"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetailsCalc2":  {
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LesseeOperatingLeasesTextBlock":  {
                "auth_ref":  [
                    "r458"
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeases"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_LettersOfCreditOutstandingAmount":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.",
                            "label":  "Letters of Credit Outstanding, Amount",
                            "terseLabel":  "Letters of credit outstanding"
                            }
                        }
                    },
                "localname":  "LettersOfCreditOutstandingAmount",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LiabilitiesAndStockholdersEquity":  {
                "auth_ref":  [
                    "r34",
                    "r471",
                    "r485"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "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 equity"
                            }
                        }
                    },
                "localname":  "LiabilitiesAndStockholdersEquity",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LiabilitiesAndStockholdersEquityAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Liabilities and Equity [Abstract]",
                            "terseLabel":  "LIABILITIES AND EQUITY"
                            }
                        }
                    },
                "localname":  "LiabilitiesAndStockholdersEquityAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_LiabilitiesCurrent":  {
                "auth_ref":  [
                    "r48"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_LiabilitiesAndStockholdersEquity",
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LiabilitiesCurrentAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Liabilities, Current [Abstract]",
                            "terseLabel":  "Current liabilities:"
                            }
                        }
                    },
                "localname":  "LiabilitiesCurrentAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_LiabilityForPolicyholderContractDepositsInterestRate":  {
                "auth_ref":  [
                    "r488",
                    "r493"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Rate of interest credited to policyholder deposits.",
                            "label":  "Corporate Life Insurance Guaranteed Rate",
                            "terseLabel":  "Rate at which the portion of the policy cash surrender value earns interest and dividend income (as a percent)"
                            }
                        }
                    },
                "localname":  "LiabilityForPolicyholderContractDepositsInterestRate",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNetDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_LifeInsuranceCorporateOrBankOwnedTextBlock":  {
                "auth_ref":  [
                    "r184"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The entire disclosure for corporate (COLI) or bank (BOLI) owned life insurance including the amount of cash surrender value that could be received as of the date of the statement of financial position, any restrictions on the company's ability to obtain the value of the life insurance policy on surrender, or any other additional information desired to be disclosed.",
                            "label":  "Life Insurance, Corporate or Bank Owned [Text Block]",
                            "terseLabel":  "Cash Surrender Value of Life Insurance Policies, net"
                            }
                        }
                    },
                "localname":  "LifeInsuranceCorporateOrBankOwnedTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCashSurrenderValueOfLifeInsurancePoliciesNet"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_LineOfCredit":  {
                "auth_ref":  [
                    "r23",
                    "r469",
                    "r480"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount.  Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line.  Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.",
                            "label":  "Line of Credit Facility, Amount Outstanding",
                            "verboseLabel":  "Lines of credit"
                            }
                        }
                    },
                "localname":  "LineOfCredit",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity":  {
                "auth_ref":  [
                    "r46"
                    ],
                "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 of the revolving credit facility",
                            "verboseLabel":  "Maximum borrowing capacity"
                            }
                        }
                    },
                "localname":  "LineOfCreditFacilityMaximumBorrowingCapacity",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity":  {
                "auth_ref":  [
                    "r46"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).",
                            "label":  "Line of Credit Facility, Remaining Borrowing Capacity",
                            "terseLabel":  "Available on the revolving credit facility"
                            }
                        }
                    },
                "localname":  "LineOfCreditFacilityRemainingBorrowingCapacity",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "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 unused portion of revolving credit facility (as a percent)"
                            }
                        }
                    },
                "localname":  "LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "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 L I B O R [Member]",
                            "terseLabel":  "LIBOR"
                            }
                        }
                    },
                "localname":  "LondonInterbankOfferedRateLIBORMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_LongTermDebt":  {
                "auth_ref":  [
                    "r23",
                    "r259",
                    "r469",
                    "r482"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt.  Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper.  Excludes capital lease obligations.",
                            "label":  "Long-term Debt",
                            "terseLabel":  "Carrying value"
                            }
                        }
                    },
                "localname":  "LongTermDebt",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LongTermDebtByMaturityAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Long-term Debt, Fiscal Year Maturity [Abstract]",
                            "terseLabel":  "Aggregate maturities of long-term debt for each of the next five years and thereafter"
                            }
                        }
                    },
                "localname":  "LongTermDebtByMaturityAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_LongTermDebtFairValue":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure.  Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.  The element may be used in both the balance sheet and disclosure in the same submission.",
                            "label":  "Long-term Debt, Fair Value",
                            "terseLabel":  "Fair value"
                            }
                        }
                    },
                "localname":  "LongTermDebtFairValue",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive":  {
                "auth_ref":  [
                    "r127",
                    "r255"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_DebtLongtermAndShorttermCombinedAmount",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Long-term Debt, Maturities, Repayments of Principal after Year Five",
                            "terseLabel":  "Thereafter"
                            }
                        }
                    },
                "localname":  "LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths":  {
                "auth_ref":  [
                    "r127",
                    "r255"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_DebtLongtermAndShorttermCombinedAmount",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months",
                            "terseLabel":  "2020"
                            }
                        }
                    },
                "localname":  "LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive":  {
                "auth_ref":  [
                    "r127",
                    "r255"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_DebtLongtermAndShorttermCombinedAmount",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Long-term Debt, Maturities, Repayments of Principal in Year Five",
                            "terseLabel":  "2024"
                            }
                        }
                    },
                "localname":  "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour":  {
                "auth_ref":  [
                    "r127",
                    "r255"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_DebtLongtermAndShorttermCombinedAmount",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Long-term Debt, Maturities, Repayments of Principal in Year Four",
                            "terseLabel":  "2023"
                            }
                        }
                    },
                "localname":  "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree":  {
                "auth_ref":  [
                    "r127",
                    "r255"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_DebtLongtermAndShorttermCombinedAmount",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Long-term Debt, Maturities, Repayments of Principal in Year Three",
                            "terseLabel":  "2022"
                            }
                        }
                    },
                "localname":  "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo":  {
                "auth_ref":  [
                    "r127",
                    "r255"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_DebtLongtermAndShorttermCombinedAmount",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Long-term Debt, Maturities, Repayments of Principal in Year Two",
                            "terseLabel":  "2021"
                            }
                        }
                    },
                "localname":  "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LongTermDebtNoncurrent":  {
                "auth_ref":  [
                    "r50"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_LiabilitiesAndStockholdersEquity",
                        "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 noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer.  Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper.  Excludes capital lease obligations.",
                            "label":  "Long-term Debt, Excluding Current Maturities",
                            "terseLabel":  "Long-term debt",
                            "verboseLabel":  "Total long-term debt"
                            }
                        }
                    },
                "localname":  "LongTermDebtNoncurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtSummaryDetails",
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_LongtermDebtTypeAxis":  {
                "auth_ref":  [
                    "r50"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by type of long-term debt.",
                            "label":  "Long-term Debt, Type [Axis]"
                            }
                        }
                    },
                "localname":  "LongtermDebtTypeAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_LongtermDebtTypeDomain":  {
                "auth_ref":  [
                    "r50",
                    "r256"
                    ],
                "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":  "Longterm Debt Type [Domain]",
                            "terseLabel":  "Long-term Debt, Type [Domain]"
                            }
                        }
                    },
                "localname":  "LongtermDebtTypeDomain",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_MachineryAndEquipmentGross":  {
                "auth_ref":  [
                    "r8",
                    "r233"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_PropertyPlantAndEquipmentNet",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.",
                            "label":  "Machinery and Equipment, Gross",
                            "terseLabel":  "Machinery and equipment"
                            }
                        }
                    },
                "localname":  "MachineryAndEquipmentGross",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_MachineryAndEquipmentMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.",
                            "label":  "Machinery And Equipment [Member]",
                            "terseLabel":  "Machinery and equipment"
                            }
                        }
                    },
                "localname":  "MachineryAndEquipmentMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLongLivedAssetsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_MinorityInterest":  {
                "auth_ref":  [
                    "r55",
                    "r470",
                    "r484"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest",
                        "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 is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).",
                            "label":  "Stockholders' Equity Attributable to Noncontrolling Interest",
                            "terseLabel":  "Noncontrolling interests"
                            }
                        }
                    },
                "localname":  "MinorityInterest",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders":  {
                "auth_ref":  [
                    "r266"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.",
                            "label":  "Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders",
                            "negatedTerseLabel":  "Dividends to noncontrolling interest holders"
                            }
                        }
                    },
                "localname":  "MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_MinorityInterestDecreaseFromRedemptions":  {
                "auth_ref":  [
                    "r266",
                    "r414",
                    "r415"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).",
                            "label":  "Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests",
                            "negatedLabel":  "Noncontrolling interest purchased"
                            }
                        }
                    },
                "localname":  "MinorityInterestDecreaseFromRedemptions",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_MinorityInterestOwnershipPercentageByParent":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The parent entity's interest in net assets of the subsidiary, expressed as a percentage.",
                            "label":  "Noncontrolling Interest, Ownership Percentage by Parent",
                            "terseLabel":  "Ownership percentage in consolidated investments other than equity method investment"
                            }
                        }
                    },
                "localname":  "MinorityInterestOwnershipPercentageByParent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureJointVenturesAndNoncontrollingInterestsDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_MinorityInterestPeriodIncreaseDecrease":  {
                "auth_ref":  [
                    "r410"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Net Increase or Decrease in balance of noncontrolling interest in the subsidiary during the reporting period.",
                            "label":  "Noncontrolling Interest, Period Increase (Decrease)",
                            "negatedLabel":  "Decrease in noncontrolling interest"
                            }
                        }
                    },
                "localname":  "MinorityInterestPeriodIncreaseDecrease",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_MovementInValuationAllowancesAndReservesRollForward":  {
                "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":  "Movement in Valuation Allowances and Reserves [Roll Forward]",
                            "terseLabel":  "Movement in valuation and qualifying accounts"
                            }
                        }
                    },
                "localname":  "MovementInValuationAllowancesAndReservesRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureScheduleIiValuationAndQualifyingAccountsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_MultiemployerPlansPlanContributions1":  {
                "auth_ref":  [
                    "r327"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of contributions made to multiemployer plan by all employers who participate in plan.",
                            "label":  "Multiemployer Plans, Plan Contributions",
                            "terseLabel":  "Contributions to Multiemployer Plans"
                            }
                        }
                    },
                "localname":  "MultiemployerPlansPlanContributions1",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_NetCashProvidedByUsedInFinancingActivities":  {
                "auth_ref":  [
                    "r106"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "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 used in financing activities"
                            }
                        }
                    },
                "localname":  "NetCashProvidedByUsedInFinancingActivities",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Net Cash Provided by (Used in) Financing Activities [Abstract]",
                            "terseLabel":  "Financing activities:"
                            }
                        }
                    },
                "localname":  "NetCashProvidedByUsedInFinancingActivitiesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_NetCashProvidedByUsedInInvestingActivities":  {
                "auth_ref":  [
                    "r106"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  2.0,
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Net Cash Provided by (Used in) Investing Activities [Abstract]",
                            "terseLabel":  "Investing activities:"
                            }
                        }
                    },
                "localname":  "NetCashProvidedByUsedInInvestingActivitiesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_NetCashProvidedByUsedInOperatingActivities":  {
                "auth_ref":  [
                    "r106",
                    "r108",
                    "r111"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  1.0,
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Net Cash Provided by (Used in) Operating Activities [Abstract]",
                            "terseLabel":  "Operating activities:"
                            }
                        }
                    },
                "localname":  "NetCashProvidedByUsedInOperatingActivitiesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_NetIncomeLossAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Net Income (Loss) Attributable to Parent [Abstract]",
                            "terseLabel":  "Numerator:"
                            }
                        }
                    },
                "localname":  "NetIncomeLossAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEarningsPerShareDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_NetIncomeLossAttributableToNoncontrollingInterest":  {
                "auth_ref":  [
                    "r71",
                    "r74",
                    "r418",
                    "r422"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of Net Income (Loss) attributable to noncontrolling interest.",
                            "label":  "Net Income (Loss) Attributable to Noncontrolling Interest",
                            "terseLabel":  "Less:  Net income attributable to noncontrolling interests"
                            }
                        }
                    },
                "localname":  "NetIncomeLossAttributableToNoncontrollingInterest",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic":  {
                "auth_ref":  [
                    "r132",
                    "r138"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.",
                            "label":  "Net Income (Loss) Available to Common Stockholders, Basic",
                            "terseLabel":  "Net income attributable to Reliance",
                            "totalLabel":  "Net income attributable to Reliance",
                            "verboseLabel":  "Net income attributable to Reliance"
                            }
                        }
                    },
                "localname":  "NetIncomeLossAvailableToCommonStockholdersBasic",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEarningsPerShareDetails",
                    "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnauditedDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Impact of Recently Issued Accounting Guidance"
                            }
                        }
                    },
                "localname":  "NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems":  {
                "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":  "New Accounting Pronouncements or Change in Accounting Principle [Line Items]",
                            "terseLabel":  "Impact of Recently Issued Accounting Standards-Adopted"
                            }
                        }
                    },
                "localname":  "NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesImpactOfRecentlyIssuedAccountingStandardsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable":  {
                "auth_ref":  [
                    "r131",
                    "r133"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Summarization of the changes in an accounting principle or a new accounting pronouncement, including the line items affected by the change and the financial effects of the change on those particular line items.",
                            "label":  "New Accounting Pronouncements or Change in Accounting Principle [Table]"
                            }
                        }
                    },
                "localname":  "NewAccountingPronouncementsOrChangeInAccountingPrincipleTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesImpactOfRecentlyIssuedAccountingStandardsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "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":  "Impact of Recently Issued Accounting Standards - Adopted"
                            }
                        }
                    },
                "localname":  "NewAccountingPronouncementsPolicyPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_NonUsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Countries excluding the United States of America (US).",
                            "label":  "Non Us [Member]",
                            "terseLabel":  "Foreign Countries"
                            }
                        }
                    },
                "localname":  "NonUsMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSegmentInformationGeographicLocationDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1":  {
                "auth_ref":  [
                    "r115",
                    "r116",
                    "r117"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition.  Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. \"Part noncash\" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.",
                            "label":  "Noncash or Part Noncash Acquisition, Debt Assumed",
                            "terseLabel":  "Debt assumed in connection with acquisitions"
                            }
                        }
                    },
                "localname":  "NoncashOrPartNoncashAcquisitionDebtAssumed1",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_NoncompeteAgreementsMember":  {
                "auth_ref":  [
                    "r403"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Agreement in which one party agrees not to pursue a similar trade in competition with another party.",
                            "label":  "Noncompete Agreements [Member]",
                            "terseLabel":  "Covenants not to compete"
                            }
                        }
                    },
                "localname":  "NoncompeteAgreementsMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_NoncontrollingInterestMember":  {
                "auth_ref":  [
                    "r409"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "This element represents that portion of equity (net assets) in a subsidiary not attributable, directly or indirectly, to the parent.  A noncontrolling interest is sometimes called a minority interest.",
                            "label":  "Noncontrolling Interest [Member]",
                            "terseLabel":  "Non-controlling Interests"
                            }
                        }
                    },
                "localname":  "NoncontrollingInterestMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "domainItemType"
                },
            "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_NumberOfCountriesInWhichEntityOperates":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The number of countries in which the entity operates as of balance sheet date.",
                            "label":  "Number of Countries in which Entity Operates",
                            "verboseLabel":  "Number of countries in which entity operates outside the U.S."
