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

Bristow Group Inc – ‘10-K’ for 3/31/19 – ‘XML’

On:  Monday, 10/28/19, at 4:57pm ET   ·   For:  3/31/19   ·   Accession #:  73887-19-46   ·   File #:  1-31617

Previous ‘10-K’:  ‘10-K/A’ on 6/19/19 for 3/31/18   ·   Latest ‘10-K’:  This Filing

Find Words in Filings emoji
 		  in    Show  and   ↓Hints

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

10/28/19  Bristow Group Inc                 10-K        3/31/19  137:32M

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   3.21M 
 2: EX-4.10     Instrument Defining the Rights of Security Holders  HTML     71K 
 3: EX-10.83    Material Contract                                   HTML    124K 
 4: EX-10.88    Material Contract                                   HTML     52K 
 5: EX-10.89    Material Contract                                   HTML     90K 
 6: EX-10.90    Material Contract                                   HTML     92K 
 7: EX-21       Subsidiaries List                                   HTML     76K 
 8: EX-24       Power of Attorney                                   HTML     68K 
 9: EX-31.1     Certification -- §302 - SOA'02                      HTML     46K 
10: EX-31.2     Certification -- §302 - SOA'02                      HTML     46K 
11: EX-32.1     Certification -- §906 - SOA'02                      HTML     41K 
12: EX-32.2     Certification -- §906 - SOA'02                      HTML     41K 
99: R1          Document and Entity Information                     HTML     72K 
29: R2          Consolidated Statements of Operations               HTML    113K 
71: R3          Consolidated Statements of Comprehensive Loss       HTML     74K 
120: R4          Consolidated Statements of Comprehensive Loss       HTML     46K  
                (Parenthetical)                                                  
102: R5          Consolidated Balance Sheets                         HTML    166K  
32: R6          Consolidated Balance Sheets (Parenthetical)         HTML     50K 
74: R7          Consolidated Statements of Cash Flows               HTML    147K 
117: R8          Consolidated Statements of Stockholders'            HTML    134K  
                Investment and Redeemable Noncontrolling Interests               
104: R9          Consolidated Statements of Stockholders'            HTML     43K  
                Investment and Redeemable Noncontrolling Interests               
                (Parenthetical)                                                  
127: R10         Operations, Basis of Presentation and Summary of    HTML    375K  
                Significant Accounting Policies                                  
76: R11         Revenue Recognition                                 HTML    112K 
38: R12         Variable Interest Entities and Other Investments    HTML    220K 
                in Significant Affiliates                                        
50: R13         Property and Equipment, Assets Held for Sale and    HTML    112K 
                Oem Cost Recoveries                                              
126: R14         Debt                                                HTML    203K  
75: R15         Fair Value Disclosures                              HTML    159K 
37: R16         Derivative Financial Instruments                    HTML     91K 
49: R17         Commitments and Contingencies                       HTML    161K 
123: R18         Taxes                                               HTML    215K  
77: R19         Employee Benefit Plans                              HTML    324K 
27: R20         Stockholders' Investment, Earnings Per Share and    HTML    164K 
                Accumulated Other Comprehensive Income                           
70: R21         Segment Information                                 HTML    252K 
122: R22         Quarterly Financial Information (Unaudited)         HTML    114K  
106: R23         Supplemental Condensed Consolidating Financial      HTML   1.01M  
                Information                                                      
26: R24         Operations, Basis of Presentation and Summary of    HTML    146K 
                Significant Accounting Policies (Policies)                       
69: R25         Revenue Recognition (Policies)                      HTML     53K 
121: R26         Variable Interest Entities and Other Investments    HTML     44K  
                in Significant Affiliates (Policies)                             
105: R27         Fair Value Disclosures (Policies)                   HTML     44K  
28: R28         Derivative Financial Instruments (Policies)         HTML     46K 
68: R29         Employee Benefit Plans (Policies)                   HTML     53K 
46: R30         Stockholders' Investment, Earnings Per Share and    HTML     43K 
                Accumulated Comprehensive Income (Policies)                      
34: R31         Operations, Basis of Presentation and Summary of    HTML    284K 
                Significant Accounting Policies (Tables)                         
81: R32         Revenue Recognition (Tables)                        HTML     92K 
128: R33         Variable Interest Entities and Other Investments    HTML    191K  
                in Significant Affiliates (Tables)                               
47: R34         Property and Equipment, Assets Held for Sale and    HTML    101K 
                Oem Cost Recoveries (Tables)                                     
35: R35         Debt (Tables)                                       HTML     93K 
82: R36         Fair Value Disclosures (Tables)                     HTML    158K 
129: R37         Derivative Financial Instruments (Tables)           HTML     89K  
48: R38         Commitments and Contingencies (Tables)              HTML    139K 
33: R39         Taxes (Tables)                                      HTML    208K 
65: R40         Employee Benefit Plans (Tables)                     HTML    315K 
24: R41         Stockholders' Investment, Earnings Per Share and    HTML    164K 
                Accumulated Comprehensive Income (Tables)                        
91: R42         Segment Information (Tables)                        HTML    256K 
107: R43         Quarterly Financial Information (Tables)            HTML    113K  
66: R44         Supplemental Condensed Consolidating Financial      HTML   1.02M 
                Information (Tables)                                             
25: R45         OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF    HTML    186K 
                SIGNIFICANT ACCOUNTING POLICIES Narrative                        
                (Details)                                                        
92: R46         OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF    HTML    142K 
                SIGNIFICANT ACCOUNTING POLICIES Immaterial                       
                Corrections to Prior Period Financial Information                
                (Details)                                                        
108: R47         OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF    HTML     48K  
                SIGNIFICANT ACCOUNTING POLICIES Accounts                         
                Receivable Table (Details)                                       
67: R48         OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF    HTML     55K 
                SIGNIFICANT ACCOUNTING POLICIES Inventory Table                  
                (Details)                                                        
23: R49         OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF    HTML     57K 
                SIGNIFICANT ACCOUNTING POLICIES Property and                     
                Equipment Narrative (Details)                                    
44: R50         OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF    HTML     55K 
                SIGNIFICANT ACCOUNTING POLICIES Goodwill Table                   
                (Details)                                                        
60: R51         OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF    HTML     94K 
                SIGNIFICANT ACCOUNTING POLICIES Other Intangible                 
                Assets Tables (Details)                                          
131: R52         OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF    HTML     59K  
                SIGNIFICANT ACCOUNTING POLICIES Loss on Impairment               
                Table (Details)                                                  
