v2.4.1.9

VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES (Details) | 3 Months Ended | 12 Months Ended |  | 12 Months Ended | 0 Months Ended | 3 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended |  |  |  |  | 12 Months Ended | 1 Months Ended | 12 Months Ended |  |  | 12 Months Ended | 1 Months Ended | 3 Months Ended | 8 Months Ended | 12 Months Ended |  | 12 Months Ended | 1 Months Ended | 12 Months Ended
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Mar. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Sep. 30, 2014 USD ($) | Jun. 30, 2014 USD ($) | Mar. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Sep. 30, 2013 USD ($) | Jun. 30, 2013 USD ($) | Mar. 31, 2015 USD ($) Affiliates aircraft | Mar. 31, 2014 USD ($) | Mar. 31, 2013 USD ($) | Mar. 31, 2012 USD ($) | Mar. 31, 2015 Caledonia Investments Plc [Member] | Mar. 31, 2015 European Union [Member] | Mar. 31, 2015 Unrelated Local Nigerian Partners [Member] | Jul. 31, 2014 Nigerian Company owned by 100% Nigerian Employees [Member] | Dec. 31, 2013 Nigerian Company owned by 100% Nigerian Employees [Member] | Mar. 31, 2015 Nigerian Company owned by 100% Nigerian Employees [Member] | Apr. 30, 2015 Nigerian Company owned by 100% Nigerian Employees [Member] Subsequent Event [Member] | Mar. 31, 2015 Employee Trust Fund [Member] | Mar. 31, 2015 Bristow Aviation Holdings Limited [Member] USD ($) Class_Of_Shares | Mar. 31, 2014 Bristow Aviation Holdings Limited [Member] USD ($) | Mar. 31, 2013 Bristow Aviation Holdings Limited [Member] USD ($) | Mar. 31, 2015 Bristow Aviation Holdings Limited [Member] GBP (£) | May 31, 2004 Bristow Aviation Holdings Limited [Member] USD ($) | May 31, 2004 Bristow Aviation Holdings Limited [Member] GBP (£) | Apr. 30, 2004 Bristow Aviation Holdings Limited [Member] | Mar. 31, 2015 Bristow Aviation Holdings Limited [Member] Director One [Member] voting_rights | Mar. 31, 2015 Bristow Aviation Holdings Limited [Member] Director Two [Member] voting_rights | Mar. 31, 2015 Bristow Aviation Holdings Limited [Member] Caledonia Investments Plc [Member] Nominations voting_rights | Mar. 31, 2015 Bristow Helicopters Nigeria Ltd [Member] | Apr. 30, 2015 Bristow Helicopters Nigeria Ltd [Member] Subsequent Event [Member] | Mar. 31, 2015 Pan African Airlines Nigeria Ltd [Member] | Mar. 31, 2015 Aviashelf Aviation Co. [Member] | Mar. 31, 2015 Bristow Helicopter Leasing [Member] | Mar. 31, 2015 Sakhalin Bristow Air Services [Member] | Mar. 31, 2015 Petroleum Air Services [Member] USD ($) aircraft | Mar. 31, 2014 Petroleum Air Services [Member] USD ($) | Mar. 31, 2015 FB Entities [Member] USD ($) | Mar. 31, 2014 FB Entities [Member] USD ($) | Mar. 31, 2014 FB Entities [Member] GBP (£) | Mar. 31, 2013 FB Entities [Member] USD ($) Extensions | Mar. 31, 2015 Lider [Member] USD ($) aircraft | Mar. 31, 2014 Lider [Member] USD ($) | Mar. 31, 2013 Lider [Member] USD ($) | Mar. 31, 2015 Lider [Member] Omitted Comprehensive Income From Equity Investment [Member] Investments in unconsolidated affiliates [Member] USD ($) | Mar. 31, 2015 Lider [Member] Omitted Comprehensive Income From Equity Investment [Member] Deferred tax asset [Member] USD ($) | Mar. 31, 2015 Lider [Member] Omitted Comprehensive Income From Equity Investment [Member] Accumulated other comprehensive income (loss) [Member] USD ($) | Dec. 31, 2013 Lider [Member] Tax amnesty [Member] USD ($) | Mar. 31, 2014 Lider [Member] Tax amnesty [Member] USD ($) | Nov. 30, 2013 Lider [Member] Tax amnesty [Member] USD ($) | Mar. 31, 2014 Lider [Member] Tax amnesty [Member] USD ($) | Mar. 31, 2014 Lider [Member] Tax amnesty [Member] BRL | Mar. 31, 2015 Lider [Member] Aircraft [Member] aircraft | Mar. 31, 2015 Lider [Member] Fixed Wing Aircraft [Member] aircraft | Mar. 31, 2015 Helideck Certification Agency [Member] USD ($) | Mar. 31, 2015 Helideck Certification Agency [Member] GBP (£) | Mar. 31, 2014 Helideck Certification Agency [Member] | Mar. 31, 2015 Cougar [Member] USD ($) | Mar. 31, 2014 Cougar [Member] USD ($) | Mar. 31, 2013 Cougar [Member] USD ($) | Apr. 30, 2015 Cougar [Member] Subsequent Event [Member] USD ($) | Mar. 31, 2015 Other Unconsolidated Significant Affiliates [Member] USD ($) | Mar. 31, 2014 Other Unconsolidated Significant Affiliates [Member] USD ($) | Mar. 31, 2013 Other Unconsolidated Significant Affiliates [Member] USD ($)