                            }
                        }
                    },
                "localname":  "NumberOfCountriesInWhichEntityOperates",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesBusinessDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "us-gaap_NumberOfEmployeesTotalMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The consolidated full-time equivalent number of the entity's employees as of the balance sheet date, when it serves as a benchmark in a concentration of risk calculation.",
                            "label":  "Number Of Employees Total [Member]",
                            "terseLabel":  "Total employees"
                            }
                        }
                    },
                "localname":  "NumberOfEmployeesTotalMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_NumberOfOperatingSegments":  {
                "auth_ref":  [
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesGoodwillAndOtherIndefiniteLivedIntangibleAssetsDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "us-gaap_NumberOfReportableSegments":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Number of segments reported by the entity.  A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.",
                            "label":  "Number of Reportable Segments",
                            "terseLabel":  "Number of reportable segments"
                            }
                        }
                    },
                "localname":  "NumberOfReportableSegments",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSegmentInformationSummaryOfSalesByProductAndServiceDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesGoodwillAndOtherIndefiniteLivedIntangibleAssetsDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "us-gaap_NumberOfStatesInWhichEntityOperates":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The number of states the entity operates in as of the balance sheet date.",
                            "label":  "Number of States in which Entity Operates",
                            "terseLabel":  "Number of states in which the company operates metal service center network"
                            }
                        }
                    },
                "localname":  "NumberOfStatesInWhichEntityOperates",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesBusinessDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "us-gaap_OperatingIncomeLoss":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
                        "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":  "Operating income"
                            }
                        }
                    },
                "localname":  "OperatingIncomeLoss",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeaseCost":  {
                "auth_ref":  [
                    "r450",
                    "r457"
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Operating Lease Liabilities, Payments Due [Abstract]",
                            "terseLabel":  "Maturities of operating lease liabilities"
                            }
                        }
                    },
                "localname":  "OperatingLeaseLiabilitiesPaymentsDueAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_OperatingLeaseLiability":  {
                "auth_ref":  [
                    "r448"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetailsCalc2":  {
                        "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",
                            "terseLabel":  "Total operating lease liabilities",
                            "verboseLabel":  "Operating lease liability"
                            }
                        }
                    },
                "localname":  "OperatingLeaseLiability",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesImpactOfRecentlyIssuedAccountingStandardsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeaseLiabilityCurrent":  {
                "auth_ref":  [
                    "r448"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  5.0,
                        "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":  "Current maturities of operating lease liabilities"
                            }
                        }
                    },
                "localname":  "OperatingLeaseLiabilityCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeaseLiabilityNoncurrent":  {
                "auth_ref":  [
                    "r448"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_LiabilitiesAndStockholdersEquity",
                        "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"
                            }
                        }
                    },
                "localname":  "OperatingLeaseLiabilityNoncurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeasePayments":  {
                "auth_ref":  [
                    "r449",
                    "r451"
                    ],
                "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",
                            "verboseLabel":  "Cash payments for operating leases"
                            }
                        }
                    },
                "localname":  "OperatingLeasePayments",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeaseRightOfUseAsset":  {
                "auth_ref":  [
                    "r447"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  3.0,
                        "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 lease right-of-use assets",
                            "verboseLabel":  "Operating lease right-of-use assets"
                            }
                        }
                    },
                "localname":  "OperatingLeaseRightOfUseAsset",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesImpactOfRecentlyIssuedAccountingStandardsDetails",
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent":  {
                "auth_ref":  [
                    "r454",
                    "r457"
                    ],
                "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 discount rate - operating leases"
                            }
                        }
                    },
                "localname":  "OperatingLeaseWeightedAverageDiscountRatePercent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1":  {
                "auth_ref":  [
                    "r453",
                    "r457"
                    ],
                "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 - operating leases"
                            }
                        }
                    },
                "localname":  "OperatingLeaseWeightedAverageRemainingLeaseTerm1",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_OperatingLeasesFutureMinimumPaymentsDue":  {
                "auth_ref":  [
                    "r444",
                    "r445"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.",
                            "label":  "Operating Leases, Future Minimum Payments Due",
                            "totalLabel":  "Total operating lease payments"
                            }
                        }
                    },
                "localname":  "OperatingLeasesFutureMinimumPaymentsDue",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]",
                            "verboseLabel":  "Maturities of non-cancellable operating leases under ASC 840."
                            }
                        }
                    },
                "localname":  "OperatingLeasesFutureMinimumPaymentsDueAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent":  {
                "auth_ref":  [
                    "r444",
                    "r445"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_OperatingLeasesFutureMinimumPaymentsDue",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Operating Leases, Future Minimum Payments Due, Next Twelve Months",
                            "terseLabel":  "2019"
                            }
                        }
                    },
                "localname":  "OperatingLeasesFutureMinimumPaymentsDueCurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears":  {
                "auth_ref":  [
                    "r444",
                    "r445"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetails":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_OperatingLeasesFutureMinimumPaymentsDue",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Operating Leases, Future Minimum Payments, Due in Five Years",
                            "terseLabel":  "2023"
                            }
                        }
                    },
                "localname":  "OperatingLeasesFutureMinimumPaymentsDueInFiveYears",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears":  {
                "auth_ref":  [
                    "r444",
                    "r445"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetails":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_OperatingLeasesFutureMinimumPaymentsDue",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Operating Leases, Future Minimum Payments, Due in Four Years",
                            "terseLabel":  "2022"
                            }
                        }
                    },
                "localname":  "OperatingLeasesFutureMinimumPaymentsDueInFourYears",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears":  {
                "auth_ref":  [
                    "r444",
                    "r445"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetails":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_OperatingLeasesFutureMinimumPaymentsDue",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Operating Leases, Future Minimum Payments, Due in Three Years",
                            "terseLabel":  "2021"
                            }
                        }
                    },
                "localname":  "OperatingLeasesFutureMinimumPaymentsDueInThreeYears",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears":  {
                "auth_ref":  [
                    "r444",
                    "r445"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_OperatingLeasesFutureMinimumPaymentsDue",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Operating Leases, Future Minimum Payments, Due in Two Years",
                            "terseLabel":  "2020"
                            }
                        }
                    },
                "localname":  "OperatingLeasesFutureMinimumPaymentsDueInTwoYears",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter":  {
                "auth_ref":  [
                    "r444",
                    "r445"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureLeasesDetails":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_OperatingLeasesFutureMinimumPaymentsDue",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Operating Leases, Future Minimum Payments, Due Thereafter",
                            "terseLabel":  "Thereafter"
                            }
                        }
                    },
                "localname":  "OperatingLeasesFutureMinimumPaymentsDueThereafter",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OperatingLossCarryforwards":  {
                "auth_ref":  [
                    "r381"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "OperatingLossCarryforwards",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "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":  "Income Taxes"
                            }
                        }
                    },
                "localname":  "OperatingLossCarryforwardsLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_OperatingLossCarryforwardsTable":  {
                "auth_ref":  [
                    "r382"
                    ],
                "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]"
                            }
                        }
                    },
                "localname":  "OperatingLossCarryforwardsTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_OtherAssetsMiscellaneousNoncurrent":  {
                "auth_ref":  [
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  7.0,
                        "parentTag":  "us-gaap_Assets",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of other miscellaneous assets expected to be realized or consumed after one year or normal operating cycle, if longer.",
                            "label":  "Other Assets, Miscellaneous, Noncurrent",
                            "terseLabel":  "Other assets"
                            }
                        }
                    },
                "localname":  "OtherAssetsMiscellaneousNoncurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax":  {
                "auth_ref":  [
                    "r62",
                    "r437"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome":  {
                        "order":  1.0,
                        "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 gain (loss)"
                            }
                        }
                    },
                "localname":  "OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherComprehensiveIncomeLossNetOfTax":  {
                "auth_ref":  [
                    "r72",
                    "r75",
                    "r78",
                    "r261"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest",
                        "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",
                            "terseLabel":  "Other comprehensive income (loss)",
                            "totalLabel":  "Total other comprehensive (loss) income"
                            }
                        }
                    },
                "localname":  "OtherComprehensiveIncomeLossNetOfTax",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Other Comprehensive Income (Loss), Net of Tax [Abstract]",
                            "terseLabel":  "Other comprehensive income (loss):",
                            "verboseLabel":  "Other comprehensive (loss) income:"
                            }
                        }
                    },
                "localname":  "OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax":  {
                "auth_ref":  [
                    "r65",
                    "r67"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_OtherComprehensiveIncomeLossNetOfTax",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.",
                            "label":  "Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax",
                            "negatedLabel":  "Pension and postretirement benefit adjustments, net of tax"
                            }
                        }
                    },
                "localname":  "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock":  {
                "auth_ref":  [
                    "r275",
                    "r356"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The entire disclosure for other income or other expense items (both operating and nonoperating).  Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions.",
                            "label":  "Other Income and Other Expense Disclosure [Text Block]",
                            "terseLabel":  "Other (Income) Expense, net"
                            }
                        }
                    },
                "localname":  "OtherIncomeAndOtherExpenseDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNet"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_OtherIntangibleAssetsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Intangible assets classified as other.",
                            "label":  "Other Intangible Assets [Member]",
                            "terseLabel":  "Other"
                            }
                        }
                    },
                "localname":  "OtherIntangibleAssetsMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_OtherLiabilitiesNoncurrent":  {
                "auth_ref":  [
                    "r51"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  5.0,
                        "parentTag":  "us-gaap_LiabilitiesAndStockholdersEquity",
                        "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 long-term liabilities"
                            }
                        }
                    },
                "localname":  "OtherLiabilitiesNoncurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherNoncashIncomeExpense":  {
                "auth_ref":  [
                    "r111"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  8.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of income (expense) included in net income that results in no cash inflow (outflow), classified as other.",
                            "label":  "Other Noncash Income (Expense)",
                            "negatedLabel":  "Other"
                            }
                        }
                    },
                "localname":  "OtherNoncashIncomeExpense",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherNonoperatingIncomeExpense":  {
                "auth_ref":  [
                    "r91"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
                        "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)",
                            "negatedTerseLabel":  "Other (income) expense, net"
                            }
                        }
                    },
                "localname":  "OtherNonoperatingIncomeExpense",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNetDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_OtherNonoperatingIncomeExpenseAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Other (Income) Expense, net"
                            }
                        }
                    },
                "localname":  "OtherNonoperatingIncomeExpenseAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_OtherNonoperatingIncomeExpenseMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Primary financial statement caption encompassing other nonoperating income (expense).",
                            "label":  "Other Nonoperating Income Expense [Member]",
                            "terseLabel":  "Other (income) expense, net"
                            }
                        }
                    },
                "localname":  "OtherNonoperatingIncomeExpenseMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_OtherPensionPlansDefinedBenefitMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Plan designed to provide retirement benefits, classified as other.  Includes, but is not limited to, defined benefit and defined contribution plans.",
                            "label":  "Other Pension Plans Defined Benefit [Member]",
                            "terseLabel":  "Other defined contribution plans"
                            }
                        }
                    },
                "localname":  "OtherPensionPlansDefinedBenefitMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSupplementalBonusPlanDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_ParentMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Portion of equity, or net assets, in the consolidated entity attributable, directly or indirectly, to the parent.  Excludes noncontrolling interests.",
                            "label":  "Parent [Member]",
                            "terseLabel":  "Reliance Shareholders' Equity"
                            }
                        }
                    },
                "localname":  "ParentMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_PaymentsForProceedsFromOtherInvestingActivities":  {
                "auth_ref":  [
                    "r94",
                    "r97",
                    "r126"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "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",
                            "negatedLabel":  "Other"
                            }
                        }
                    },
                "localname":  "PaymentsForProceedsFromOtherInvestingActivities",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsForRepurchaseOfCommonStock":  {
                "auth_ref":  [
                    "r101"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  7.0,
                        "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",
                            "negatedLabel":  "Share repurchases"
                            }
                        }
                    },
                "localname":  "PaymentsForRepurchaseOfCommonStock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries":  {
                "auth_ref":  [
                    "r95"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The cash outflow associated with the purchase of noncontrolling interest during the period.",
                            "label":  "Payments to Acquire Additional Interest in Subsidiaries",
                            "verboseLabel":  "Consideration paid for additional ownership percentage"
                            }
                        }
                    },
                "localname":  "PaymentsToAcquireAdditionalInterestInSubsidiaries",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired":  {
                "auth_ref":  [
                    "r95"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  3.0,
                        "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",
                            "negatedLabel":  "Acquisitions, net of cash acquired"
                            }
                        }
                    },
                "localname":  "PaymentsToAcquireBusinessesNetOfCashAcquired",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PaymentsToAcquirePropertyPlantAndEquipment":  {
                "auth_ref":  [
                    "r96"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "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 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":  "Purchases of property, plant and equipment"
                            }
                        }
                    },
                "localname":  "PaymentsToAcquirePropertyPlantAndEquipment",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PensionAndOtherPostretirementBenefitExpense":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of cost (reversal of cost) for pension and other postretirement benefits.",
                            "label":  "Pension and Other Postretirement Benefit Expense",
                            "terseLabel":  "Company's expense for Reliance-sponsored retirement plans"
                            }
                        }
                    },
                "localname":  "PensionAndOtherPostretirementBenefitExpense",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSupplementalBonusPlanDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities":  {
                "auth_ref":  [
                    "r22",
                    "r279",
                    "r280",
                    "r290"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as current.",
                            "label":  "Pension and Other Postretirement Defined Benefit Plans, Current Liabilities",
                            "negatedLabel":  "Current liabilities"
                            }
                        }
                    },
                "localname":  "PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent":  {
                "auth_ref":  [
                    "r24",
                    "r279",
                    "r280",
                    "r290"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet",
                        "weight":  -1.0
                        },
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  4.0,
                        "parentTag":  "us-gaap_LiabilitiesAndStockholdersEquity",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.",
                            "label":  "Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent",
                            "negatedLabel":  "Noncurrent liabilities",
                            "terseLabel":  "Long-term retirement costs"
                            }
                        }
                    },
                "localname":  "PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails",
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PensionPlansDefinedBenefitMember":  {
                "auth_ref":  [
                    "r276",
                    "r310",
                    "r311",
                    "r326"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Plan designed to provide participant with pension benefits.  Includes, but is not limited to, defined benefit and defined contribution plans.  Excludes other postretirement benefits.",
                            "label":  "Pension Plans Defined Benefit [Member]",
                            "terseLabel":  "Defined Benefit Plans"
                            }
                        }
                    },
                "localname":  "PensionPlansDefinedBenefitMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSupplementalBonusPlanDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_PlanAssetCategoriesDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Defined benefit plan asset investment.",
                            "label":  "Plan Asset Categories [Domain]",
                            "terseLabel":  "Plan Asset Categories [Domain]"
                            }
                        }
                    },
                "localname":  "PlanAssetCategoriesDomain",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_PlanNameAxis":  {
                "auth_ref":  [
                    "r329",
                    "r353"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by plan name for share-based payment arrangement.",
                            "label":  "Plan Name [Axis]"
                            }
                        }
                    },
                "localname":  "PlanNameAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_PostemploymentBenefitsLiabilityNoncurrent":  {
                "auth_ref":  [
                    "r278"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "For a classified balance sheet, the carrying amount as of the balance sheet date of the portion of the obligations recognized for the various benefits provided to former or inactive employees, their beneficiaries, and covered dependents after employment but before retirement that is payable after one year (or beyond the operating cycle if longer).",
                            "label":  "Postemployment Benefits Liability, Noncurrent",