84: R53         OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF    HTML     56K 
                SIGNIFICANT ACCOUNTING POLICIES Other Accrued                    
                Liabilities Table (Details)                                      
43: R54         OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF    HTML     46K 
                SIGNIFICANT ACCOUNTING POLICIES Interest Expense,                
                Net Table (Details)                                              
59: R55         REVENUE RECOGNITION Narrative (Details)             HTML     64K 
130: R56         REVENUE RECOGNITION Revenue Recognition Adoption    HTML     84K  
                Impact Table (Details)                                           
83: R57         REVENUE RECOGNITION Remaining Performance           HTML     58K 
                Obligations Table (Details)                                      
45: R58         VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS    HTML    111K 
                IN SIGNIFICANT AFFILIATES VIE Narrative (Details)                
58: R59         VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS    HTML    164K 
                IN SIGNIFICANT AFFILIATES VIE Financials (Details)               
115: R60         VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS    HTML    157K  
                IN SIGNIFICANT AFFILIATES Other Significant                      
                Affiliates - Consolidated (Details)                              
96: R61         VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS    HTML     98K 
                IN SIGNIFICANT AFFILIATES Other Significant                      
                Affiliates - Unconsolidated (Details)                            
22: R62         VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS    HTML    116K 
                IN SIGNIFICANT AFFILIATES Other Significant                      
                Affiliates - Unconsoildated Tables (Details)                     
64: R63         PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND    HTML     55K 
                OEM COST RECOVERIES Capital Expenditures (Details)               
112: R64         PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND    HTML     79K  
                OEM COST RECOVERIES Sold or Disposed and                         
                Impairments (Details)                                            
93: R65         PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND    HTML     70K 
                OEM COST RECOVERIES Narrative (Details)                          
19: R66         PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND    HTML     66K 
                OEM COST RECOVERIES Assets Held for Sale (Details)               
61: R67         PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND    HTML     61K 
                OEM COST RECOVERIES OEM Cost Recoveries (Details)                
110: R68         DEBT Table (Details)                                HTML     72K  
98: R69         DEBT Narrative (Details)                            HTML    382K 
87: R70         DEBT Convertible debt Tables (Details)              HTML     67K 
132: R71         DEBT Annual Maturities (Details)                    HTML     60K  
54: R72         FAIR VALUE DISCLOSURES Recurring and Non-recurring  HTML    111K 
                Fair Value Measurements (Details)                                
39: R73         FAIR VALUE DISCLOSURES Fair Value of Debt           HTML     72K 
                (Details)                                                        
90: R74         DERIVATIVE FINANCIAL INSTRUMENTS Narrative          HTML     46K 
                (Details)                                                        
135: R75         DERIVATIVE FINANCIAL INSTRUMENTS Fair Value         HTML     60K  
                Derivative Instruments Table (Details)                           
57: R76         DERIVATIVE FINANCIAL INSTRUMENTS Derivative         HTML     46K 
                Instrument AOCI Table (Details)                                  
42: R77         COMMITMENTS AND CONTINGENCIES Aircraft Purchase     HTML    115K 
                Contracts (Details)                                              
85: R78         COMMITMENTS AND CONTINGENCIES Aircraft orders and   HTML     56K 
                options (Details)                                                
136: R79         COMMITMENTS AND CONTINGENCIES Operating Leases      HTML     93K  
                (Details)                                                        
88: R80         COMMITMENTS AND CONTINGENCIES Employee Agreements   HTML     48K 
                (Details)                                                        
133: R81         COMMITMENTS AND CONTINGENCIES Ligitgation,          HTML    101K  
                Environmental, Other Purchase Contracts and Other                
                (Details)                                                        
55: R82         TAXES Components of Deferred Tax Assets and         HTML    127K 
                Liabilities (Details)                                            
40: R83         TAXES Narrative (Details)                           HTML    138K 
89: R84         TAXES Rollforward of deferred tax valuation         HTML     46K 
                allowance (Details)                                              
134: R85         TAXES Component of Income Before Provision For      HTML     48K  
                Income Taxes (Details)                                           
56: R86         TAXES Provision for Income Taxes Table (Details)    HTML     61K 
41: R87         TAXES Reconciliation of U.S. Federal Statutory Tax  HTML     79K 
                Rate (Details)                                                   
86: R88         TAXES Tax Jurisdiction (Details)                    HTML     53K 
137: R89         TAXES Schedule of Unrecognized Tax Benefit          HTML     48K  
                (Details)                                                        
114: R90         EMPLOYEE BENEFIT PLANS Defined Contribution Plans   HTML     45K  
                (Details)                                                        
95: R91         EMPLOYEE BENEFIT PLANS Defined Benefit Plan         HTML     74K 
                Narrative (Details)                                              
21: R92         EMPLOYEE BENEFIT PLANS Rollforward of Change in     HTML     59K 
                Benefit Obligation (Details)                                     
63: R93         EMPLOYEE BENEFIT PLANS Rollforward of Change in     HTML     55K 
                Plan Assets (Details)                                            
113: R94         EMPLOYEE BENEFIT PLANS Reconciliation of Funded     HTML     53K  
                Status (Details)                                                 
94: R95         EMPLOYEE BENEFIT PLANS Components of Net Periodic   HTML     54K 
                Pension Cost (Details)                                           
20: R96         EMPLOYEE BENEFIT PLANS Actuarial Assumptions        HTML     49K 
                (Details)                                                        
62: R97         EMPLOYEE BENEFIT PLANS Plan Allocations (Details)   HTML     54K 
109: R98         EMPLOYEE BENEFIT PLANS Schedule of Fair Value of    HTML    109K  
                Plan Assets (Details)                                            
97: R99         EMPLOYEE BENEFIT PLANS Schedule of Estimated        HTML     52K 
                Future Benefit Payments (Details)                                
119: R100        EMPLOYEE BENEFIT PLANS Incentive and Stock Options  HTML    160K  
                Narrative (Details)                                              
101: R101        EMPLOYEE BENEFIT PLANS Stock Option Activity        HTML     80K  
                Rollforward (Details)                                            
31: R102        EMPLOYEE BENEFIT PLANS Stock Option Assumptions     HTML     54K 
                (Details)                                                        
73: R103        EMPLOYEE BENEFIT PLANS Rollforward of Non-Vested    HTML     64K 
                Restricted Stock (Details)                                       
118: R104        EMPLOYEE BENEFIT PLANS Schedule of Separation       HTML     54K  
                Agreements (Details)                                             
100: R105        STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND    HTML     70K  
                ACCUMULATED COMPREHENSIVE INCOME Narrative                       