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of variable interest entities |  |  |  |  |  |  |  |  | 4 brs_NumberOfVariableInterestEntities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in Variable Interest Entity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 49.00%us-gaap_VariableInterestEntityOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 49.00%us-gaap_VariableInterestEntityOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  | 40.00%us-gaap_VariableInterestEntityOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowHelicoptersNigeriaLtdMember |  | 50.17%us-gaap_VariableInterestEntityOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_PanAfricanAirlinesNigeriaLtdMember | 48.50%us-gaap_VariableInterestEntityOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_AviashelfAviationCoMember | 51.00%us-gaap_VariableInterestEntityOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowHelicopterLeasingMember | 51.00%us-gaap_VariableInterestEntityOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_SakhalinBristowAirServicesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Shares, Number |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 brs_ClassOfSharesNumber / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage in Variable Interest Entity, Third Party |  |  |  |  |  |  |  |  |  |  |  |  | 46.00%brs_VariableInterestEntityQualitativeorQuantitativeInformationOwnershipPercentageThirdParty / brs_ThirdpartyAxis = brs_CaledoniaInvestmentsPlcMember | 5.00%brs_VariableInterestEntityQualitativeorQuantitativeInformationOwnershipPercentageThirdParty / brs_ThirdpartyAxis = us-gaap_EuropeanUnionMember | 10.00%brs_VariableInterestEntityQualitativeorQuantitativeInformationOwnershipPercentageThirdParty / brs_ThirdpartyAxis = brs_UnrelatedLocalNigerianPartnersMember |  |  | 48.00%brs_VariableInterestEntityQualitativeorQuantitativeInformationOwnershipPercentageThirdParty / brs_ThirdpartyAxis = brs_NigerianCompanyownedby100NigerianEmployeesMember |  | 2.00%brs_VariableInterestEntityQualitativeorQuantitativeInformationOwnershipPercentageThirdParty / brs_ThirdpartyAxis = brs_EmployeeTrustFundMember | 51.00%brs_VariableInterestEntityQualitativeorQuantitativeInformationOwnershipPercentageThirdParty / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number Of Voting Rights |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 brs_NumberOfVotingRights / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 1 brs_NumberOfVotingRights / us-gaap_TitleOfIndividualAxis = brs_DirectorTwoMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 3 brs_NumberOfVotingRights / brs_ThirdpartyAxis = brs_CaledoniaInvestmentsPlcMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Board Of Directors Nomination |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 brs_NumberofBoardOfDirectorsNomination / brs_ThirdpartyAxis = brs_CaledoniaInvestmentsPlcMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity, Qualitative or Quantitative Information, Purchased Percentage From Third Party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 29.00%brs_VariableInterestEntityQualitativeorQuantitativeInformationPurchasedPercentageFromThirdParty / brs_ThirdpartyAxis = brs_NigerianCompanyownedby100NigerianEmployeesMember | 19.00%brs_VariableInterestEntityQualitativeorQuantitativeInformationPurchasedPercentageFromThirdParty / brs_ThirdpartyAxis = brs_NigerianCompanyownedby100NigerianEmployeesMember |  | 2.00%brs_VariableInterestEntityQualitativeorQuantitativeInformationPurchasedPercentageFromThirdParty / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember / brs_ThirdpartyAxis = brs_NigerianCompanyownedby100NigerianEmployeesMember |  |  |  |  |  |  |  |  |  |  |  |  | 8.00%brs_VariableInterestEntityQualitativeorQuantitativeInformationPurchasedPercentageFromThirdParty / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowHelicoptersNigeriaLtdMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of deferred stock shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,000,000 brs_VariableInterestEntityDeferredStockPurchase / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 8,000,000 brs_VariableInterestEntityDeferredStockPurchase / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Share Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | £ 1 us-gaap_BusinessAcquisitionSharePrice / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total amount paid for deferred shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 14,400,000 brs_TotalAmountPaidForDeferredShares / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of subordinated unsecured loan stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 135,100,000 us-gaap_UnsecuredDebt / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  | 91,000,000 us-gaap_UnsecuredDebt / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate on unsecured loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13.50%us-gaap_SubordinatedBorrowingInterestRate / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred interest cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,500,000,000 us-gaap_InterestExpenseDebt / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Call option price held by noncontrolling interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 brs_CallOptionPriceHeldByNoncontrollingInterest / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Call Option Guaranteed Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.00%brs_CallOptionGuaranteedRate / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  | 12.00%brs_CallOptionGuaranteedRate / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 12.00%brs_CallOptionGuaranteedRate / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Put Option Guaranteed Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00%brs_PutOptionGuaranteedRate / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number Of Joint Ventures |  |  |  |  |  |  |  |  | 2 brs_NumberOfJointVentures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Option to acquire additional interest in affiliate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.50%brs_OptionToAcquireAdditionalInterestinAffiliate / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_AviashelfAviationCoMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interests- beginning balance |  |  |  | 8,651,000 us-gaap_MinorityInterest |  |  |  |  | 8,651,000 us-gaap_MinorityInterest |  |  |  |  |  |  |  |  |  |  |  | 1,645,000 us-gaap_MinorityInterest / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 1,492,000 us-gaap_MinorityInterest / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 1,577,000 us-gaap_MinorityInterest / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to non-controlling interest shareholders |  |  |  |  |  |  |  |  | (59,000)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders | (57,000)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders | (63,000)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders |  |  |  |  |  |  |  |  |  | (59,000)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | (57,000)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | (63,000)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 4,407,000 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | 1,042,000 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | 1,573,000 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |  |  |  |  |  |  |  |  |  | 58,000 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 57,000 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 60,000 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Currency translation adjustments |  |  |  |  |  |  |  |  | (71,617,000)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax | 18,729,000 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax | (11,982,000)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax |  |  |  |  |  |  |  |  |  | (187,000)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 153,000 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | (82,000)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interests- ending balance | 7,256,000 us-gaap_MinorityInterest |  |  |  | 8,651,000 us-gaap_MinorityInterest |  |  |  | 7,256,000 us-gaap_MinorityInterest | 8,651,000 us-gaap_MinorityInterest |  |  |  |  |  |  |  |  |  |  | 1,457,000 us-gaap_MinorityInterest / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 1,645,000 us-gaap_MinorityInterest / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 1,492,000 us-gaap_MinorityInterest / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
VIE Financial Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents | 104,146,000 us-gaap_CashAndCashEquivalentsAtCarryingValue |  |  |  | 204,341,000 us-gaap_CashAndCashEquivalentsAtCarryingValue |  |  |  | 104,146,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | 204,341,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | 215,623,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | 261,550,000 us-gaap_CashAndCashEquivalentsAtCarryingValue |  |  |  |  |  |  |  |  | 91,190,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 173,490,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts Receivable Net Current | 258,618,000 us-gaap_AccountsReceivableNetCurrent |  |  |  | 297,443,000 us-gaap_AccountsReceivableNetCurrent |  |  |  | 258,618,000 us-gaap_AccountsReceivableNetCurrent | 297,443,000 us-gaap_AccountsReceivableNetCurrent |  |  |  |  |  |  |  |  |  |  | 521,989,000 us-gaap_AccountsReceivableNetCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 311,641,000 us-gaap_AccountsReceivableNetCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Inventories | 147,169,000 us-gaap_InventoryNet |  |  |  | 137,463,000 us-gaap_InventoryNet |  |  |  | 147,169,000 us-gaap_InventoryNet | 137,463,000 us-gaap_InventoryNet |  |  |  |  |  |  |  |  |  |  | 100,065,000 us-gaap_InventoryNet / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 94,288,000 us-gaap_InventoryNet / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prepaid expenses and other current assets | 70,091,000 us-gaap_PrepaidExpenseAndOtherAssetsCurrent |  |  |  | 53,084,000 us-gaap_PrepaidExpenseAndOtherAssetsCurrent |  |  |  | 70,091,000 us-gaap_PrepaidExpenseAndOtherAssetsCurrent | 53,084,000 us-gaap_PrepaidExpenseAndOtherAssetsCurrent |  |  |  |  |  |  |  |  |  |  | 42,659,000 us-gaap_PrepaidExpenseAndOtherAssetsCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 