                            "terseLabel":  "Cash equivalent of share liability to the plan"
                            }
                        }
                    },
                "localname":  "PostemploymentBenefitsLiabilityNoncurrent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]",
                            "terseLabel":  "Preferred Stock"
                            }
                        }
                    },
                "localname":  "PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityShareRepurchasePlanPreferredStockDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_PreferredStockParOrStatedValuePerShare":  {
                "auth_ref":  [
                    "r27"
                    ],
                "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, No Par Value",
                            "terseLabel":  "Preferred stock, par value (in dollars per share)"
                            }
                        }
                    },
                "localname":  "PreferredStockParOrStatedValuePerShare",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityShareRepurchasePlanPreferredStockDetails",
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheetsParenthetical"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_PreferredStockSharesAuthorized":  {
                "auth_ref":  [
                    "r27"
                    ],
                "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 shares",
                            "verboseLabel":  "Preferred stock, authorized shares"
                            }
                        }
                    },
                "localname":  "PreferredStockSharesAuthorized",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityShareRepurchasePlanPreferredStockDetails",
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheetsParenthetical"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_PreferredStockSharesIssued":  {
                "auth_ref":  [
                    "r27"
                    ],
                "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 shares"
                            }
                        }
                    },
                "localname":  "PreferredStockSharesIssued",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityShareRepurchasePlanPreferredStockDetails",
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheetsParenthetical"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_PreferredStockSharesOutstanding":  {
                "auth_ref":  [
                    "r27"
                    ],
                "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 shares"
                            }
                        }
                    },
                "localname":  "PreferredStockSharesOutstanding",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityShareRepurchasePlanPreferredStockDetails",
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheetsParenthetical"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_PreferredStockValue":  {
                "auth_ref":  [
                    "r27"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_StockholdersEquity",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer).  This item includes treasury stock repurchased by the entity.  Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.",
                            "label":  "Preferred Stock, Value, Issued",
                            "verboseLabel":  "Preferred stock, $0.001 par value:  Authorized shares - 5,000 None issued or outstanding"
                            }
                        }
                    },
                "localname":  "PreferredStockValue",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PrepaidExpenseAndOtherAssetsCurrent":  {
                "auth_ref":  [
                    "r4",
                    "r39",
                    "r40"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  4.0,
                        "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PrimeRateMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Interest rate charged by financial institutions to their most creditworthy borrowers.",
                            "label":  "Prime Rate [Member]",
                            "terseLabel":  "Bank prime rate"
                            }
                        }
                    },
                "localname":  "PrimeRateMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_ProceedsFromDebtNetOfIssuanceCosts":  {
                "auth_ref":  [
                    "r99"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInFinancingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.",
                            "label":  "Proceeds from Debt, Net of Issuance Costs",
                            "terseLabel":  "Proceeds from long-term debt borrowings"
                            }
                        }
                    },
                "localname":  "ProceedsFromDebtNetOfIssuanceCosts",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ProceedsFromIssuanceOfDebt":  {
                "auth_ref":  [
                    "r99"
                    ],
                "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":  "Issuance of debt"
                            }
                        }
                    },
                "localname":  "ProceedsFromIssuanceOfDebt",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ProceedsFromPaymentsForOtherFinancingActivities":  {
                "auth_ref":  [
                    "r100",
                    "r103",
                    "r126"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  8.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInFinancingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of cash inflow (outflow) from financing activities classified as other.",
                            "label":  "Proceeds from (Payments for) Other Financing Activities",
                            "verboseLabel":  "Other"
                            }
                        }
                    },
                "localname":  "ProceedsFromPaymentsForOtherFinancingActivities",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ProceedsFromRepaymentsOfShortTermDebt":  {
                "auth_ref":  [
                    "r126"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInFinancingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.",
                            "label":  "Proceeds from (Repayments of) Short-term Debt",
                            "terseLabel":  "Net short-term debt (repayments) borrowings"
                            }
                        }
                    },
                "localname":  "ProceedsFromRepaymentsOfShortTermDebt",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment":  {
                "auth_ref":  [
                    "r93"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInInvestingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.",
                            "label":  "Proceeds from Sale of Property, Plant, and Equipment",
                            "verboseLabel":  "Proceeds from sales of property, plant and equipment"
                            }
                        }
                    },
                "localname":  "ProceedsFromSaleOfPropertyPlantAndEquipment",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ProceedsFromStockOptionsExercised":  {
                "auth_ref":  [
                    "r98",
                    "r354"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  6.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInFinancingActivities",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of cash inflow from exercise of option under share-based payment arrangement.",
                            "label":  "Proceeds from Stock Options Exercised",
                            "terseLabel":  "Exercise of stock options",
                            "verboseLabel":  "Proceed from option exercises"
                            }
                        }
                    },
                "localname":  "ProceedsFromStockOptionsExercised",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ProfitLoss":  {
                "auth_ref":  [
                    "r71",
                    "r74",
                    "r105",
                    "r170",
                    "r174",
                    "r411",
                    "r417",
                    "r419",
                    "r422",
                    "r423"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInOperatingActivities",
                        "weight":  1.0
                        },
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest",
                        "weight":  1.0
                        },
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.",
                            "label":  "Net Income (Loss), Including Portion Attributable to Noncontrolling Interest",
                            "terseLabel":  "Net income",
                            "totalLabel":  "Net income"
                            }
                        }
                    },
                "localname":  "ProfitLoss",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnauditedDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfComprehensiveIncome",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PropertyPlantAndEquipmentByTypeAxis":  {
                "auth_ref":  [
                    "r43",
                    "r235"
                    ],
                "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":  "Property, Plant and Equipment, Type [Axis]"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentByTypeAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLongLivedAssetsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "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"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLongLivedAssetsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_PropertyPlantAndEquipmentNet":  {
                "auth_ref":  [
                    "r16",
                    "r17",
                    "r235",
                    "r486"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_Assets",
                        "weight":  1.0
                        }
                    },
                "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",
                            "totalLabel":  "Property, plant and equipment, net"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentNet",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_PropertyPlantAndEquipmentNetAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Property, Plant and Equipment, Net [Abstract]",
                            "terseLabel":  "Property, plant and equipment:"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentNetAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_PropertyPlantAndEquipmentTypeDomain":  {
                "auth_ref":  [
                    "r16",
                    "r233"
                    ],
                "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":  "Property Plant And Equipment Type [Domain]",
                            "terseLabel":  "Property, Plant and Equipment, Type [Domain]"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentTypeDomain",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLongLivedAssetsDetails"
                    ],
                "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":  "Useful lives"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentUsefulLife",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLongLivedAssetsDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_ProvisionForDoubtfulAccounts":  {
                "auth_ref":  [
                    "r86",
                    "r187"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  4.0,
                        "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":  "Provision for Doubtful Accounts",
                            "terseLabel":  "Provision for uncollectible accounts"
                            }
                        }
                    },
                "localname":  "ProvisionForDoubtfulAccounts",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_QuarterlyFinancialDataAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Quarterly Financial Data [Abstract]",
                            "terseLabel":  "Summary of the quarterly results of operations"
                            }
                        }
                    },
                "localname":  "QuarterlyFinancialDataAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnauditedDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_QuarterlyFinancialInformationDisclosureAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Quarterly Financial Information (Unaudited)"
                            }
                        }
                    },
                "localname":  "QuarterlyFinancialInformationDisclosureAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_QuarterlyFinancialInformationTextBlock":  {
                "auth_ref":  [
                    "r151"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The entire disclosure for quarterly financial data.  Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information.",
                            "label":  "Quarterly Financial Information [Text Block]",
                            "terseLabel":  "Quarterly Financial Information (Unaudited)"
                            }
                        }
                    },
                "localname":  "QuarterlyFinancialInformationTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnaudited"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent":  {
                "auth_ref":  [
                    "r69",
                    "r78"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.",
                            "label":  "Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent",
                            "terseLabel":  "Reclassification of stranded tax effect resulting from Tax Reform to retained earnings"
                            }
                        }
                    },
                "localname":  "ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityAccumulatedOtherComprehensiveLossDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "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 the beginning and ending balances of the total amounts of unrecognized tax benefits"
                            }
                        }
                    },
                "localname":  "ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RepaymentsOfLongTermDebt":  {
                "auth_ref":  [
                    "r102"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  3.0,
                        "parentTag":  "us-gaap_NetCashProvidedByUsedInFinancingActivities",
                        "weight":  -1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.",
                            "label":  "Repayments of Long-term Debt",
                            "negatedLabel":  "Principal payments on long-term debt"
                            }
                        }
                    },
                "localname":  "RepaymentsOfLongTermDebt",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_RestrictedStockMember":  {
                "auth_ref":  [
                    "r145"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Stock including a provision that prohibits sale or substantive sale of an equity instrument for a specified period of time or until specified performance conditions are met.",
                            "label":  "Restricted Stock [Member]",
                            "terseLabel":  "Restricted stock"
                            }
                        }
                    },
                "localname":  "RestrictedStockMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "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 R S U [Member]",
                            "terseLabel":  "RSU's"
                            }
                        }
                    },
                "localname":  "RestrictedStockUnitsRSUMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_RestructuringCharges":  {
                "auth_ref":  [
                    "r110",
                    "r242",
                    "r245",
                    "r247"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_RestructuringCostsAndAssetImpairmentCharges",
                        "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"
                            }
                        }
                    },
                "localname":  "RestructuringCharges",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "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":  "Impairment and Restructuring Charges"
                            }
                        }
                    },
                "localname":  "RestructuringCostAndReserveLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RestructuringCostsAndAssetImpairmentCharges":  {
                "auth_ref":  [
                    "r110"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets.  Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation.",
                            "label":  "Restructuring Costs and Asset Impairment Charges",
                            "totalLabel":  "Total impairment and restructuring charges"
                            }
                        }
                    },
                "localname":  "RestructuringCostsAndAssetImpairmentCharges",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_RestructuringImpairmentAndOtherActivitiesDisclosureTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The entire 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, Impairment, and Other Activities Disclosure [Text Block]",
                            "terseLabel":  "Impairment and Restructuring Charges"
                            }
                        }
                    },
                "localname":  "RestructuringImpairmentAndOtherActivitiesDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringCharges"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_RetainedEarningsAccumulatedDeficit":  {
                "auth_ref":  [
                    "r31",
                    "r266",
                    "r483"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  3.0,
                        "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":  "Retained earnings"
                            }
                        }
                    },
                "localname":  "RetainedEarningsAccumulatedDeficit",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_RetainedEarningsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The cumulative amount of the reporting entity's undistributed earnings or deficit.",
                            "label":  "Retained Earnings [Member]",
                            "terseLabel":  "Retained Earnings"
                            }
                        }
                    },
                "localname":  "RetainedEarningsMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_RetirementPlanTypeAxis":  {
                "auth_ref":  [
                    "r276",
                    "r277",
                    "r310",
                    "r311",
                    "r326"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by type of retirement benefit plan.  Includes, but is not limited to, retirement benefit arrangement for defined benefit pension and other postretirement plans, retirement benefit arrangement for defined contribution pension and other postretirement plans, and special and contractual termination benefits payable upon retirement.",
                            "label":  "Retirement Plan Type [Axis]"
                            }
                        }
                    },
                "localname":  "RetirementPlanTypeAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsDefinedBenefitPlanTerminationDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSupplementalBonusPlanDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RetirementPlanTypeDomain":  {
                "auth_ref":  [
                    "r276",
                    "r277",
                    "r310",
                    "r311",
                    "r326"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Type of plan designed to provide participants with retirement benefits.  Includes, but is not limited to, retirement benefit arrangement for defined benefit pension and other postretirement plans, retirement benefit arrangement for defined contribution pension and other postretirement plans, and special and contractual termination benefits payable upon retirement.",
                            "label":  "Retirement Plan Type [Domain]",
                            "terseLabel":  "Defined Benefit Plan and Other Postretirement Benefit Plan [Domain]"
                            }
                        }
                    },
                "localname":  "RetirementPlanTypeDomain",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsDefinedBenefitPlanTerminationDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSupplementalBonusPlanDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_RevenueFromContractWithCustomerAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Revenue"
                            }
                        }
                    },
                "localname":  "RevenueFromContractWithCustomerAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax":  {
                "auth_ref":  [
                    "r268",
                    "r269"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnauditedDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_GrossProfit",
                        "weight":  1.0
                        },
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_OperatingIncomeLoss",
                        "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",
                            "terseLabel":  "Revenue",
                            "verboseLabel":  "Net sales"
                            }
                        }
                    },
                "localname":  "RevenueFromContractWithCustomerExcludingAssessedTax",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnauditedDetails",
                    "http://www.rsac.com/role/DisclosureRevenuesDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_RevenueFromContractWithCustomerPolicyTextBlock":  {
                "auth_ref":  [
                    "r120",
                    "r274"
                    ],
                "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"
                            }
                        }
                    },
                "localname":  "RevenueFromContractWithCustomerPolicyTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_RevenueFromContractWithCustomerTextBlock":  {
                "auth_ref":  [
                    "r274"
                    ],
                "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":  "Revenues"
                            }
                        }
                    },
                "localname":  "RevenueFromContractWithCustomerTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureRevenues"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_Revenues":  {
                "auth_ref":  [
                    "r81",
                    "r165",
                    "r166",
                    "r173"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process.  Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).",
                            "label":  "Revenues",
                            "terseLabel":  "Net sales"
                            }
                        }
                    },
                "localname":  "Revenues",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureSegmentInformationGeographicLocationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems":  {
                "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":  "Revenues from External Customers and Long-Lived Assets [Line Items]",
                            "terseLabel":  "Consolidated financial information of the Company's operations by geographic location"
                            }
                        }
                    },
                "localname":  "RevenuesFromExternalCustomersAndLongLivedAssetsLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSegmentInformationGeographicLocationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability":  {
                "auth_ref":  [
                    "r452",
                    "r457"
                    ],
                "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 operating lease obligations"
                            }
                        }
                    },
                "localname":  "RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureLeasesDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock":  {
                "auth_ref":  [
                    "r312",
                    "r313",
                    "r324"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of benefit obligation and plan assets of defined benefit plan with accumulated benefit obligation in excess of plan assets.",
                            "label":  "Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]",
                            "terseLabel":  "Schedule of information for defined benefit plans with an accumulated benefit obligation and projected benefit obligation in excess of plan assets"
                            }
                        }
                    },
                "localname":  "ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock":  {
                "auth_ref":  [
                    "r69"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the components of accumulated other comprehensive income (loss).",
                            "label":  "Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]",
                            "terseLabel":  "Schedule of accumulated other comprehensive loss"
                            }
                        }
                    },
                "localname":  "ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock":  {
                "auth_ref":  [
                    "r291"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans.  This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall.",
                            "label":  "Schedule of Allocation of Plan Assets [Table Text Block]",
                            "terseLabel":  "Schedule of fair value measurements of Defined Benefit Plans assets"
                            }
                        }
                    },