                (Details)                                                        
30: R106        STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND    HTML    102K 
                ACCUMULATED COMPREHENSIVE INCOME Earnings per                    
                Share (Details)                                                  
72: R107        STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND    HTML     75K 
                ACCUMULATED COMPREHENSIVE INCOME Accumulated Other               
                Comprehensive Income (Details)                                   
116: R108        SEGMENT INFORMATION Narrative (Details)             HTML     44K  
103: R109        SEGMENT INFORMATION Revenue by Segment (Details)    HTML     95K  
78: R110        SEGMENT INFORMATION Operating Performance and       HTML    129K 
                Assets by Region (Details)                                       
124: R111        SEGMENT INFORMATION Revenue and Long Lived Assets   HTML     94K  
                by Country (Details)                                             
51: R112        Quarterly Financial Information (Details)           HTML    125K 
36: R113        SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL      HTML    175K 
                INFORMATION - Statement of Operations (Details)                  
80: R114        SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL      HTML     96K 
                INFORMATION - Statement of Comprehensive Income                  
                (Loss) (Details)                                                 
125: R115        SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL      HTML    217K  
                INFORMATION - Balance Sheets (Details)                           
52: R116        SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL      HTML    145K 
                INFORMATION - Statement of Cash Flows (Details)                  
79: XML         IDEA XML File -- Filing Summary                      XML    255K 
111: EXCEL       IDEA Workbook of Financial Reports                  XLSX    232K  
13: EX-101.INS  XBRL Instance -- brs-20190331                        XML  10.20M 
15: EX-101.CAL  XBRL Calculations -- brs-20190331_cal                XML    442K 
16: EX-101.DEF  XBRL Definitions -- brs-20190331_def                 XML   2.02M 
17: EX-101.LAB  XBRL Labels -- brs-20190331_lab                      XML   3.76M 
18: EX-101.PRE  XBRL Presentations -- brs-20190331_pre               XML   2.58M 
14: EX-101.SCH  XBRL Schema -- brs-20190331                          XSD    373K 
53: ZIP         XBRL Zipped Folder -- 0000073887-19-000046-xbrl      Zip    732K

‘XML’   —   IDEA XML File — Filing Summary

This Document is an IDEA XML File.

                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<FilingSummary>
<Version> 3.19.3 </Version>
<ProcessingTime/>
<ReportFormat> html </ReportFormat>
<ContextCount> 798 </ContextCount>
<ElementCount> 780 </ElementCount>
<EntityCount> 1 </EntityCount>
<FootnotesReported> false </FootnotesReported>
<SegmentCount> 232 </SegmentCount>
<ScenarioCount> 0 </ScenarioCount>
<TuplesReported> false </TuplesReported>
<UnitCount> 24 </UnitCount>
<MyReports>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R1.htm </HtmlFileName>
<LongName> 0001000 - Document - DOCUMENT AND ENTITY INFORMATION </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/DocumentAndEntityInformation </Role>
<ShortName> DOCUMENT AND ENTITY INFORMATION </ShortName>
<MenuCategory> Cover </MenuCategory>
<Position> 1 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R2.htm </HtmlFileName>
<LongName> 1001000 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/ConsolidatedStatementsOfOperations </Role>
<ShortName> CONSOLIDATED STATEMENTS OF OPERATIONS </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 2 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R3.htm </HtmlFileName>
<LongName> 1002000 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/ConsolidatedStatementsOfComprehensiveLoss </Role>
<ShortName> CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 3 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R4.htm </HtmlFileName>
<LongName> 1002501 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (PARENTHETICAL) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/ConsolidatedStatementsOfComprehensiveLossParenthetical </Role>
<ShortName> CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (PARENTHETICAL) </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 4 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R5.htm </HtmlFileName>
<LongName> 1003000 - Statement - CONSOLIDATED BALANCE SHEETS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/ConsolidatedBalanceSheets </Role>
<ShortName> CONSOLIDATED BALANCE SHEETS </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 5 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R6.htm </HtmlFileName>
<LongName> 1003501 - Statement - CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/ConsolidatedBalanceSheetsParenthetical </Role>
<ShortName> CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 6 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R7.htm </HtmlFileName>
<LongName> 1004000 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/ConsolidatedStatementsOfCashFlows </Role>
<ShortName> CONSOLIDATED STATEMENTS OF CASH FLOWS </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 7 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R8.htm </HtmlFileName>
<LongName> 1005000 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' INVESTMENT AND REDEEMABLE NONCONTROLLING INTERESTS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/ConsolidatedStatementsOfStockholdersInvestmentAndRedeemableNoncontrollingInterests </Role>
<ShortName> CONSOLIDATED STATEMENTS OF STOCKHOLDERS' INVESTMENT AND REDEEMABLE NONCONTROLLING INTERESTS </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 8 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R9.htm </HtmlFileName>
<LongName> 1005001 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' INVESTMENT AND REDEEMABLE NONCONTROLLING INTERESTS (PARENTHETICAL) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/ConsolidatedStatementsOfStockholdersInvestmentAndRedeemableNoncontrollingInterestsParenthetical </Role>
<ShortName> CONSOLIDATED STATEMENTS OF STOCKHOLDERS' INVESTMENT AND REDEEMABLE NONCONTROLLING INTERESTS (PARENTHETICAL) </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 9 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R10.htm </HtmlFileName>
<LongName> 2101100 - Disclosure - OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPolicies </Role>
<ShortName> OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 10 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R11.htm </HtmlFileName>
<LongName> 2103100 - Disclosure - REVENUE RECOGNITION </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/RevenueRecognition </Role>
<ShortName> REVENUE RECOGNITION </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 11 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R12.htm </HtmlFileName>
<LongName> 2104100 - Disclosure - VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/VariableInterestEntitiesAndOtherInvestmentsInSignificantAffiliates </Role>
<ShortName> VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 12 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R13.htm </HtmlFileName>
<LongName> 2105100 - Disclosure - PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND OEM COST RECOVERIES </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/PropertyAndEquipmentAssetsHeldForSaleAndOemCostRecoveries </Role>
<ShortName> PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND OEM COST RECOVERIES </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 13 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R14.htm </HtmlFileName>
<LongName> 2106100 - Disclosure - DEBT </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/Debt </Role>
<ShortName> DEBT </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 14 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R15.htm </HtmlFileName>
<LongName> 2107100 - Disclosure - FAIR VALUE DISCLOSURES </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/FairValueDisclosures </Role>
<ShortName> FAIR VALUE DISCLOSURES </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 15 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R16.htm </HtmlFileName>
<LongName> 2108100 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/DerivativeFinancialInstruments </Role>