45,791,000 us-gaap_PrepaidExpenseAndOtherAssetsCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total current assets | 637,851,000 us-gaap_AssetsCurrent |  |  |  | 721,607,000 us-gaap_AssetsCurrent |  |  |  | 637,851,000 us-gaap_AssetsCurrent | 721,607,000 us-gaap_AssetsCurrent |  |  |  |  |  |  |  |  |  |  | 755,903,000 us-gaap_AssetsCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 625,210,000 us-gaap_AssetsCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment in unconsolidated affiliates | 216,376,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures |  |  |  | 262,615,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures |  |  |  | 216,376,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures | 262,615,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures |  |  |  |  |  |  |  |  |  |  | 64,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 1,414,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,286,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_PetroleumAirServicesMember | 6,286,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_PetroleumAirServicesMember |  |  |  |  | 149,010,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember | 193,345,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 61,015,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember | 61,570,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember |  |  | 65,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_OtherUnconsolidatedSignificantAffiliatesMember | 1,414,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_OtherUnconsolidatedSignificantAffiliatesMember |
Total property and equipment, net | 2,157,101,000 us-gaap_PropertyPlantAndEquipmentNet |  |  |  | 2,268,751,000 us-gaap_PropertyPlantAndEquipmentNet |  |  |  | 2,157,101,000 us-gaap_PropertyPlantAndEquipmentNet | 2,268,751,000 us-gaap_PropertyPlantAndEquipmentNet |  |  |  |  |  |  |  |  |  |  | 243,357,000 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 217,969,000 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | 75,628,000 us-gaap_Goodwill |  |  |  | 56,680,000 us-gaap_Goodwill |  |  |  | 75,628,000 us-gaap_Goodwill | 56,680,000 us-gaap_Goodwill | 28,897,000 us-gaap_Goodwill |  |  |  |  |  |  |  |  |  | 61,242,000 us-gaap_Goodwill / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 41,218,000 us-gaap_Goodwill / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other assets | 143,764,000 us-gaap_OtherAssetsNoncurrent |  |  |  | 88,604,000 us-gaap_OtherAssetsNoncurrent |  |  |  | 143,764,000 us-gaap_OtherAssetsNoncurrent | 88,604,000 us-gaap_OtherAssetsNoncurrent |  |  |  |  |  |  |  |  |  |  | 78,637,000 us-gaap_OtherAssetsNoncurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 45,477,000 us-gaap_OtherAssetsNoncurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets | 3,230,720,000 us-gaap_Assets |  |  |  | 3,398,257,000 us-gaap_Assets |  |  |  | 3,230,720,000 us-gaap_Assets | 3,398,257,000 us-gaap_Assets |  |  |  |  |  |  |  |  |  |  | 1,139,203,000 us-gaap_Assets / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 931,288,000 us-gaap_Assets / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable current | 84,193,000 us-gaap_AccountsPayableCurrent |  |  |  | 89,818,000 us-gaap_AccountsPayableCurrent |  |  |  | 84,193,000 us-gaap_AccountsPayableCurrent | 89,818,000 us-gaap_AccountsPayableCurrent |  |  |  |  |  |  |  |  |  |  | 379,357,000 us-gaap_AccountsPayableCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 182,892,000 us-gaap_AccountsPayableCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued Liabilities Current | 258,445,000 us-gaap_AccruedLiabilitiesCurrent |  |  |  | 204,498,000 us-gaap_AccruedLiabilitiesCurrent |  |  |  | 258,445,000 us-gaap_AccruedLiabilitiesCurrent | 204,498,000 us-gaap_AccruedLiabilitiesCurrent |  |  |  |  |  |  |  |  |  |  | 154,306,000 us-gaap_AccruedLiabilitiesCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 113,820,000 us-gaap_AccruedLiabilitiesCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued interest | 12,831,000 us-gaap_InterestPayableCurrent |  |  |  | 16,157,000 us-gaap_InterestPayableCurrent |  |  |  | 12,831,000 us-gaap_InterestPayableCurrent | 16,157,000 us-gaap_InterestPayableCurrent |  |  |  |  |  |  |  |  |  |  | 1,489,369,000 us-gaap_InterestPayableCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 1,291,581,000 us-gaap_InterestPayableCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Tax Liabilities Current | 17,704,000 us-gaap_DeferredTaxLiabilitiesCurrent |  |  |  | 12,372,000 us-gaap_DeferredTaxLiabilitiesCurrent |  |  |  | 17,704,000 us-gaap_DeferredTaxLiabilitiesCurrent | 12,372,000 us-gaap_DeferredTaxLiabilitiesCurrent |  |  |  |  |  |  |  |  |  |  | 1,128,000 us-gaap_DeferredTaxLiabilitiesCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 3,588,000 us-gaap_DeferredTaxLiabilitiesCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term