                "localname":  "ScheduleOfAllocationOfPlanAssetsTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfAmountsRecognizedInBalanceSheetTableTextBlock":  {
                "auth_ref":  [
                    "r290"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the amounts that are recognized in the balance sheet (or statement of financial position) for pension plans and/or other employee benefit plans, showing separately the assets and current and noncurrent liabilities (if applicable) recognized.",
                            "label":  "Schedule of Amounts Recognized in Balance Sheet [Table Text Block]",
                            "terseLabel":  "Schedule of amounts recognized in the statement of financial position"
                            }
                        }
                    },
                "localname":  "ScheduleOfAmountsRecognizedInBalanceSheetTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable":  {
                "auth_ref":  [
                    "r397",
                    "r398"
                    ],
                "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]"
                            }
                        }
                    },
                "localname":  "ScheduleOfBusinessAcquisitionsByAcquisitionTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureAcquisitionsTables",
                    "http://www.rsac.com/role/DisclosureGoodwillDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock":  {
                "auth_ref":  [
                    "r387"
                    ],
                "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":  "Schedule of components of the provision for income taxes attributable to continuing operations"
                            }
                        }
                    },
                "localname":  "ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock":  {
                "auth_ref":  [
                    "r310"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost.",
                            "label":  "Schedule of Costs of Retirement Plans [Table Text Block]",
                            "terseLabel":  "Schedule of Company's expense for Reliance-sponsored retirement plans"
                            }
                        }
                    },
                "localname":  "ScheduleOfCostsOfRetirementPlansTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfDebtTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation.",
                            "label":  "Schedule of Debt [Table Text Block]",
                            "terseLabel":  "Summary of debt"
                            }
                        }
                    },
                "localname":  "ScheduleOfDebtTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock":  {
                "auth_ref":  [
                    "r379"
                    ],
                "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 components of the Company's deferred tax assets and liabilities"
                            }
                        }
                    },
                "localname":  "ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable":  {
                "auth_ref":  [
                    "r310",
                    "r311",
                    "r314",
                    "r315",
                    "r324"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Disclosures about an individual defined benefit pension plan or an other postretirement defined benefit plan.  It may be appropriate to group certain similar plans.  Also includes schedule for fair value of plan assets by major categories of plan assets 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 or liabilities (Level 1), Significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).",
                            "label":  "Schedule of Defined Benefit Plans Disclosures [Table]"
                            }
                        }
                    },
                "localname":  "ScheduleOfDefinedBenefitPlansDisclosuresTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsDefinedBenefitPlanTerminationDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock":  {
                "auth_ref":  [
                    "r146"
                    ],
                "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":  "Computation of basic and diluted earnings per share"
                            }
                        }
                    },
                "localname":  "ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEarningsPerShareTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock":  {
                "auth_ref":  [
                    "r364"
                    ],
                "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 reconciliation of income tax at the U.S. federal statutory tax rates to income tax expense"
                            }
                        }
                    },
                "localname":  "ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock":  {
                "auth_ref":  [
                    "r175"
                    ],
                "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 sales, by products or services"
                            }
                        }
                    },
                "localname":  "ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSegmentInformationTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock":  {
                "auth_ref":  [
                    "r296"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter.",
                            "label":  "Schedule of Expected Benefit Payments [Table Text Block]",
                            "terseLabel":  "Summary of benefits payments under the SERPs and Defined Benefit Plans, which reflect expected future employee service, as appropriate, expected to be paid in the future periods"
                            }
                        }
                    },
                "localname":  "ScheduleOfExpectedBenefitPaymentsTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfGoodwillTextBlock":  {
                "auth_ref":  [
                    "r212",
                    "r214"
                    ],
                "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":  "Schedule of changes in the carrying amount of goodwill"
                            }
                        }
                    },
                "localname":  "ScheduleOfGoodwillTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureGoodwillTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock":  {
                "auth_ref":  [
                    "r123"
                    ],
                "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":  "Components of U.S. and international income before income taxes"
                            }
                        }
                    },
                "localname":  "ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock":  {
                "auth_ref":  [
                    "r212"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class.",
                            "label":  "Schedule of Intangible Assets and Goodwill [Table Text Block]",
                            "terseLabel":  "Summary of intangible assets, net"
                            }
                        }
                    },
                "localname":  "ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfInventoryCurrentTableTextBlock":  {
                "auth_ref":  [
                    "r11",
                    "r36",
                    "r37",
                    "r38"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.",
                            "label":  "Schedule of Inventory, Current [Table Text Block]",
                            "terseLabel":  "Schedule of inventories"
                            }
                        }
                    },
                "localname":  "ScheduleOfInventoryCurrentTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureInventoriesTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock":  {
                "auth_ref":  [
                    "r255"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented.",
                            "label":  "Schedule of Maturities of Long-term Debt [Table Text Block]",
                            "terseLabel":  "Summary of aggregate maturities of long-term debt for each of the next five years and thereafter"
                            }
                        }
                    },
                "localname":  "ScheduleOfMaturitiesOfLongTermDebtTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfNetBenefitCostsTableTextBlock":  {
                "auth_ref":  [
                    "r298"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.",
                            "label":  "Schedule of Net Benefit Costs [Table Text Block]",
                            "terseLabel":  "Schedule of details of net periodic pension expense"
                            }
                        }
                    },
                "localname":  "ScheduleOfNetBenefitCostsTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items.",
                            "label":  "Schedule of Other Nonoperating Income (Expense) [Table Text Block]",
                            "terseLabel":  "Schedule of significant components of other expense, net"
                            }
                        }
                    },
                "localname":  "ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureOtherIncomeExpenseNetTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfPropertyPlantAndEquipmentTable":  {
                "auth_ref":  [
                    "r43",
                    "r235"
                    ],
                "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]"
                            }
                        }
                    },
                "localname":  "ScheduleOfPropertyPlantAndEquipmentTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLongLivedAssetsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock":  {
                "auth_ref":  [
                    "r150"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of quarterly financial data.  Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data.",
                            "label":  "Schedule of Quarterly Financial Information [Table Text Block]",
                            "terseLabel":  "Summary of the unaudited quarterly results of operations"
                            }
                        }
                    },
                "localname":  "ScheduleOfQuarterlyFinancialInformationTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureQuarterlyFinancialInformationUnauditedTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock":  {
                "auth_ref":  [
                    "r401"
                    ],
                "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]",
                            "terseLabel":  "Schedule of allocation of the purchase price of acquisition to the fair value of the assets acquired and liabilities assumed"
                            }
                        }
                    },
                "localname":  "ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfRestructuringAndRelatedCostsTable":  {
                "auth_ref":  [
                    "r243",
                    "r244",
                    "r246"
                    ],
                "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]"
                            }
                        }
                    },
                "localname":  "ScheduleOfRestructuringAndRelatedCostsTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock":  {
                "auth_ref":  [
                    "r243",
                    "r244",
                    "r246"
                    ],
                "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 impairment and restructuring charges"
                            }
                        }
                    },
                "localname":  "ScheduleOfRestructuringAndRelatedCostsTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock":  {
                "auth_ref":  [
                    "r88",
                    "r176"
                    ],
                "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":  "Summary of the Company's operations by geographic location based on where sales originated from"
                            }
                        }
                    },
                "localname":  "ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSegmentInformationTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable":  {
                "auth_ref":  [
                    "r79",
                    "r81",
                    "r176"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Schedule of 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 Revenues from External Customers and Long-Lived Assets [Table]"
                            }
                        }
                    },
                "localname":  "ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSegmentInformationGeographicLocationDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable":  {
                "auth_ref":  [
                    "r164",
                    "r170",
                    "r171",
                    "r172",
                    "r212"
                    ],
                "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]"
                            }
                        }
                    },
                "localname":  "ScheduleOfSegmentReportingInformationBySegmentTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSegmentInformationSummaryOfSalesByProductAndServiceDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable":  {
                "auth_ref":  [
                    "r329",
                    "r353"
                    ],
                "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]"
                            }
                        }
                    },
                "localname":  "ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails",
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTable":  {
                "auth_ref":  [
                    "r353"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Details comprising a table providing supplementary information on outstanding and exercisable share awards as of the balance sheet date which stratifies outstanding options by ranges of exercise prices.",
                            "label":  "Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table]"
                            }
                        }
                    },
                "localname":  "ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansOutstandingAndExercisableOptionsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock":  {
                "auth_ref":  [
                    "r353"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.",
                            "label":  "Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]",
                            "terseLabel":  "Summary of certain information concerning outstanding and exercisable options"
                            }
                        }
                    },
                "localname":  "ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock":  {
                "auth_ref":  [
                    "r333",
                    "r345",
                    "r347"
                    ],
                "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":  "Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]",
                            "terseLabel":  "Schedule of stock option activity"
                            }
                        }
                    },
                "localname":  "ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock":  {
                "auth_ref":  [
                    "r224"
                    ],
                "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":  "Summary of estimated aggregate amortization expense"
                            }
                        }
                    },
                "localname":  "ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_SegmentReportingAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Segment Information"
                            }
                        }
                    },
                "localname":  "SegmentReportingAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_SegmentReportingDisclosureTextBlock":  {
                "auth_ref":  [
                    "r177"
                    ],
                "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 Information"
                            }
                        }
                    },
                "localname":  "SegmentReportingDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSegmentInformation"
                    ],
                "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 Information"
                            }
                        }
                    },
                "localname":  "SegmentReportingInformationLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSegmentInformationSummaryOfSalesByProductAndServiceDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_SellingGeneralAndAdministrativeExpense":  {
                "auth_ref":  [
                    "r90",
                    "r196"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_CostsAndExpenses",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses.  Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products.  Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges.  General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.",
                            "label":  "Selling, General and Administrative Expense",
                            "terseLabel":  "Warehouse, delivery, selling, general and administrative"
                            }
                        }
                    },
                "localname":  "SellingGeneralAndAdministrativeExpense",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_SellingGeneralAndAdministrativeExpensesMember":  {
                "auth_ref":  [
                    "r92"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Primary financial statement caption encompassing selling, general and administrative expense.",
                            "label":  "Selling General And Administrative Expenses [Member]",
                            "terseLabel":  "Warehouse, delivery, selling, general and administrative expense"
                            }
                        }
                    },
                "localname":  "SellingGeneralAndAdministrativeExpensesMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails",
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_ShareBasedCompensation":  {
                "auth_ref":  [
                    "r109"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  7.0,
                        "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 Compensation",
                            "terseLabel":  "Stock-based compensation expense"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensation",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionShareBasedCompensationAndForeignCurrenciesDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ShareBasedCompensationAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Share-based Compensation [Abstract]",
                            "terseLabel":  "Share-Based Compensation"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionShareBasedCompensationAndForeignCurrenciesDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalGeneralDisclosuresAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]",
                            "terseLabel":  "Additional share-based compensation disclosures",
                            "verboseLabel":  "Stock-Based Compensation"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalGeneralDisclosuresAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails",
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails",
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1":  {
                "auth_ref":  [
                    "r330"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.  Includes, but is not limited to, combination of market, performance or service condition.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period",
                            "terseLabel":  "Vesting period (in years)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails",
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]",
                            "terseLabel":  "Shares"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod":  {
                "auth_ref":  [
                    "r338"
                    ],
                "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",
                            "negatedLabel":  "Cancelled or forfeited (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue":  {
                "auth_ref":  [
                    "r343"
                    ],
                "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":  "Cancelled or forfeited (in dollars per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod":  {
                "auth_ref":  [
                    "r341"
                    ],
                "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",
                            "terseLabel":  "Awards granted (in shares)",
                            "verboseLabel":  "Granted (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue":  {
                "auth_ref":  [
                    "r341"
                    ],
                "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":  "Fair value of restricted stock granted (in dollars per share)",
                            "verboseLabel":  "Granted (in dollars per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber":  {
                "auth_ref":  [
                    "r340"
                    ],
                "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":  "Unvested at the end of the year (in shares)",
                            "periodStartLabel":  "Unvested at the beginning of the year (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "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":  "Changes"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue":  {
                "auth_ref":  [
                    "r340"
                    ],
                "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":  "Unvested at the end of the year (in dollars per share)",
                            "periodStartLabel":  "Unvested at the beginning of the year (in dollars per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "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 Grant Date Fair Value"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod":  {
                "auth_ref":  [
                    "r342"
                    ],
                "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",
                            "negatedLabel":  "Vested (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue":  {
                "auth_ref":  [
                    "r346"
                    ],
                "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 vested units"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue":  {
                "auth_ref":  [
                    "r342"
                    ],
                "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":  "Vested (in dollars per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "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":  "Stock Based Compensation",
                            "verboseLabel":  "Share-based compensation plans"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails",
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant":  {
                "auth_ref":  [
                    "r353"
                    ],
                "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":  "Shares authorized for future grant"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "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":  "Weighted Average Exercise Price"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber":  {
                "auth_ref":  [
                    "r336"
                    ],
                "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 at the end of the year (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice":  {
                "auth_ref":  [
                    "r336"
                    ],
                "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":  "Exercisable at the end of the year, Weighted Average Exercise Price (in dollars per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue":  {
                "auth_ref":  [
                    "r346"
                    ],
                "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 all options exercised"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod":  {
                "auth_ref":  [
                    "r339"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "For presentations that combine terminations, 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 or that expired.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period",
                            "negatedLabel":  "Expired or forfeited (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice":  {
                "auth_ref":  [
                    "r339"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Weighted average price of options that were either forfeited or expired.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price",
                            "terseLabel":  "Expired or forfeited, Weighted Average Exercise Price (in dollars per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue":  {
                "auth_ref":  [
                    "r353"
                    ],
                "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, options outstanding"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber":  {
                "auth_ref":  [
                    "r335",
                    "r353"
                    ],
                "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":  "Outstanding at the end of the year (in shares)",
                            "periodStartLabel":  "Outstanding at the beginning of the year (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "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":  "Number of shares"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice":  {
                "auth_ref":  [
                    "r334"
                    ],