<ShortName> DERIVATIVE FINANCIAL INSTRUMENTS </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 16 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R17.htm </HtmlFileName>
<LongName> 2109100 - Disclosure - COMMITMENTS AND CONTINGENCIES </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/CommitmentsAndContingencies </Role>
<ShortName> COMMITMENTS AND CONTINGENCIES </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 17 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R18.htm </HtmlFileName>
<LongName> 2110100 - Disclosure - TAXES </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/Taxes </Role>
<ShortName> TAXES </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 18 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R19.htm </HtmlFileName>
<LongName> 2111100 - Disclosure - EMPLOYEE BENEFIT PLANS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlans </Role>
<ShortName> EMPLOYEE BENEFIT PLANS </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 19 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R20.htm </HtmlFileName>
<LongName> 2112100 - Disclosure - STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED OTHER COMPREHENSIVE INCOME </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/StockholdersInvestmentEarningsPerShareAndAccumulatedOtherComprehensiveIncome </Role>
<ShortName> STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED OTHER COMPREHENSIVE INCOME </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 20 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R21.htm </HtmlFileName>
<LongName> 2113100 - Disclosure - SEGMENT INFORMATION </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/SegmentInformation </Role>
<ShortName> SEGMENT INFORMATION </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 21 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R22.htm </HtmlFileName>
<LongName> 2114100 - Disclosure - QUARTERLY FINANCIAL INFORMATION (Unaudited) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/QuarterlyFinancialInformationUnaudited </Role>
<ShortName> QUARTERLY FINANCIAL INFORMATION (Unaudited) </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 22 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R23.htm </HtmlFileName>
<LongName> 2115100 - Disclosure - SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/SupplementalCondensedConsolidatingFinancialInformation </Role>
<ShortName> SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 23 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R24.htm </HtmlFileName>
<LongName> 2201201 - Disclosure - OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies </Role>
<ShortName> OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) </ShortName>
<MenuCategory> Policies </MenuCategory>
<Position> 24 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R25.htm </HtmlFileName>
<LongName> 2203201 - Disclosure - REVENUE RECOGNITION (Policies) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/RevenueRecognitionPolicies </Role>
<ShortName> REVENUE RECOGNITION (Policies) </ShortName>
<MenuCategory> Policies </MenuCategory>
<Position> 25 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R26.htm </HtmlFileName>
<LongName> 2204201 - Disclosure - VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES (Policies) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/VariableInterestEntitiesAndOtherInvestmentsInSignificantAffiliatesPolicies </Role>
<ShortName> VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES (Policies) </ShortName>
<MenuCategory> Policies </MenuCategory>
<Position> 26 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R27.htm </HtmlFileName>
<LongName> 2207201 - Disclosure - FAIR VALUE DISCLOSURES (Policies) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/FairValueDisclosuresPolicies </Role>
<ShortName> FAIR VALUE DISCLOSURES (Policies) </ShortName>
<MenuCategory> Policies </MenuCategory>
<Position> 27 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R28.htm </HtmlFileName>
<LongName> 2208201 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS (Policies) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/DerivativeFinancialInstrumentsPolicies </Role>
<ShortName> DERIVATIVE FINANCIAL INSTRUMENTS (Policies) </ShortName>
<MenuCategory> Policies </MenuCategory>
<Position> 28 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R29.htm </HtmlFileName>
<LongName> 2211201 - Disclosure - EMPLOYEE BENEFIT PLANS (Policies) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansPolicies </Role>
<ShortName> EMPLOYEE BENEFIT PLANS (Policies) </ShortName>
<MenuCategory> Policies </MenuCategory>
<Position> 29 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R30.htm </HtmlFileName>
<LongName> 2212201 - Disclosure - STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED COMPREHENSIVE INCOME (Policies) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/StockholdersInvestmentEarningsPerShareAndAccumulatedComprehensiveIncomePolicies </Role>
<ShortName> STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED COMPREHENSIVE INCOME (Policies) </ShortName>
<MenuCategory> Policies </MenuCategory>
<Position> 30 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R31.htm </HtmlFileName>
<LongName> 2301302 - Disclosure - OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTables </Role>
<ShortName> OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPolicies </ParentRole>
<Position> 31 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R32.htm </HtmlFileName>
<LongName> 2303302 - Disclosure - REVENUE RECOGNITION (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/RevenueRecognitionTables </Role>
<ShortName> REVENUE RECOGNITION (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/RevenueRecognition </ParentRole>
<Position> 32 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R33.htm </HtmlFileName>
<LongName> 2304302 - Disclosure - VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/VariableInterestEntitiesAndOtherInvestmentsInSignificantAffiliatesTables </Role>
<ShortName> VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/VariableInterestEntitiesAndOtherInvestmentsInSignificantAffiliates </ParentRole>
<Position> 33 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R34.htm </HtmlFileName>
<LongName> 2305301 - Disclosure - PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND OEM COST RECOVERIES (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/PropertyAndEquipmentAssetsHeldForSaleAndOemCostRecoveriesTables </Role>
<ShortName> PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND OEM COST RECOVERIES (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/PropertyAndEquipmentAssetsHeldForSaleAndOemCostRecoveries </ParentRole>
<Position> 34 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R35.htm </HtmlFileName>
<LongName> 2306301 - Disclosure - DEBT (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/DebtTables </Role>
<ShortName> DEBT (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/Debt </ParentRole>
<Position> 35 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R36.htm </HtmlFileName>
<LongName> 2307302 - Disclosure - FAIR VALUE DISCLOSURES (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/FairValueDisclosuresTables </Role>
<ShortName> FAIR VALUE DISCLOSURES (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/FairValueDisclosures </ParentRole>
<Position> 36 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R37.htm </HtmlFileName>
<LongName> 2308302 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/DerivativeFinancialInstrumentsTables </Role>
<ShortName> DERIVATIVE FINANCIAL INSTRUMENTS (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/DerivativeFinancialInstruments </ParentRole>
<Position> 37 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R38.htm </HtmlFileName>
<LongName> 2309301 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/CommitmentsAndContingenciesTables </Role>
<ShortName> COMMITMENTS AND CONTINGENCIES (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/CommitmentsAndContingencies </ParentRole>
<Position> 38 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R39.htm </HtmlFileName>
<LongName> 2310301 - Disclosure - TAXES (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/TaxesTables </Role>
<ShortName> TAXES (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/Taxes </ParentRole>
<Position> 39 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R40.htm </HtmlFileName>
<LongName> 2311302 - Disclosure - EMPLOYEE BENEFIT PLANS (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansTables </Role>
<ShortName> EMPLOYEE BENEFIT PLANS (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/EmployeeBenefitPlans </ParentRole>