                "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":  "Outstanding at the end of the year, Weighted Average Exercise Price (in dollars per share)",
                            "periodStartLabel":  "Outstanding at the beginning of the year, Weighted Average Exercise Price (in dollars per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain":  {
                "auth_ref":  [
                    "r328",
                    "r331"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Award under share-based payment arrangement.",
                            "label":  "Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain]",
                            "terseLabel":  "Equity Award [Domain]"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansOutstandingAndExercisableOptionsDetails",
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails",
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "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":  "Exercised, Weighted Average Exercise Price (in dollars per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy":  {
                "auth_ref":  [
                    "r119",
                    "r329",
                    "r332"
                    ],
                "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 Compensation, Option and Incentive Plans Policy [Policy Text Block]",
                            "terseLabel":  "Stock-Based Compensation"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationOptionAndIncentivePlansPolicy",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis":  {
                "auth_ref":  [
                    "r350"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by range of option prices pertaining to options granted.",
                            "label":  "Exercise Price Range [Axis]"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansOutstandingAndExercisableOptionsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain":  {
                "auth_ref":  [
                    "r351"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Supplementary information on outstanding and exercisable share awards as of the balance sheet date which stratifies outstanding options by ranges of exercise prices.",
                            "label":  "Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Domain]",
                            "terseLabel":  "Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain]"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansOutstandingAndExercisableOptionsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems":  {
                "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, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]",
                            "terseLabel":  "Stock Option Plans"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansOutstandingAndExercisableOptionsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit":  {
                "auth_ref":  [
                    "r351"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.",
                            "label":  "Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit",
                            "terseLabel":  "Range of Exercise Price, Lower limit (in dollars per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansOutstandingAndExercisableOptionsDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions":  {
                "auth_ref":  [
                    "r344"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.",
                            "label":  "Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options",
                            "terseLabel":  "Options Exercisable (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansOutstandingAndExercisableOptionsDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions":  {
                "auth_ref":  [
                    "r335"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.",
                            "label":  "Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options",
                            "verboseLabel":  "Outstanding, options (in shares)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansOutstandingAndExercisableOptionsDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit":  {
                "auth_ref":  [
                    "r351"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.",
                            "label":  "Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit",
                            "terseLabel":  "Range of Exercise Price, Upper limit (in dollars per share)"
                            }
                        }
                    },
                "localname":  "ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansOutstandingAndExercisableOptionsDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1":  {
                "auth_ref":  [
                    "r353"
                    ],
                "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, options exercisable"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1":  {
                "auth_ref":  [
                    "r353"
                    ],
                "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, stock options exercisable (in years)"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Number of non-vested options outstanding.",
                            "label":  "Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares",
                            "terseLabel":  "Non-vested"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward":  {
                "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, Nonvested, Number of Shares [Roll Forward]",
                            "terseLabel":  "Changes in non-vested stock options"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2":  {
                "auth_ref":  [
                    "r348"
                    ],
                "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, stock options outstanding (in years)"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2":  {
                "auth_ref":  [
                    "r349"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
                            "label":  "Share-based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Remaining Contractual Term",
                            "terseLabel":  "Weighted Average Remaining Contractual Term"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansOutstandingAndExercisableOptionsDetails"
                    ],
                "xbrltype":  "durationItemType"
                },
            "us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1":  {
                "auth_ref":  [
                    "r335"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.",
                            "label":  "Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price",
                            "terseLabel":  "Weighted Average Exercise Price Per Share (in dollars per share)"
                            }
                        }
                    },
                "localname":  "SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansOutstandingAndExercisableOptionsDetails"
                    ],
                "xbrltype":  "perShareItemType"
                },
            "us-gaap_SignificantAccountingPoliciesTextBlock":  {
                "auth_ref":  [
                    "r130"
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_StateAndLocalJurisdictionMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Designated tax department of a state or local government entitled to levy and collect income taxes from the entity.",
                            "label":  "State And Local Jurisdiction [Member]",
                            "terseLabel":  "State"
                            }
                        }
                    },
                "localname":  "StateAndLocalJurisdictionMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_StatementEquityComponentsAxis":  {
                "auth_ref":  [
                    "r53",
                    "r261"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by component of equity.",
                            "label":  "Equity Components [Axis]"
                            }
                        }
                    },
                "localname":  "StatementEquityComponentsAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityAccumulatedOtherComprehensiveLossDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "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",
                            "verboseLabel":  "Accumulated Other Comprehensive Loss"
                            }
                        }
                    },
                "localname":  "StatementLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityAccumulatedOtherComprehensiveLossDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionShareBasedCompensationAndForeignCurrenciesDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StatementOfCashFlowsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "CONSOLIDATED STATEMENTS OF CASH FLOWS"
                            }
                        }
                    },
                "localname":  "StatementOfCashFlowsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StatementOfFinancialPositionAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "CONSOLIDATED BALANCE SHEETS"
                            }
                        }
                    },
                "localname":  "StatementOfFinancialPositionAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME"
                            }
                        }
                    },
                "localname":  "StatementOfIncomeAndComprehensiveIncomeAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StatementOfStockholdersEquityAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "CONSOLIDATED STATEMENTS OF EQUITY"
                            }
                        }
                    },
                "localname":  "StatementOfStockholdersEquityAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StatementTable":  {
                "auth_ref":  [
                    ],
                "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]"
                            }
                        }
                    },
                "localname":  "StatementTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityAccumulatedOtherComprehensiveLossDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRevenueRecognitionShareBasedCompensationAndForeignCurrenciesDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised":  {
                "auth_ref":  [
                    "r27",
                    "r28",
                    "r261",
                    "r266",
                    "r337"
                    ],
                "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)",
                            "verboseLabel":  "Stock options exercised (in shares)"
                            }
                        }
                    },
                "localname":  "StockIssuedDuringPeriodSharesStockOptionsExercised",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityShareRepurchasePlanPreferredStockDetails",
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansStockOptionActivityDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised":  {
                "auth_ref":  [
                    "r53",
                    "r261",
                    "r266"
                    ],
                "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":  "Stock options exercised"
                            }
                        }
                    },
                "localname":  "StockIssuedDuringPeriodValueStockOptionsExercised",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.",
                            "label":  "Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased",
                            "terseLabel":  "Remaining number of common stock authorized for repurchase under stock repurchase program (in shares)"
                            }
                        }
                    },
                "localname":  "StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityShareRepurchasePlanPreferredStockDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_StockRepurchasedAndRetiredDuringPeriodShares":  {
                "auth_ref":  [
                    "r27",
                    "r28",
                    "r261",
                    "r266"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Number of shares that have been repurchased and retired during the period.",
                            "label":  "Stock Repurchased and Retired During Period, Shares",
                            "terseLabel":  "Repurchase of common shares (in shares)"
                            }
                        }
                    },
                "localname":  "StockRepurchasedAndRetiredDuringPeriodShares",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityShareRepurchasePlanPreferredStockDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_StockRepurchasedAndRetiredDuringPeriodValue":  {
                "auth_ref":  [
                    "r27",
                    "r28",
                    "r261",
                    "r266"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Equity impact of the value of stock that has been repurchased and retired during the period.  The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).",
                            "label":  "Stock Repurchased and Retired During Period, Value",
                            "negatedLabel":  "Repurchase of common shares",
                            "verboseLabel":  "Value of shares repurchased"
                            }
                        }
                    },
                "localname":  "StockRepurchasedAndRetiredDuringPeriodValue",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquityShareRepurchasePlanPreferredStockDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_StockholdersEquity":  {
                "auth_ref":  [
                    "r28",
                    "r32",
                    "r33",
                    "r182"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest",
                        "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",
                            "totalLabel":  "Total Reliance stockholders' equity"
                            }
                        }
                    },
                "localname":  "StockholdersEquity",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest":  {
                "auth_ref":  [
                    "r409",
                    "r410",
                    "r421"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets":  {
                        "order":  7.0,
                        "parentTag":  "us-gaap_LiabilitiesAndStockholdersEquity",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests.  Amount excludes temporary equity.  Alternate caption for the concept is permanent equity.",
                            "label":  "Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest",
                            "periodEndLabel":  "Balance",
                            "periodStartLabel":  "Balance",
                            "totalLabel":  "Total equity"
                            }
                        }
                    },
                "localname":  "StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfEquity"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]",
                            "terseLabel":  "Equity:"
                            }
                        }
                    },
                "localname":  "StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedBalanceSheets"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StockholdersEquityNoteAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Equity"
                            }
                        }
                    },
                "localname":  "StockholdersEquityNoteAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "xbrltype":  "stringItemType"
                },
            "us-gaap_StockholdersEquityNoteDisclosureTextBlock":  {
                "auth_ref":  [
                    "r267"
                    ],
                "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":  "Equity"
                            }
                        }
                    },
                "localname":  "StockholdersEquityNoteDisclosureTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEquity"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_SummaryOfIncomeTaxContingenciesTextBlock":  {
                "auth_ref":  [
                    "r367",
                    "r374",
                    "r376"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies.  Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months.",
                            "label":  "Summary of Income Tax Contingencies [Table Text Block]",
                            "terseLabel":  "Schedule of reconciliation of the beginning and ending balances of the total amounts of unrecognized tax benefits"
                            }
                        }
                    },
                "localname":  "SummaryOfIncomeTaxContingenciesTextBlock",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesTables"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_SupplementalCashFlowInformationAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Supplemental Cash Flow Information [Abstract]",
                            "terseLabel":  "Supplemental cash flow information:"
                            }
                        }
                    },
                "localname":  "SupplementalCashFlowInformationAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Plan designed to provide limited group of employees with supplemental retirement benefits, in addition to other pension benefits.  Includes, but is not limited to, defined benefit and defined contribution plans.",
                            "label":  "Supplemental Employee Retirement Plan Defined Benefit [Member]",
                            "terseLabel":  "SERPs"
                            }
                        }
                    },
                "localname":  "SupplementalEmployeeRetirementPlanDefinedBenefitMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPostretirementPlanAndSummaryInformationForAllDefinedBenefitPlansDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSummaryOfSerpsAndDefinedBenefitPlansDetails",
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsSupplementalBonusPlanDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_TangibleAssetImpairmentCharges":  {
                "auth_ref":  [
                    "r0",
                    "r236"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_AssetImpairmentCharges",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.",
                            "label":  "Tangible Asset Impairment Charges",
                            "terseLabel":  "Impairment loss of property, plant and equipment",
                            "verboseLabel":  "Property, plant and equipment"
                            }
                        }
                    },
                "localname":  "TangibleAssetImpairmentCharges",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureImpairmentAndRestructuringChargesDetails",
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLongLivedAssetsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit":  {
                "auth_ref":  [
                    "r390"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of reasonable estimate for income tax expense (benefit) for which accounting for tax effect for remeasurement of deferred tax from change in tax rate is incomplete pursuant to Tax Cuts and Jobs Act.",
                            "label":  "Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Provisional Income Tax Expense (Benefit)",
                            "negatedTotalLabel":  "Tax benefit, net"
                            }
                        }
                    },
                "localname":  "TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesSummaryReconciliationAndOtherDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_TradeNamesMember":  {
                "auth_ref":  [
                    "r402"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Rights acquired through registration of a business name to gain or protect exclusive use thereof.",
                            "label":  "Trade Names [Member]",
                            "terseLabel":  "Trade names"
                            }
                        }
                    },
                "localname":  "TradeNamesMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureAcquisitionsDetails",
                    "http://www.rsac.com/role/DisclosureIntangibleAssetsNetDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain":  {
                "auth_ref":  [
                    "r463"
                    ],
                "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":  "Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain]",
                            "terseLabel":  "Financial Instruments [Domain]"
                            }
                        }
                    },
                "localname":  "TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_TypeOfAdoptionMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Adoption and early adoption of sources of change to generally accepted accounting principles (GAAP) in the United States.  The FASB released the FASB Accounting Standards Codification as the authoritative source of literature effective for interim and annual periods ending after September 15, 2009.  As part of the Codification process, the FASB issues Accounting Standards Updates to amend the Codification but otherwise the Accounting Standards Updates are not authoritative in their own right.  All previous accounting standards (such as FASB Statements of Financial Accounting Standards, FASB Interpretations, FASB Staff Positions, Emerging Issues Task Force Consensuses, other pronouncements of the FASB or other designated bodies, or other forms of GAAP are considered accounting pronouncements) were superseded upon the adoption of the Codification.  For an interim period, references to the superseded standards are included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.",
                            "label":  "Type Of Adoption [Member]",
                            "terseLabel":  "Type of Adoption [Domain]"
                            }
                        }
                    },
                "localname":  "TypeOfAdoptionMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesImpactOfRecentlyIssuedAccountingStandardsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_USGovernmentAgenciesDebtSecuritiesMember":  {
                "auth_ref":  [
                    "r293",
                    "r472"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Debentures, notes, and other debt securities issued by US government agencies, for example, but not limited to, Government National Mortgage Association (GNMA or Ginnie Mae).  Excludes US treasury securities and debt issued by government-sponsored Enterprises (GSEs), for example, but is not limited to, Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB).",
                            "label":  "U S Government Agencies Debt Securities [Member]",
                            "terseLabel":  "U.S. government, state, and agency"
                            }
                        }
                    },
                "localname":  "USGovernmentAgenciesDebtSecuritiesMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEmployeeBenefitsPlanAssetsAndInvestmentPolicyDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain":  {
                "auth_ref":  [
                    "r251"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "General description of the goods or services to be purchased from the counterparty to the unconditional purchase arrangement.",
                            "label":  "Unconditional Purchase Obligation Category Of Goods Or Services Acquired [Domain]",
                            "terseLabel":  "Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain]"
                            }
                        }
                    },
                "localname":  "UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesPurchaseCommitmentsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_UnionizedEmployeesConcentrationRiskMember":  {
                "auth_ref":  [
                    "r158"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Reflects the percentage that unionized employees, in either labor costs for the period or number of personnel as of the balance sheet date or on average for the period, are to a specified benchmark, such as total operating expenses, total labor costs, total corresponding number of personnel.  Risk is the materially adverse effects of strikes and unfavorable contract negotiations with employees covered by collective bargaining arrangements.",
                            "label":  "Unionized Employees Concentration Risk [Member]",
                            "terseLabel":  "Employees covered by collective bargaining agreements"
                            }
                        }
                    },
                "localname":  "UnionizedEmployeesConcentrationRiskMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_UnrecognizedTaxBenefits":  {
                "auth_ref":  [
                    "r359",
                    "r369"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of unrecognized tax benefits.",
                            "label":  "Unrecognized Tax Benefits",
                            "periodEndLabel":  "Balance at the end of the year",
                            "periodStartLabel":  "Balance at the beginning of the year"
                            }
                        }
                    },
                "localname":  "UnrecognizedTaxBenefits",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions":  {
                "auth_ref":  [
                    "r370"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.",
                            "label":  "Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions",
                            "negatedLabel":  "Decreases in tax positions for prior years"
                            }
                        }
                    },
                "localname":  "UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities":  {
                "auth_ref":  [
                    "r371"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.",
                            "label":  "Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities",
                            "negatedLabel":  "Settlements"
                            }
                        }
                    },
                "localname":  "UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued":  {
                "auth_ref":  [
                    "r366"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.",
                            "label":  "Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued",
                            "terseLabel":  "Accrued interest and penalties on uncertain tax positions"
                            }
                        }
                    },
                "localname":  "UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions":  {
                "auth_ref":  [
                    "r370"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.",
                            "label":  "Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions",
                            "terseLabel":  "Increases in tax positions for prior years"
                            }
                        }
                    },
                "localname":  "UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations":  {
                "auth_ref":  [
                    "r372"
                    ],
                "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",
                            "negatedLabel":  "Lapse of statute of limitations"
                            }
                        }
                    },
                "localname":  "UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate":  {
                "auth_ref":  [
                    "r373"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.",
                            "label":  "Unrecognized Tax Benefits that Would Impact Effective Tax Rate",
                            "terseLabel":  "Unrecognized tax benefits, if recognized, would affect the effective tax rate"
                            }
                        }
                    },
                "localname":  "UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary":  {
                "auth_ref":  [
                    "r249"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesPurchaseCommitmentsDetails":  {
                        "order":  2.0,
                        "parentTag":  "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the next fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Unrecorded Unconditional Purchase Obligation, Due in Next Twelve Months",
                            "terseLabel":  "2020"
                            }
                        }
                    },
                "localname":  "UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesPurchaseCommitmentsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary":  {
                "auth_ref":  [
                    "r249"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesPurchaseCommitmentsDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the second fiscal year following the latest fiscal year.  Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
                            "label":  "Unrecorded Unconditional Purchase Obligation, Due within Two Years",
                            "terseLabel":  "2021"
                            }
                        }
                    },
                "localname":  "UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesPurchaseCommitmentsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount":  {
                "auth_ref":  [
                    "r249"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesPurchaseCommitmentsDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).",
                            "label":  "Unrecorded Unconditional Purchase Obligation",
                            "totalLabel":  "Total amount of purchase commitments"
                            }
                        }
                    },
                "localname":  "UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesPurchaseCommitmentsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis":  {
                "auth_ref":  [
                    "r248",
                    "r250"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Pertinent information about unrecorded unconditional purchase arrangements to acquire goods or services, by category of goods or services. arrangements to acquire goods or services, by category of goods or services.",
                            "label":  "Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis]"
                            }
                        }
                    },
                "localname":  "UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesPurchaseCommitmentsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems":  {
                "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":  "Unrecorded Unconditional Purchase Obligation [Line Items]",
                            "terseLabel":  "Purchase Commitments"
                            }
                        }
                    },
                "localname":  "UnrecordedUnconditionalPurchaseObligationLineItems",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesPurchaseCommitmentsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_UnrecordedUnconditionalPurchaseObligationTable":  {
                "auth_ref":  [
                    "r248",
                    "r250"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Describes each unrecorded unconditional purchase obligation arrangement to purchase goods and services that extend over multiple periods, any assets pledged to secure payment, and the fixed or determinable amount of payments due in each of the next five years and thereafter.",
                            "label":  "Unrecorded Unconditional Purchase Obligation [Table]"
                            }
                        }
                    },
                "localname":  "UnrecordedUnconditionalPurchaseObligationTable",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesPurchaseCommitmentsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_UseOfEstimates":  {
                "auth_ref":  [
                    "r152",
                    "r153",
                    "r154",
                    "r155",
                    "r161",
                    "r162",
                    "r163"
                    ],
                "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":  "Accounting Estimates"
                            }
                        }
                    },
                "localname":  "UseOfEstimates",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
                    ],
                "xbrltype":  "textBlockItemType"
                },
            "us-gaap_ValuationAllowancesAndReservesBalance":  {
                "auth_ref":  [
                    "r129"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of valuation and qualifying accounts and reserves.",
                            "label":  "Valuation Allowances and Reserves, Balance",
                            "periodEndLabel":  "Balance at End of Year",
                            "periodStartLabel":  "Balance at Beginning of Year"
                            }
                        }
                    },
                "localname":  "ValuationAllowancesAndReservesBalance",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureScheduleIiValuationAndQualifyingAccountsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense":  {
                "auth_ref":  [
                    "r129"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense.",
                            "label":  "Valuation Allowances and Reserves, Charged to Cost and Expense",
                            "terseLabel":  "Additions Charged to Costs and Expenses"
                            }
                        }
                    },
                "localname":  "ValuationAllowancesAndReservesChargedToCostAndExpense",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureScheduleIiValuationAndQualifyingAccountsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts":  {
                "auth_ref":  [
                    "r129"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of increase in valuation and qualifying accounts and reserves from charge to accounts other than cost and expense.",
                            "label":  "Valuation Allowances and Reserves, Charged to Other Accounts",
                            "terseLabel":  "Amounts Charged to Other Accounts"
                            }
                        }
                    },
                "localname":  "ValuationAllowancesAndReservesChargedToOtherAccounts",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureScheduleIiValuationAndQualifyingAccountsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ValuationAllowancesAndReservesDeductions":  {
                "auth_ref":  [
                    "r129"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Amount of decrease in valuation and qualifying accounts and reserves.",
                            "label":  "Valuation Allowances and Reserves, Deductions",
                            "terseLabel":  "Deductions"
                            }
                        }
                    },
                "localname":  "ValuationAllowancesAndReservesDeductions",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureScheduleIiValuationAndQualifyingAccountsDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "us-gaap_ValuationAllowancesAndReservesDomain":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Valuation and qualifying accounts and reserves.",
                            "label":  "Valuation Allowances And Reserves [Domain]",
                            "terseLabel":  "Valuation Allowances and Reserves [Domain]"
                            }
                        }
                    },
                "localname":  "ValuationAllowancesAndReservesDomain",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureScheduleIiValuationAndQualifyingAccountsDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_ValuationAllowancesAndReservesTypeAxis":  {
                "auth_ref":  [
                    "r129"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by valuation and qualifying accounts and reserves.",
                            "label":  "Valuation Allowances and Reserves Type [Axis]"
                            }
                        }
                    },
                "localname":  "ValuationAllowancesAndReservesTypeAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureScheduleIiValuationAndQualifyingAccountsDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_VariableRateAxis":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by type of variable rate.",
                            "label":  "Variable Rate [Axis]"
                            }
                        }
                    },
                "localname":  "VariableRateAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "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/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureDebtOtherDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_VestingAxis":  {
                "auth_ref":  [
                    "r353"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Information by vesting schedule of award under share-based payment arrangement.",
                            "label":  "Vesting [Axis]"
                            }
                        }
                    },
                "localname":  "VestingAxis",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_VestingDomain":  {
                "auth_ref":  [
                    "r353"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Vesting schedule of award under share-based payment arrangement.",
                            "label":  "Vesting [Domain]",
                            "terseLabel":  "Vesting [Domain]"
                            }
                        }
                    },
                "localname":  "VestingDomain",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureStockBasedCompensationPlansRsusDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding":  {
                "auth_ref":  [
                    "r139",
                    "r144"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEarningsPerShareDetails":  {
                        "order":  null,
                        "parentTag":  null,
                        "root":  true,
                        "weight":  null
                        }
                    },
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.",
                            "label":  "Weighted Average Number of Shares Outstanding, Diluted",
                            "terseLabel":  "Diluted (in shares)",
                            "totalLabel":  "Weighted average diluted shares outstanding (in shares)"
                            }
                        }
                    },
                "localname":  "WeightedAverageNumberOfDilutedSharesOutstanding",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEarningsPerShareDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic":  {
                "auth_ref":  [
                    "r137",
                    "r144"
                    ],
                "calculation":  {
                    "http://www.rsac.com/role/DisclosureEarningsPerShareDetails":  {
                        "order":  1.0,
                        "parentTag":  "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding",
                        "weight":  1.0
                        }
                    },
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.",
                            "label":  "Weighted Average Number of Shares Outstanding, Basic",
                            "terseLabel":  "Weighted average shares outstanding (in shares)",
                            "verboseLabel":  "Basic (in shares)"
                            }
                        }
                    },
                "localname":  "WeightedAverageNumberOfSharesOutstandingBasic",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEarningsPerShareDetails",
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Weighted Average Number of Shares Outstanding, Basic [Abstract]",
                            "terseLabel":  "Denominator for basic earnings per share:",
                            "verboseLabel":  "Shares used in computing earning per share:"
                            }
                        }
                    },
                "localname":  "WeightedAverageNumberOfSharesOutstandingBasicAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/StatementConsolidatedStatementsOfIncome"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "label":  "Weighted Average Number of Shares Outstanding Reconciliation [Abstract]",
                            "terseLabel":  "Denominator:"
                            }
                        }
                    },
                "localname":  "WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureEarningsPerShareDetails"
                    ],
                "xbrltype":  "stringItemType"
                },
            "us-gaap_WorkforceSubjectToCollectiveBargainingArrangementsExpiringWithinOneYearMember":  {
                "auth_ref":  [
                    "r158"
                    ],
                "lang":  {
                    "en-US":  {
                        "role":  {
                            "documentation":  "The number of employees covered by a collective bargaining agreement that will expire within one year after the balance sheet date, when it serves as a benchmark in a concentration of risk calculation.",
                            "label":  "Workforce Subject To Collective Bargaining Arrangements Expiring Within One Year [Member]",
                            "terseLabel":  "Employees covered by collective bargaining agreements that expire during 2020"
                            }
                        }
                    },
                "localname":  "WorkforceSubjectToCollectiveBargainingArrangementsExpiringWithinOneYearMember",
                "nsuri":  "http://fasb.org/us-gaap/2019-01-31",
                "presentation":  [
                    "http://www.rsac.com/role/DisclosureCommitmentsAndContingenciesCollectiveBargainingAgreementsAndEnvironmentalContingenciesDetails"
                    ],
                "xbrltype":  "domainItemType"
                }
            },
        "unitCount":  9
        }
    },
"std_ref":  {
    "r0":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "205",
        "URI":  "http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760"
        },
    "r1":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765"
        },
    "r10":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6935-107765"
        },
    "r100":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585"
        },
    "r101":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585"
        },
    "r102":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585"
        },
    "r103":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585"
        },
    "r104":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "17",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3367-108585"
        },
    "r105":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3000-108585"
        },
    "r106":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "24",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585"
        },
    "r107":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "25",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(e)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585"
        },
    "r108":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "25",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585"
        },
    "r109":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "28",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585"
        },
    "r11":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766"
        },
    "r110":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "28",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585"
        },
    "r111":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "28",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585"
        },
    "r112":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3044-108585"
        },
    "r113":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4273-108586"
        },
    "r114":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586"
        },
    "r115":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586"
        },
    "r116":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586"
        },
    "r117":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586"
        },
    "r118":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586"
        },
    "r119":  {
        "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"
        },
    "r12":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r120":  {
        "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"
        },
    "r121":  {
        "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=26873400&loc=d3e23780-122690"
        },
    "r122":  {
        "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=26873400&loc=d3e23780-122690"
        },
    "r123":  {
        "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=26873400&loc=d3e23780-122690"
        },
    "r124":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.4-08.(h)(2))",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/extlink&oid=26873400&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=26873400&loc=d3e23780-122690"
        },
    "r126":  {
        "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=26873400&loc=d3e24072-122690"
        },
    "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=26873400&loc=d3e24072-122690"
        },
    "r128":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.12-09(ColumnA))",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690"
        },
    "r129":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.12-09)",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690"
        },
    "r13":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(10))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
        },
    "r130":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "235",
        "URI":  "http://asc.fasb.org/topic&trid=2122369"
        },
    "r131":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794"
        },
    "r132":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "11",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794"
        },
    "r133":  {
        "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"
        },
    "r134":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "250",
        "URI":  "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22644-107794"
        },
    "r135":  {
        "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"
        },
    "r136":  {
        "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"
        },
    "r137":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1448-109256"
        },
    "r138":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "11",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1377-109256"
        },
    "r139":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "16",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1505-109256"
        },
    "r14":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(11))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
        },
    "r140":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1252-109256"
        },
    "r141":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "28A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1500-109256"
        },
    "r142":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "60B",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=117326831&loc=SL5780133-109256"
        },
    "r143":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1337-109256"
        },
    "r144":  {
        "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"
        },
    "r145":  {
        "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"
        },
    "r146":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257"
        },
    "r147":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "52",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/extlink&oid=117327953&loc=d3e4984-109258"
        },
    "r148":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "260",
        "URI":  "http://asc.fasb.org/topic&trid=2144383"
        },
    "r149":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "270",
        "URI":  "http://asc.fasb.org/extlink&oid=116846552&loc=d3e543-108305"
        },
    "r15":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r150":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "270",
        "URI":  "http://asc.fasb.org/extlink&oid=118952077&loc=d3e1280-108306"
        },
    "r151":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "270",
        "URI":  "http://asc.fasb.org/topic&trid=2126967"
        },
    "r152":  {
        "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"
        },
    "r153":  {
        "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"
        },
    "r154":  {
        "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"
        },
    "r155":  {
        "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"
        },
    "r156":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "16",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "275",
        "URI":  "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6327-108592"
        },
    "r157":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "18",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "275",
        "URI":  "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592"
        },
    "r158":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "275",
        "URI":  "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592"
        },
    "r159":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "275",
        "URI":  "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592"
        },
    "r16":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r160":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "21",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "275",
        "URI":  "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6442-108592"
        },
    "r161":  {
        "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"
        },
    "r162":  {
        "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"
        },
    "r163":  {
        "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"
        },
    "r164":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "21",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8721-108599"
        },
    "r165":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "22",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
        },
    "r166":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "22",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
        },
    "r167":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "22",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
        },
    "r168":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "22",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(e)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
        },
    "r169":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "22",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(h)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
        },
    "r17":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r170":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "22",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
        },
    "r171":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "25",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8813-108599"
        },
    "r172":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "30",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8906-108599"
        },
    "r173":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "32",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599"
        },
    "r174":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "32",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599"
        },
    "r175":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "40",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=115929826&loc=d3e9031-108599"
        },