<Position> 40 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R41.htm </HtmlFileName>
<LongName> 2312302 - Disclosure - STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED COMPREHENSIVE INCOME (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/StockholdersInvestmentEarningsPerShareAndAccumulatedComprehensiveIncomeTables </Role>
<ShortName> STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED COMPREHENSIVE INCOME (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<Position> 41 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R42.htm </HtmlFileName>
<LongName> 2313301 - Disclosure - SEGMENT INFORMATION (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/SegmentInformationTables </Role>
<ShortName> SEGMENT INFORMATION (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/SegmentInformation </ParentRole>
<Position> 42 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R43.htm </HtmlFileName>
<LongName> 2314301 - Disclosure - QUARTERLY FINANCIAL INFORMATION (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/QuarterlyFinancialInformationTables </Role>
<ShortName> QUARTERLY FINANCIAL INFORMATION (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/QuarterlyFinancialInformationUnaudited </ParentRole>
<Position> 43 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R44.htm </HtmlFileName>
<LongName> 2315301 - Disclosure - SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/SupplementalCondensedConsolidatingFinancialInformationTables </Role>
<ShortName> SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/SupplementalCondensedConsolidatingFinancialInformation </ParentRole>
<Position> 44 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R45.htm </HtmlFileName>
<LongName> 2401403 - Disclosure - OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Narrative (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails </Role>
<ShortName> OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Narrative (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTables </ParentRole>
<Position> 45 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R46.htm </HtmlFileName>
<LongName> 2401404 - Disclosure - OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Immaterial Corrections to Prior Period Financial Information (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesImmaterialCorrectionsToPriorPeriodFinancialInformationDetails </Role>
<ShortName> OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Immaterial Corrections to Prior Period Financial Information (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 46 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R47.htm </HtmlFileName>
<LongName> 2401405 - Disclosure - OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Accounts Receivable Table (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesAccountsReceivableTableDetails </Role>
<ShortName> OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Accounts Receivable Table (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 47 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R48.htm </HtmlFileName>
<LongName> 2401406 - Disclosure - OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Inventory Table (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesInventoryTableDetails </Role>
<ShortName> OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Inventory Table (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTables </ParentRole>
<Position> 48 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R49.htm </HtmlFileName>
<LongName> 2401407 - Disclosure - OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Property and Equipment Narrative (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPropertyAndEquipmentNarrativeDetails </Role>
<ShortName> OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Property and Equipment Narrative (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 49 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R50.htm </HtmlFileName>
<LongName> 2401408 - Disclosure - OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Goodwill Table (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesGoodwillTableDetails </Role>
<ShortName> OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Goodwill Table (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTables </ParentRole>
<Position> 50 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R51.htm </HtmlFileName>
<LongName> 2401409 - Disclosure - OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Other Intangible Assets Tables (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesOtherIntangibleAssetsTablesDetails </Role>
<ShortName> OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Other Intangible Assets Tables (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 51 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R52.htm </HtmlFileName>
<LongName> 2401410 - Disclosure - OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Loss on Impairment Table (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLossOnImpairmentTableDetails </Role>
<ShortName> OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Loss on Impairment Table (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 52 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R53.htm </HtmlFileName>
<LongName> 2401411 - Disclosure - OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Other Accrued Liabilities Table (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesOtherAccruedLiabilitiesTableDetails </Role>
<ShortName> OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Other Accrued Liabilities Table (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 53 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R54.htm </HtmlFileName>
<LongName> 2401412 - Disclosure - OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Interest Expense, Net Table (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/OperationsBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesInterestExpenseNetTableDetails </Role>
<ShortName> OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Interest Expense, Net Table (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 54 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R55.htm </HtmlFileName>
<LongName> 2403403 - Disclosure - REVENUE RECOGNITION Narrative (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/RevenueRecognitionNarrativeDetails </Role>
<ShortName> REVENUE RECOGNITION Narrative (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 55 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R56.htm </HtmlFileName>
<LongName> 2403404 - Disclosure - REVENUE RECOGNITION Revenue Recognition Adoption Impact Table (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/RevenueRecognitionRevenueRecognitionAdoptionImpactTableDetails </Role>
<ShortName> REVENUE RECOGNITION Revenue Recognition Adoption Impact Table (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 56 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R57.htm </HtmlFileName>
<LongName> 2403405 - Disclosure - REVENUE RECOGNITION Remaining Performance Obligations Table (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/RevenueRecognitionRemainingPerformanceObligationsTableDetails </Role>
<ShortName> REVENUE RECOGNITION Remaining Performance Obligations Table (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 57 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R58.htm </HtmlFileName>
<LongName> 2404403 - Disclosure - VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES VIE Narrative (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/VariableInterestEntitiesAndOtherInvestmentsInSignificantAffiliatesVieNarrativeDetails </Role>
<ShortName> VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES VIE Narrative (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/VariableInterestEntitiesAndOtherInvestmentsInSignificantAffiliatesTables </ParentRole>
<Position> 58 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R59.htm </HtmlFileName>
<LongName> 2404404 - Disclosure - VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES VIE Financials (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/VariableInterestEntitiesAndOtherInvestmentsInSignificantAffiliatesVieFinancialsDetails </Role>
<ShortName> VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES VIE Financials (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/VariableInterestEntitiesAndOtherInvestmentsInSignificantAffiliatesTables </ParentRole>
<Position> 59 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R60.htm </HtmlFileName>