    "r176":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "41",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599"
        },
    "r177":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "280",
        "URI":  "http://asc.fasb.org/topic&trid=2134510"
        },
    "r178":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "310",
        "URI":  "http://asc.fasb.org/extlink&oid=118952595&loc=d3e4647-111522"
        },
    "r179":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "310",
        "URI":  "http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522"
        },
    "r18":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(15))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
        },
    "r180":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "9",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "310",
        "URI":  "http://asc.fasb.org/extlink&oid=118952595&loc=d3e4531-111522"
        },
    "r181":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "310",
        "URI":  "http://asc.fasb.org/extlink&oid=118936363&loc=d3e5074-111524"
        },
    "r182":  {
        "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"
        },
    "r183":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)(1)",
        "Topic":  "323",
        "URI":  "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571"
        },
    "r184":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "325",
        "URI":  "http://asc.fasb.org/topic&trid=2197064"
        },
    "r185":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=118955202&loc=SL82895884-210446"
        },
    "r186":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "11",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919244-210447"
        },
    "r187":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447"
        },
    "r188":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447"
        },
    "r189":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919253-210447"
        },
    "r19":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(16))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
        },
    "r190":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "16",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919258-210447"
        },
    "r191":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919230-210447"
        },
    "r192":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=118955579&loc=SL82922888-210455"
        },
    "r193":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=118955579&loc=SL82922895-210455"
        },
    "r194":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "9",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=118955579&loc=SL82922900-210455"
        },
    "r195":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "30",
        "Topic":  "326",
        "URI":  "http://asc.fasb.org/extlink&oid=118942371&loc=SL82922954-210456"
        },
    "r196":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "30",
        "SubTopic":  "10",
        "Topic":  "330",
        "URI":  "http://asc.fasb.org/extlink&oid=68048583&loc=d3e3636-108311"
        },
    "r197":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "35",
        "SubTopic":  "10",
        "Topic":  "330",
        "URI":  "http://asc.fasb.org/extlink&oid=116846819&loc=d3e3927-108312"
        },
    "r198":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "330",
        "URI":  "http://asc.fasb.org/extlink&oid=116847112&loc=d3e4492-108314"
        },
    "r199":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "330",
        "URI":  "http://asc.fasb.org/extlink&oid=116847112&loc=d3e4556-108314"
        },
    "r2":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765"
        },
    "r20":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r200":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 5.L)",
        "Topic":  "330",
        "URI":  "http://asc.fasb.org/extlink&oid=27011343&loc=d3e99989-122729"
        },
    "r201":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 11.F)",
        "Topic":  "330",
        "URI":  "http://asc.fasb.org/extlink&oid=27011343&loc=d3e100079-122729"
        },
    "r202":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "330",
        "URI":  "http://asc.fasb.org/topic&trid=2126998"
        },
    "r203":  {
        "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"
        },
    "r204":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266"
        },
    "r205":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975"
        },
    "r206":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267"
        },
    "r207":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267"
        },
    "r208":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(e)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267"
        },
    "r209":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(f)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267"
        },
    "r21":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r210":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(g)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267"
        },
    "r211":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(h)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267"
        },
    "r212":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267"
        },
    "r213":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267"
        },
    "r214":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267"
        },
    "r215":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "SubTopic":  "20",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/subtopic&trid=2144439"
        },
    "r216":  {
        "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"
        },
    "r217":  {
        "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"
        },
    "r218":  {
        "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"
        },
    "r219":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(a)(1)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275"
        },
    "r22":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r220":  {
        "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"
        },
    "r221":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(b)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275"
        },
    "r222":  {
        "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"
        },
    "r223":  {
        "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"
        },
    "r224":  {
        "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"
        },
    "r225":  {
        "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"
        },
    "r226":  {
        "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"
        },
    "r227":  {
        "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"
        },
    "r228":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(b)",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
        },
    "r229":  {
        "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"
        },
    "r23":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r230":  {
        "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"
        },
    "r231":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "350",
        "URI":  "http://asc.fasb.org/topic&trid=2144416"
        },
    "r232":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "360",
        "URI":  "http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228"
        },
    "r233":  {
        "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"
        },
    "r234":  {
        "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"
        },
    "r235":  {
        "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"
        },
    "r236":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "360",
        "URI":  "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230"
        },
    "r237":  {
        "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"
        },
    "r238":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Topic":  "410",
        "URI":  "http://asc.fasb.org/extlink&oid=6393242&loc=d3e13185-110859"
        },
    "r239":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Topic":  "410",
        "URI":  "http://asc.fasb.org/extlink&oid=6393242&loc=d3e13231-110859"
        },
    "r24":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r240":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "30",
        "Topic":  "410",
        "URI":  "http://asc.fasb.org/extlink&oid=6571209&loc=d3e13669-110860"
        },
    "r241":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "SubTopic":  "30",
        "Topic":  "410",
        "URI":  "http://asc.fasb.org/subtopic&trid=2175709"
        },
    "r242":  {
        "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"
        },
    "r243":  {
        "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"
        },
    "r244":  {
        "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"
        },
    "r245":  {
        "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"
        },
    "r246":  {
        "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"
        },
    "r247":  {
        "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"
        },
    "r248":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "440",
        "URI":  "http://asc.fasb.org/extlink&oid=77896938&loc=d3e25287-109308"
        },
    "r249":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "440",
        "URI":  "http://asc.fasb.org/extlink&oid=77896938&loc=d3e25336-109308"
        },
    "r25":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r250":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "440",
        "URI":  "http://asc.fasb.org/extlink&oid=77896938&loc=d3e25336-109308"
        },
    "r251":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "440",
        "URI":  "http://asc.fasb.org/extlink&oid=77896938&loc=d3e25383-109308"
        },
    "r252":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "440",
        "URI":  "http://asc.fasb.org/topic&trid=2144648"
        },
    "r253":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "450",
        "URI":  "http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349"
        },
    "r254":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "450",
        "URI":  "http://asc.fasb.org/topic&trid=2127136"
        },
    "r255":  {
        "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"
        },
    "r256":  {
        "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"
        },
    "r257":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)(1)",
        "Topic":  "470",
        "URI":  "http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870"
        },
    "r258":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)(2)",
        "Topic":  "470",
        "URI":  "http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870"
        },
    "r259":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)(3)",
        "Topic":  "470",
        "URI":  "http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870"
        },
    "r26":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r260":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "470",
        "URI":  "http://asc.fasb.org/topic&trid=2208564"
        },
    "r261":  {
        "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"
        },
    "r262":  {
        "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"
        },
    "r263":  {
        "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"
        },
    "r264":  {
        "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"
        },
    "r265":  {
        "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"
        },
    "r266":  {
        "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=27012166&loc=d3e187085-122770"
        },
    "r267":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "505",
        "URI":  "http://asc.fasb.org/topic&trid=2208762"
        },
    "r268":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045"
        },
    "r269":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045"
        },
    "r27":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r270":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "8",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045"
        },
    "r271":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "91",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=118944142&loc=SL49130690-203046-203046"
        },
    "r272":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "91",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=118944142&loc=SL49130690-203046-203046"
        },
    "r273":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "65",
        "SubTopic":  "10",
        "Subparagraph":  "(i)(1)",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/extlink&oid=113356391&loc=SL49131195-203048"
        },
    "r274":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "606",
        "URI":  "http://asc.fasb.org/topic&trid=49130388"
        },
    "r275":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "610",
        "URI":  "http://asc.fasb.org/topic&trid=49130413"
        },
    "r276":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "15",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "712",
        "URI":  "http://asc.fasb.org/extlink&oid=6410066&loc=d3e79218-111664"
        },
    "r277":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "15",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "712",
        "URI":  "http://asc.fasb.org/extlink&oid=6410066&loc=d3e79218-111664"
        },
    "r278":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "25",
        "SubTopic":  "10",
        "Topic":  "712",
        "URI":  "http://asc.fasb.org/extlink&oid=6410138&loc=d3e79691-111665"
        },
    "r279":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=109237824&loc=d3e1703-114919"
        },
    "r28":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r280":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=109237824&loc=d3e1731-114919"
        },
    "r281":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r282":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)(1)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r283":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)(2)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r284":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)(4)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r285":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)(6)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r286":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)(7)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r287":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r288":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)(1)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r289":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)(3)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r29":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r290":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(c)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r291":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(d)(5)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r292":  {
        "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"
        },
    "r293":  {
        "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"
        },
    "r294":  {
        "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"
        },
    "r295":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(e)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r296":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(f)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r297":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(g)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r298":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(h)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r299":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(h)(1)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r3":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765"
        },
    "r30":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r300":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(h)(2)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r301":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(h)(3)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r302":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(h)(4)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r303":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(h)(5)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r304":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(h)(7)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r305":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(j)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r306":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(k)(1)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r307":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(k)(2)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r308":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(k)(3)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r309":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(n)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r31":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r310":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
        },
    "r311":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2410-114920"
        },
    "r312":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2417-114920"
        },
    "r313":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2417-114920"
        },
    "r314":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2417-114920"
        },
    "r315":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2439-114920"
        },
    "r316":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
        },
    "r317":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)(1)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
        },
    "r318":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)(2)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
        },
    "r319":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)(3)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
        },
    "r32":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r320":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)(4)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
        },
    "r321":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)(5)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
        },
    "r322":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)(7)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
        },
    "r323":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
        },
    "r324":  {
        "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"
        },
    "r325":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "60",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964"
        },
    "r326":  {
        "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"
        },
    "r327":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "7",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "80",
        "Subparagraph":  "(c)",
        "Topic":  "715",
        "URI":  "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450678-114947"
        },
    "r328":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901"
        },
    "r329":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901"
        },
    "r33":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r330":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)(1)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
        },
    "r331":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a),(g)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
        },
    "r332":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b),(f)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
        },
    "r333":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(1)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
        },
    "r334":  {
        "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=116856206&loc=d3e5070-113901"
        },
    "r335":  {
        "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=116856206&loc=d3e5070-113901"
        },
    "r336":  {
        "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=116856206&loc=d3e5070-113901"
        },
    "r337":  {
        "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=116856206&loc=d3e5070-113901"
        },
    "r338":  {
        "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=116856206&loc=d3e5070-113901"
        },
    "r339":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(1)(iv)(3)-(4)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
        },
    "r34":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r340":  {
        "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=116856206&loc=d3e5070-113901"
        },
    "r341":  {
        "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=116856206&loc=d3e5070-113901"
        },
    "r342":  {
        "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=116856206&loc=d3e5070-113901"
        },
    "r343":  {
        "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=116856206&loc=d3e5070-113901"
        },
    "r344":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(iii)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
        },
    "r345":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
        },
    "r346":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)(2)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
        },
    "r347":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(e)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
        },
    "r348":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(e)(1)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
        },
    "r349":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(e)(2)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
        },
    "r35":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r350":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(f)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
        },
    "r351":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(g)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
        },
    "r352":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(i)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
        },
    "r353":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
        },
    "r354":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/extlink&oid=116856206&loc=SL79508275-113901"
        },
    "r355":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "718",
        "URI":  "http://asc.fasb.org/topic&trid=2228938"
        },
    "r356":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "720",
        "URI":  "http://asc.fasb.org/topic&trid=2122503"
        },
    "r357":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "25",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=117330534&loc=d3e28680-109314"
        },
    "r358":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "25",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=117330534&loc=d3e28680-109314"
        },
    "r359":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10B",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=116821951&loc=SL37586934-109318"
        },
    "r36":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(6)(a))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
        },
    "r360":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "25",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=116821951&loc=d3e32247-109318"
        },
    "r361":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "28",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=116821951&loc=d3e32280-109318"
        },
    "r362":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=116821951&loc=d3e31917-109318"
        },
    "r363":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=116821951&loc=d3e31931-109318"
        },
    "r364":  {
        "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"
        },
    "r365":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319"
        },
    "r366":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319"
        },
    "r367":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319"
        },
    "r368":  {
        "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"
        },
    "r369":  {
        "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"
        },
    "r37":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(6)(b))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
        },
    "r370":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)(1)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
        },
    "r371":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)(3)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
        },
    "r372":  {
        "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"
        },
    "r373":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
        },
    "r374":  {
        "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"
        },
    "r375":  {
        "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"
        },
    "r376":  {
        "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"
        },
    "r377":  {
        "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"
        },
    "r378":  {
        "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"
        },
    "r379":  {
        "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"
        },
    "r38":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02(6)(c))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
        },
    "r380":  {
        "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"
        },
    "r381":  {
        "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"
        },
    "r382":  {
        "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"
        },
    "r383":  {
        "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"
        },
    "r384":  {
        "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"
        },
    "r385":  {
        "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"
        },
    "r386":  {