<LongName> 2404405 - Disclosure - VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES Other Significant Affiliates ??? Consolidated (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/VariableInterestEntitiesAndOtherInvestmentsInSignificantAffiliatesOtherSignificantAffiliatesConsolidatedDetails </Role>
<ShortName> VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES Other Significant Affiliates ??? Consolidated (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 60 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R61.htm </HtmlFileName>
<LongName> 2404406 - Disclosure - VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES Other Significant Affiliates - Unconsolidated (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/VariableInterestEntitiesAndOtherInvestmentsInSignificantAffiliatesOtherSignificantAffiliatesUnconsolidatedDetails </Role>
<ShortName> VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES Other Significant Affiliates - Unconsolidated (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 61 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R62.htm </HtmlFileName>
<LongName> 2404407 - Disclosure - VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES Other Significant Affiliates - Unconsoildated Tables (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/VariableInterestEntitiesAndOtherInvestmentsInSignificantAffiliatesOtherSignificantAffiliatesUnconsoildatedTablesDetails </Role>
<ShortName> VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES Other Significant Affiliates - Unconsoildated Tables (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 62 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R63.htm </HtmlFileName>
<LongName> 2405402 - Disclosure - PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND OEM COST RECOVERIES Capital Expenditures (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/PropertyAndEquipmentAssetsHeldForSaleAndOemCostRecoveriesCapitalExpendituresDetails </Role>
<ShortName> PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND OEM COST RECOVERIES Capital Expenditures (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 63 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R64.htm </HtmlFileName>
<LongName> 2405403 - Disclosure - PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND OEM COST RECOVERIES Sold or Disposed and Impairments (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/PropertyAndEquipmentAssetsHeldForSaleAndOemCostRecoveriesSoldOrDisposedAndImpairmentsDetails </Role>
<ShortName> PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND OEM COST RECOVERIES Sold or Disposed and Impairments (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 64 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R65.htm </HtmlFileName>
<LongName> 2405404 - Disclosure - PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND OEM COST RECOVERIES Narrative (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/PropertyAndEquipmentAssetsHeldForSaleAndOemCostRecoveriesNarrativeDetails </Role>
<ShortName> PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND OEM COST RECOVERIES Narrative (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/PropertyAndEquipmentAssetsHeldForSaleAndOemCostRecoveriesTables </ParentRole>
<Position> 65 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R66.htm </HtmlFileName>
<LongName> 2405405 - Disclosure - PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND OEM COST RECOVERIES Assets Held for Sale (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/PropertyAndEquipmentAssetsHeldForSaleAndOemCostRecoveriesAssetsHeldForSaleDetails </Role>
<ShortName> PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND OEM COST RECOVERIES Assets Held for Sale (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 66 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R67.htm </HtmlFileName>
<LongName> 2405406 - Disclosure - PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND OEM COST RECOVERIES OEM Cost Recoveries (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/PropertyAndEquipmentAssetsHeldForSaleAndOemCostRecoveriesOemCostRecoveriesDetails </Role>
<ShortName> PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND OEM COST RECOVERIES OEM Cost Recoveries (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 67 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R68.htm </HtmlFileName>
<LongName> 2406402 - Disclosure - DEBT Table (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/DebtTableDetails </Role>
<ShortName> DEBT Table (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 68 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R69.htm </HtmlFileName>
<LongName> 2406403 - Disclosure - DEBT Narrative (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/DebtNarrativeDetails </Role>
<ShortName> DEBT Narrative (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 69 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R70.htm </HtmlFileName>
<LongName> 2406404 - Disclosure - DEBT Convertible debt Tables (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/DebtConvertibleDebtTablesDetails </Role>
<ShortName> DEBT Convertible debt Tables (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 70 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R71.htm </HtmlFileName>
<LongName> 2406405 - Disclosure - DEBT Annual Maturities (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/DebtAnnualMaturitiesDetails </Role>
<ShortName> DEBT Annual Maturities (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 71 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R72.htm </HtmlFileName>
<LongName> 2407403 - Disclosure - FAIR VALUE DISCLOSURES Recurring and Non-recurring Fair Value Measurements (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/FairValueDisclosuresRecurringAndNonRecurringFairValueMeasurementsDetails </Role>
<ShortName> FAIR VALUE DISCLOSURES Recurring and Non-recurring Fair Value Measurements (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 72 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R73.htm </HtmlFileName>
<LongName> 2407404 - Disclosure - FAIR VALUE DISCLOSURES Fair Value of Debt (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/FairValueDisclosuresFairValueOfDebtDetails </Role>
<ShortName> FAIR VALUE DISCLOSURES Fair Value of Debt (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 73 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R74.htm </HtmlFileName>
<LongName> 2408403 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS Narrative (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/DerivativeFinancialInstrumentsNarrativeDetails </Role>
<ShortName> DERIVATIVE FINANCIAL INSTRUMENTS Narrative (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 74 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R75.htm </HtmlFileName>
<LongName> 2408404 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS Fair Value Derivative Instruments Table (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/DerivativeFinancialInstrumentsFairValueDerivativeInstrumentsTableDetails </Role>
<ShortName> DERIVATIVE FINANCIAL INSTRUMENTS Fair Value Derivative Instruments Table (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 75 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R76.htm </HtmlFileName>
<LongName> 2408405 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS Derivative Instrument AOCI Table (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/DerivativeFinancialInstrumentsDerivativeInstrumentAociTableDetails </Role>
<ShortName> DERIVATIVE FINANCIAL INSTRUMENTS Derivative Instrument AOCI Table (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 76 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R77.htm </HtmlFileName>
<LongName> 2409402 - Disclosure - COMMITMENTS AND CONTINGENCIES Aircraft Purchase Contracts (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/CommitmentsAndContingenciesAircraftPurchaseContractsDetails </Role>
<ShortName> COMMITMENTS AND CONTINGENCIES Aircraft Purchase Contracts (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 77 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R78.htm </HtmlFileName>
<LongName> 2409403 - Disclosure - COMMITMENTS AND CONTINGENCIES Aircraft orders and options (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/CommitmentsAndContingenciesAircraftOrdersAndOptionsDetails </Role>
<ShortName> COMMITMENTS AND CONTINGENCIES Aircraft orders and options (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 78 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R79.htm </HtmlFileName>