        "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"
        },
    "r387":  {
        "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"
        },
    "r388":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB TOPIC 6.I)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
        },
    "r389":  {
        "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"
        },
    "r39":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r390":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2A",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SAB Topic 5.EE.Q2(b))",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=116825942&loc=SL116722634-122817"
        },
    "r391":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324"
        },
    "r392":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "05",
        "SubTopic":  "30",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/extlink&oid=65884525&loc=d3e40913-109327"
        },
    "r393":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "740",
        "URI":  "http://asc.fasb.org/topic&trid=2144680"
        },
    "r394":  {
        "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"
        },
    "r395":  {
        "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"
        },
    "r396":  {
        "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"
        },
    "r397":  {
        "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"
        },
    "r398":  {
        "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"
        },
    "r399":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "37",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=116868840&loc=d3e2207-128464"
        },
    "r4":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765"
        },
    "r40":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r400":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(c)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472"
        },
    "r401":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472"
        },
    "r402":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=77890550&loc=d3e5263-128473"
        },
    "r403":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "20",
        "Subparagraph":  "(e)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=77890550&loc=d3e5263-128473"
        },
    "r404":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=77890550&loc=d3e5333-128473"
        },
    "r405":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "20",
        "Subparagraph":  "(c)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=77890550&loc=d3e5333-128473"
        },
    "r406":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "38",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=77890550&loc=d3e5504-128473"
        },
    "r407":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "30",
        "Subparagraph":  "(d)",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479"
        },
    "r408":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "Topic":  "805",
        "URI":  "http://asc.fasb.org/topic&trid=2303972"
        },
    "r409":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=108774443&loc=SL4568447-111683"
        },
    "r41":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r410":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "16",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=108774443&loc=SL4568740-111683"
        },
    "r411":  {
        "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"
        },
    "r412":  {
        "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"
        },
    "r413":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "21",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=108774443&loc=SL4613674-111683"
        },
    "r414":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "23",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=108774443&loc=SL4569655-111683"
        },
    "r415":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "24",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=108774443&loc=SL4616395-111683"
        },
    "r416":  {
        "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"
        },
    "r417":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)(1)",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684"
        },
    "r418":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)(2)",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684"
        },
    "r419":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(c)(1)",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684"
        },
    "r42":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r420":  {
        "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"
        },
    "r421":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4I",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=116874947&loc=SL4590271-111686"
        },
    "r422":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4J",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=116874947&loc=SL4591551-111686"
        },
    "r423":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4K",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=116874947&loc=SL4591552-111686"
        },
    "r424":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.3A-02)",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=116822174&loc=d3e355033-122828"
        },
    "r425":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.3A-03)",
        "Topic":  "810",
        "URI":  "http://asc.fasb.org/extlink&oid=116822174&loc=d3e355100-122828"
        },
    "r426":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4D",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "815",
        "URI":  "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624177-113959"
        },
    "r427":  {
        "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"
        },
    "r428":  {
        "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"
        },
    "r429":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "825",
        "URI":  "http://asc.fasb.org/extlink&oid=118260190&loc=d3e13279-108611"
        },
    "r43":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r430":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "825",
        "URI":  "http://asc.fasb.org/extlink&oid=118260190&loc=d3e13531-108611"
        },
    "r431":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "21",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "825",
        "URI":  "http://asc.fasb.org/extlink&oid=118260190&loc=d3e13537-108611"
        },
    "r432":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "21",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "825",
        "URI":  "http://asc.fasb.org/extlink&oid=118260190&loc=d3e13537-108611"
        },
    "r433":  {
        "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"
        },
    "r434":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/extlink&oid=109240200&loc=d3e30700-110894"
        },
    "r435":  {
        "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"
        },
    "r436":  {
        "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"
        },
    "r437":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "20",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Subparagraph":  "(b,c)",
        "Topic":  "830",
        "URI":  "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
        },
    "r438":  {
        "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"
        },
    "r439":  {
        "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"
        },
    "r44":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r440":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Topic":  "835",
        "URI":  "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399"
        },
    "r441":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Topic":  "835",
        "URI":  "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399"
        },
    "r442":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "30",
        "Topic":  "835",
        "URI":  "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399"
        },
    "r443":  {
        "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"
        },
    "r444":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "40",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Subparagraph":  "(Note 3)",
        "Topic":  "840",
        "URI":  "http://asc.fasb.org/extlink&oid=82846649&loc=d3e38371-112697"
        },
    "r445":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "840",
        "URI":  "http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717"
        },
    "r446":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "65",
        "SubTopic":  "10",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=119364159&loc=SL77916155-209984"
        },
    "r447":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Subparagraph":  "(a)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977"
        },
    "r448":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977"
        },
    "r449":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "20",
        "Subparagraph":  "(c)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=77888419&loc=SL77918643-209977"
        },
    "r45":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r450":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(b)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
        },
    "r451":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(g)(1)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
        },
    "r452":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(g)(2)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
        },
    "r453":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(g)(3)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
        },
    "r454":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(g)(4)",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
        },
    "r455":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
        },
    "r456":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980"
        },
    "r457":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "53",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "20",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971"
        },
    "r458":  {
        "Name":  "Accounting Standards Codification",
        "Publisher":  "FASB",
        "SubTopic":  "20",
        "Topic":  "842",
        "URI":  "http://asc.fasb.org/subtopic&trid=77888251"
        },
    "r459":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "10",
        "Topic":  "850",
        "URI":  "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864"
        },
    "r46":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r460":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(bb)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=118948506&loc=d3e107207-111719"
        },
    "r461":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(bb)(1)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=118948506&loc=d3e107207-111719"
        },
    "r462":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "20",
        "Subparagraph":  "(bb)(2)",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=118948506&loc=d3e107207-111719"
        },
    "r463":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "50",
        "Topic":  "860",
        "URI":  "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746"
        },
    "r464":  {
        "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"
        },
    "r465":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "25",
        "SubTopic":  "20",
        "Topic":  "940",
        "URI":  "http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953"
        },
    "r466":  {
        "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=6876686&loc=d3e534808-122878"
        },
    "r467":  {
        "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=6876686&loc=d3e534808-122878"
        },
    "r468":  {
        "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=6876686&loc=d3e534808-122878"
        },
    "r469":  {
        "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=6876686&loc=d3e534808-122878"
        },
    "r47":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r470":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.9-03(22))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
        },
    "r471":  {
        "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=6876686&loc=d3e534808-122878"
        },
    "r472":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.9-03(6)(a)(1))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
        },
    "r473":  {
        "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=6876686&loc=d3e534808-122878"
        },
    "r474":  {
        "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=6876686&loc=d3e534808-122878"
        },
    "r475":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "220",
        "Subparagraph":  "(SX 210.9-04(15))",
        "Topic":  "942",
        "URI":  "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260"
        },
    "r476":  {
        "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=116637391&loc=SL114874048-224260"
        },
    "r477":  {
        "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=116637391&loc=SL114874048-224260"
        },
    "r478":  {
        "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"
        },
    "r479":  {
        "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=119400593&loc=d3e572229-122910"
        },
    "r48":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r480":  {
        "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=119400593&loc=d3e572229-122910"
        },
    "r481":  {
        "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=119400593&loc=d3e572229-122910"
        },
    "r482":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.7-03(a)(16))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
        },
    "r483":  {
        "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=119400593&loc=d3e572229-122910"
        },
    "r484":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.7-03(a)(24))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
        },
    "r485":  {
        "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=119400593&loc=d3e572229-122910"
        },
    "r486":  {
        "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=119400593&loc=d3e572229-122910"
        },
    "r487":  {
        "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=119400593&loc=d3e572229-122910"
        },
    "r488":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.7-03.13(b))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
        },
    "r489":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "210",
        "Subparagraph":  "(SX 210.7-03.5(c))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
        },
    "r49":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r490":  {
        "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=116637232&loc=SL114874131-224263"
        },
    "r491":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "220",
        "Subparagraph":  "(SX 210.7-04(8))",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263"
        },
    "r492":  {
        "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"
        },
    "r493":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "40",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=117419472&loc=d3e14931-158439"
        },
    "r494":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13H",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "40",
        "Subparagraph":  "(a)",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=117419784&loc=SL117783719-158441"
        },
    "r495":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13H",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "40",
        "Subparagraph":  "(b)",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=117419784&loc=SL117783719-158441"
        },
    "r496":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "80",
        "Subparagraph":  "(e)",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=117420044&loc=d3e19393-158473"
        },
    "r497":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1B",
        "Publisher":  "FASB",
        "Section":  "50",
        "SubTopic":  "825",
        "Topic":  "944",
        "URI":  "http://asc.fasb.org/extlink&oid=99380617&loc=SL75241803-196195"
        },
    "r498":  {
        "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=6589523&loc=d3e617274-123014"
        },
    "r499":  {
        "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"
        },
    "r5":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "3",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6801-107765"
        },
    "r50":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r500":  {
        "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=6590653&loc=d3e638233-123024"
        },
    "r501":  {
        "Name":  "Exchange Act",
        "Number":  "240",
        "Publisher":  "SEC",
        "Section":  "12",
        "Subsection":  "b"
        },
    "r502":  {
        "Name":  "Exchange Act",
        "Number":  "240",
        "Publisher":  "SEC",
        "Section":  "12",
        "Subsection":  "d1-1"
        },
    "r503":  {
        "Name":  "Forms 10-K, 10-Q, 20-F",
        "Number":  "240",
        "Publisher":  "SEC",
        "Section":  "13",
        "Subsection":  "a-1-"
        },
    "r504":  {
        "Name":  "Forms 10-K, 20-F, 40-F",
        "Number":  "240",
        "Publisher":  "SEC",
        "Section":  "15",
        "Subsection":  "d-1"
        },
    "r505":  {
        "Name":  "Regulation 12B",
        "Number":  "240",
        "Publisher":  "SEC",
        "Section":  "12",
        "Subsection":  "b-2"
        },
    "r506":  {
        "Name":  "Regulation S-T",
        "Number":  "232",
        "Publisher":  "SEC",
        "Section":  "405"
        },
    "r507":  {
        "Footnote":  "2",
        "Name":  "Regulation S-X (SX)",
        "Number":  "210",
        "Publisher":  "SEC",
        "Section":  "12",
        "Subsection":  "28"
        },
    "r508":  {
        "Footnote":  "4",
        "Name":  "Regulation S-X (SX)",
        "Number":  "210",
        "Publisher":  "SEC",
        "Section":  "12",
        "Subsection":  "29"
        },
    "r509":  {
        "Name":  "Regulation S-X (SX)",
        "Number":  "210",
        "Publisher":  "SEC",
        "Section":  "12",
        "Subsection":  "09"
        },
    "r51":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r52":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r53":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r54":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.3(a)(4))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
        },
    "r55":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r56":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.6(a))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
        },
    "r57":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.6(b))",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
        },
    "r58":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.6a)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
        },
    "r59":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.6b)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
        },
    "r6":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(d)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6812-107765"
        },
    "r60":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-02.6c)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
        },
    "r61":  {
        "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=6877327&loc=d3e13212-122682"
        },
    "r62":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580"
        },
    "r63":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a),(b),(c)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580"
        },
    "r64":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(i),(j),(k)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580"
        },
    "r65":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(i-k)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580"
        },
    "r66":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "10A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580"
        },
    "r67":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "11",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118930883&loc=d3e637-108580"
        },
    "r68":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118930883&loc=d3e681-108580"
        },
    "r69":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580"
        },
    "r7":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(e)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6812-107765"
        },
    "r70":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "17B",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118930883&loc=SL34724394-108580"
        },
    "r71":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580"
        },
    "r72":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580"
        },
    "r73":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1A",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580"
        },
    "r74":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1B",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580"
        },
    "r75":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1B",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580"
        },
    "r76":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "5",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118930883&loc=d3e557-108580"
        },
    "r77":  {
        "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"
        },
    "r78":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "15",
        "Publisher":  "FASB",
        "Section":  "55",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=118951672&loc=d3e1436-108581"
        },
    "r79":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "1",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.3-03(e))",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868656-224227"
        },
    "r8":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "4",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(f)",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6812-107765"
        },
    "r80":  {
        "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=116634182&loc=SL114868664-224227"
        },
    "r81":  {
        "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=116634182&loc=SL114868664-224227"
        },
    "r82":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03(10))",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
        },
    "r83":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03(2)(a))",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
        },
    "r84":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03(2)(d))",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
        },
    "r85":  {
        "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=116634182&loc=SL114868664-224227"
        },
    "r86":  {
        "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=116634182&loc=SL114868664-224227"
        },
    "r87":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Subparagraph":  "(SX 210.5-03)",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
        },
    "r88":  {
        "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=116634182&loc=SL114868664-224227"
        },
    "r89":  {
        "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=116634182&loc=SL114868664-224227"
        },
    "r9":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "6",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "210",
        "URI":  "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6911-107765"
        },
    "r90":  {
        "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=116634182&loc=SL114868664-224227"
        },
    "r91":  {
        "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=116634182&loc=SL114868664-224227"
        },
    "r92":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "2",
        "Publisher":  "FASB",
        "Section":  "S99",
        "SubTopic":  "10",
        "Topic":  "220",
        "URI":  "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
        },
    "r93":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "12",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585"
        },
    "r94":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "12",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585"
        },
    "r95":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585"
        },
    "r96":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(c)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585"
        },
    "r97":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "13",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585"
        },
    "r98":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(a)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585"
        },
    "r99":  {
        "Name":  "Accounting Standards Codification",
        "Paragraph":  "14",
        "Publisher":  "FASB",
        "Section":  "45",
        "SubTopic":  "10",
        "Subparagraph":  "(b)",
        "Topic":  "230",
        "URI":  "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585"
        }
    },
"version":  "2.1"
}

5 Subsequent Filings that Reference this Filing

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

 2/29/24  Reliance, Inc.                    10-K       12/31/23   97:13M                                    Toppan Merrill Bridge/FA
 2/28/23  Reliance Steel & Aluminum Co.     10-K       12/31/22   98:14M                                    Toppan Merrill Bridge/FA
 2/24/22  Reliance Steel & Aluminum Co.     10-K       12/31/21   96:13M                                    Toppan Merrill Bridge/FA
 2/25/21  Reliance Steel & Aluminum Co.     10-K       12/31/20  101:14M                                    Toppan Merrill Bridge/FA
12/11/20  Reliance Steel & Aluminum Co.     S-8        12/11/20    3:92K                                    Toppan Merrill/FA
↑Top
Filing Submission 0001558370-20-001637   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)
Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
About — Privacy — Redactions — Help — Tue., May 7, 10:44:02.8pm ET