<LongName> 2409404 - Disclosure - COMMITMENTS AND CONTINGENCIES Operating Leases (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/CommitmentsAndContingenciesOperatingLeasesDetails </Role>
<ShortName> COMMITMENTS AND CONTINGENCIES Operating Leases (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 79 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R80.htm </HtmlFileName>
<LongName> 2409405 - Disclosure - COMMITMENTS AND CONTINGENCIES Employee Agreements (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/CommitmentsAndContingenciesEmployeeAgreementsDetails </Role>
<ShortName> COMMITMENTS AND CONTINGENCIES Employee Agreements (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 80 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R81.htm </HtmlFileName>
<LongName> 2409406 - Disclosure - COMMITMENTS AND CONTINGENCIES Ligitgation, Environmental, Other Purchase Contracts and Other (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/CommitmentsAndContingenciesLigitgationEnvironmentalOtherPurchaseContractsAndOtherDetails </Role>
<ShortName> COMMITMENTS AND CONTINGENCIES Ligitgation, Environmental, Other Purchase Contracts and Other (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 81 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R82.htm </HtmlFileName>
<LongName> 2410402 - Disclosure - TAXES Components of Deferred Tax Assets and Liabilities (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/TaxesComponentsOfDeferredTaxAssetsAndLiabilitiesDetails </Role>
<ShortName> TAXES Components of Deferred Tax Assets and Liabilities (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 82 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R83.htm </HtmlFileName>
<LongName> 2410403 - Disclosure - TAXES Narrative (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/TaxesNarrativeDetails </Role>
<ShortName> TAXES Narrative (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 83 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R84.htm </HtmlFileName>
<LongName> 2410404 - Disclosure - TAXES Rollforward of deferred tax valuation allowance (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/TaxesRollforwardOfDeferredTaxValuationAllowanceDetails </Role>
<ShortName> TAXES Rollforward of deferred tax valuation allowance (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 84 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R85.htm </HtmlFileName>
<LongName> 2410405 - Disclosure - TAXES Component of Income Before Provision For Income Taxes (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/TaxesComponentOfIncomeBeforeProvisionForIncomeTaxesDetails </Role>
<ShortName> TAXES Component of Income Before Provision For Income Taxes (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 85 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R86.htm </HtmlFileName>
<LongName> 2410406 - Disclosure - TAXES Provision for Income Taxes Table (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/TaxesProvisionForIncomeTaxesTableDetails </Role>
<ShortName> TAXES Provision for Income Taxes Table (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 86 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R87.htm </HtmlFileName>
<LongName> 2410407 - Disclosure - TAXES Reconciliation of U.S. Federal Statutory Tax Rate (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/TaxesReconciliationOfUSFederalStatutoryTaxRateDetails </Role>
<ShortName> TAXES Reconciliation of U.S. Federal Statutory Tax Rate (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 87 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R88.htm </HtmlFileName>
<LongName> 2410408 - Disclosure - TAXES Tax Jurisdiction (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/TaxesTaxJurisdictionDetails </Role>
<ShortName> TAXES Tax Jurisdiction (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 88 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R89.htm </HtmlFileName>
<LongName> 2410409 - Disclosure - TAXES Schedule of Unrecognized Tax Benefit (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/TaxesScheduleOfUnrecognizedTaxBenefitDetails </Role>
<ShortName> TAXES Schedule of Unrecognized Tax Benefit (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 89 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R90.htm </HtmlFileName>
<LongName> 2411403 - Disclosure - EMPLOYEE BENEFIT PLANS Defined Contribution Plans (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansDefinedContributionPlansDetails </Role>
<ShortName> EMPLOYEE BENEFIT PLANS Defined Contribution Plans (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 90 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R91.htm </HtmlFileName>
<LongName> 2411404 - Disclosure - EMPLOYEE BENEFIT PLANS Defined Benefit Plan Narrative (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansDefinedBenefitPlanNarrativeDetails </Role>
<ShortName> EMPLOYEE BENEFIT PLANS Defined Benefit Plan Narrative (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 91 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R92.htm </HtmlFileName>
<LongName> 2411405 - Disclosure - EMPLOYEE BENEFIT PLANS Rollforward of Change in Benefit Obligation (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansRollforwardOfChangeInBenefitObligationDetails </Role>
<ShortName> EMPLOYEE BENEFIT PLANS Rollforward of Change in Benefit Obligation (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 92 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R93.htm </HtmlFileName>
<LongName> 2411406 - Disclosure - EMPLOYEE BENEFIT PLANS Rollforward of Change in Plan Assets (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansRollforwardOfChangeInPlanAssetsDetails </Role>
<ShortName> EMPLOYEE BENEFIT PLANS Rollforward of Change in Plan Assets (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 93 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R94.htm </HtmlFileName>
<LongName> 2411407 - Disclosure - EMPLOYEE BENEFIT PLANS Reconciliation of Funded Status (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansReconciliationOfFundedStatusDetails </Role>
<ShortName> EMPLOYEE BENEFIT PLANS Reconciliation of Funded Status (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 94 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R95.htm </HtmlFileName>
<LongName> 2411408 - Disclosure - EMPLOYEE BENEFIT PLANS Components of Net Periodic Pension Cost (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansComponentsOfNetPeriodicPensionCostDetails </Role>
<ShortName> EMPLOYEE BENEFIT PLANS Components of Net Periodic Pension Cost (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 95 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R96.htm </HtmlFileName>
<LongName> 2411409 - Disclosure - EMPLOYEE BENEFIT PLANS Actuarial Assumptions (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansActuarialAssumptionsDetails </Role>
<ShortName> EMPLOYEE BENEFIT PLANS Actuarial Assumptions (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 96 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R97.htm </HtmlFileName>
<LongName> 2411410 - Disclosure - EMPLOYEE BENEFIT PLANS Plan Allocations (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansPlanAllocationsDetails </Role>
<ShortName> EMPLOYEE BENEFIT PLANS Plan Allocations (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 97 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R98.htm </HtmlFileName>
<LongName> 2411411 - Disclosure - EMPLOYEE BENEFIT PLANS Schedule of Fair Value of Plan Assets (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansScheduleOfFairValueOfPlanAssetsDetails </Role>
<ShortName> EMPLOYEE BENEFIT PLANS Schedule of Fair Value of Plan Assets (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 98 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R99.htm </HtmlFileName>
<LongName> 2411412 - Disclosure - EMPLOYEE BENEFIT PLANS Schedule of Estimated Future Benefit Payments (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansScheduleOfEstimatedFutureBenefitPaymentsDetails </Role>
<ShortName> EMPLOYEE BENEFIT PLANS Schedule of Estimated Future Benefit Payments (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 99 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R100.htm </HtmlFileName>
<LongName> 2411413 - Disclosure - EMPLOYEE BENEFIT PLANS Incentive and Stock Options Narrative (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansIncentiveAndStockOptionsNarrativeDetails </Role>
<ShortName> EMPLOYEE BENEFIT PLANS Incentive and Stock Options Narrative (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 100 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R101.htm </HtmlFileName>
<LongName> 2411414 - Disclosure - EMPLOYEE BENEFIT PLANS Stock Option Activity Rollforward (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansStockOptionActivityRollforwardDetails </Role>
<ShortName> EMPLOYEE BENEFIT PLANS Stock Option Activity Rollforward (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 101 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R102.htm </HtmlFileName>
<LongName> 2411415 - Disclosure - EMPLOYEE BENEFIT PLANS Stock Option Assumptions (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansStockOptionAssumptionsDetails </Role>
<ShortName> EMPLOYEE BENEFIT PLANS Stock Option Assumptions (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 102 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R103.htm </HtmlFileName>
<LongName> 2411416 - Disclosure - EMPLOYEE BENEFIT PLANS Rollforward of Non-Vested Restricted Stock (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansRollforwardOfNonVestedRestrictedStockDetails </Role>
<ShortName> EMPLOYEE BENEFIT PLANS Rollforward of Non-Vested Restricted Stock (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 103 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R104.htm </HtmlFileName>
<LongName> 2411417 - Disclosure - EMPLOYEE BENEFIT PLANS Schedule of Separation Agreements (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/EmployeeBenefitPlansScheduleOfSeparationAgreementsDetails </Role>
<ShortName> EMPLOYEE BENEFIT PLANS Schedule of Separation Agreements (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 104 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R105.htm </HtmlFileName>
<LongName> 2412403 - Disclosure - STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED COMPREHENSIVE INCOME Narrative (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/StockholdersInvestmentEarningsPerShareAndAccumulatedComprehensiveIncomeNarrativeDetails </Role>
<ShortName> STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED COMPREHENSIVE INCOME Narrative (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/StockholdersInvestmentEarningsPerShareAndAccumulatedComprehensiveIncomeTables </ParentRole>
<Position> 105 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R106.htm </HtmlFileName>
<LongName> 2412404 - Disclosure - STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED COMPREHENSIVE INCOME Earnings per Share (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/StockholdersInvestmentEarningsPerShareAndAccumulatedComprehensiveIncomeEarningsPerShareDetails </Role>
<ShortName> STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED COMPREHENSIVE INCOME Earnings per Share (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/StockholdersInvestmentEarningsPerShareAndAccumulatedComprehensiveIncomeTables </ParentRole>
<Position> 106 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R107.htm </HtmlFileName>
<LongName> 2412405 - Disclosure - STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED COMPREHENSIVE INCOME Accumulated Other Comprehensive Income (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/StockholdersInvestmentEarningsPerShareAndAccumulatedComprehensiveIncomeAccumulatedOtherComprehensiveIncomeDetails </Role>
<ShortName> STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED COMPREHENSIVE INCOME Accumulated Other Comprehensive Income (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 107 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R108.htm </HtmlFileName>
<LongName> 2413402 - Disclosure - SEGMENT INFORMATION Narrative (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/SegmentInformationNarrativeDetails </Role>
<ShortName> SEGMENT INFORMATION Narrative (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 108 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R109.htm </HtmlFileName>
<LongName> 2413403 - Disclosure - SEGMENT INFORMATION Revenue by Segment (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/SegmentInformationRevenueBySegmentDetails </Role>
<ShortName> SEGMENT INFORMATION Revenue by Segment (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 109 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R110.htm </HtmlFileName>
<LongName> 2413404 - Disclosure - SEGMENT INFORMATION Operating Performance and Assets by Region (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/SegmentInformationOperatingPerformanceAndAssetsByRegionDetails </Role>
<ShortName> SEGMENT INFORMATION Operating Performance and Assets by Region (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 110 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R111.htm </HtmlFileName>
<LongName> 2413405 - Disclosure - SEGMENT INFORMATION Revenue and Long Lived Assets by Country (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/SegmentInformationRevenueAndLongLivedAssetsByCountryDetails </Role>
<ShortName> SEGMENT INFORMATION Revenue and Long Lived Assets by Country (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 111 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R112.htm </HtmlFileName>
<LongName> 2414402 - Disclosure - QUARTERLY FINANCIAL INFORMATION (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/QuarterlyFinancialInformationDetails </Role>
<ShortName> QUARTERLY FINANCIAL INFORMATION (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.bristowgroup.com/role/QuarterlyFinancialInformationTables </ParentRole>
<Position> 112 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R113.htm </HtmlFileName>
<LongName> 2415402 - Disclosure - SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION - Statement of Operations (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/SupplementalCondensedConsolidatingFinancialInformationStatementOfOperationsDetails </Role>
<ShortName> SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION - Statement of Operations (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 113 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R114.htm </HtmlFileName>
<LongName> 2415403 - Disclosure - SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION - Statement of Comprehensive Income (Loss) (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/SupplementalCondensedConsolidatingFinancialInformationStatementOfComprehensiveIncomeLossDetails </Role>
<ShortName> SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION - Statement of Comprehensive Income (Loss) (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 114 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R115.htm </HtmlFileName>
<LongName> 2415404 - Disclosure - SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION - Balance Sheets (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/SupplementalCondensedConsolidatingFinancialInformationBalanceSheetsDetails </Role>
<ShortName> SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION - Balance Sheets (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 115 </Position>
</Report>
<Report instance="brs-20190331.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R116.htm </HtmlFileName>
<LongName> 2415405 - Disclosure - SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION - Statement of Cash Flows (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.bristowgroup.com/role/SupplementalCondensedConsolidatingFinancialInformationStatementOfCashFlowsDetails </Role>
<ShortName> SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION - Statement of Cash Flows (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 116 </Position>
</Report>
<Report>
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<LongName> All Reports </LongName>
<ReportType> Book </ReportType>
<ShortName> All Reports </ShortName>
</Report>
</MyReports>
<InputFiles>
<File> brs-20190331.xml </File>
<File> brs-20190331.xsd </File>
<File> brs-20190331_cal.xml </File>
<File> brs-20190331_def.xml </File>
<File> brs-20190331_lab.xml </File>
<File> brs-20190331_pre.xml </File>
</InputFiles>
<SupplementalFiles/>
<BaseTaxonomies>
<BaseTaxonomy> http://xbrl.sec.gov/country/2017-01-31 </BaseTaxonomy>
<BaseTaxonomy> http://fasb.org/us-gaap/2018-01-31 </BaseTaxonomy>
<BaseTaxonomy> http://xbrl.sec.gov/dei/2018-01-31 </BaseTaxonomy>
<BaseTaxonomy> http://fasb.org/srt/2018-01-31 </BaseTaxonomy>
</BaseTaxonomies>
<HasPresentationLinkbase> true </HasPresentationLinkbase>
<HasCalculationLinkbase> true </HasCalculationLinkbase>
</FilingSummary>

↑Top
Filing Submission 0000073887-19-000046   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)
Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
About — Privacy — Redactions — Help — Tue., Apr. 30, 3:55:18.1pm ET