borrowings and current maturities of long-term debt | 18,730,000 us-gaap_DebtCurrent |  |  |  | 14,207,000 us-gaap_DebtCurrent |  |  |  | 18,730,000 us-gaap_DebtCurrent | 14,207,000 us-gaap_DebtCurrent |  |  |  |  |  |  |  |  |  |  | 9,643,000 us-gaap_DebtCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 9,664,000 us-gaap_DebtCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total current liabilities | 435,006,000 us-gaap_LiabilitiesCurrent |  |  |  | 457,825,000 us-gaap_LiabilitiesCurrent |  |  |  | 435,006,000 us-gaap_LiabilitiesCurrent | 457,825,000 us-gaap_LiabilitiesCurrent |  |  |  |  |  |  |  |  |  |  | 2,033,803,000 us-gaap_LiabilitiesCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 1,601,545,000 us-gaap_LiabilitiesCurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total long-term debt | 845,692,000 us-gaap_LongTermDebtNoncurrent |  |  |  | 827,095,000 us-gaap_LongTermDebtNoncurrent |  |  |  | 845,692,000 us-gaap_LongTermDebtNoncurrent | 827,095,000 us-gaap_LongTermDebtNoncurrent |  |  |  |  |  |  |  |  |  |  | 168,245,000 us-gaap_LongTermDebtNoncurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 172,391,000 us-gaap_LongTermDebtNoncurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued pension liabilities | 99,576,000 us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent |  |  |  | 86,823,000 us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent |  |  |  | 99,576,000 us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent | 86,823,000 us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent |  |  |  |  |  |  |  |  |  |  | 99,576,000 us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 86,824,000 us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other liabilities and deferred credits | 39,782,000 us-gaap_OtherLiabilitiesNoncurrent |  |  |  | 78,126,000 us-gaap_OtherLiabilitiesNoncurrent |  |  |  | 39,782,000 us-gaap_OtherLiabilitiesNoncurrent | 78,126,000 us-gaap_OtherLiabilitiesNoncurrent |  |  |  |  |  |  |  |  |  |  | 11,948,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 2,252,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred taxes | 165,655,000 us-gaap_DeferredTaxLiabilitiesNoncurrent |  |  |  | 169,519,000 us-gaap_DeferredTaxLiabilitiesNoncurrent |  |  |  | 165,655,000 us-gaap_DeferredTaxLiabilitiesNoncurrent | 169,519,000 us-gaap_DeferredTaxLiabilitiesNoncurrent |  |  |  |  |  |  |  |  |  |  | 14,457,000 us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 13,062,000 us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Temporary equity | 26,223,000 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount |  |  |  | 22,283,000 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount |  |  |  | 26,223,000 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount | 22,283,000 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount |  |  |  |  |  |  |  |  |  |  | 26,223,000 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 22,283,000 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,354,252,000 us-gaap_Liabilities / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 1,898,357,000 us-gaap_Liabilities / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | 450,355,000 us-gaap_Revenues | 460,140,000 us-gaap_Revenues | 475,636,000 us-gaap_Revenues | 472,538,000 us-gaap_Revenues | 440,925,000 us-gaap_Revenues | 412,335,000 us-gaap_Revenues | 417,328,000 us-gaap_Revenues | 398,994,000 us-gaap_Revenues | 1,858,669,000 us-gaap_Revenues | 1,669,582,000 us-gaap_Revenues | 1,508,473,000 us-gaap_Revenues |  |  |  |  |  |  |  |  |  | 1,512,312,000 us-gaap_Revenues / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 1,324,483,000 us-gaap_Revenues / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 1,161,988,000 us-gaap_Revenues / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40,524,000 us-gaap_OperatingIncomeLoss / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 49,061,000 us-gaap_OperatingIncomeLoss / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 58,587,000 us-gaap_OperatingIncomeLoss / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  |  |  |  |  |  |  |  | 88,707,000 us-gaap_ProfitLoss | 187,779,000 us-gaap_ProfitLoss | 131,675,000 us-gaap_ProfitLoss |  |  |  |  |  |  |  |  |  | (179,757,000)us-gaap_ProfitLoss / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | (38,274,000)us-gaap_ProfitLoss / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | (115,281,000)us-gaap_ProfitLoss / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unconsolidated affiliates [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition equity interests issued or issuable number of shares issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40 us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember |  |  |  |
Acquisition cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 250,000,000 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember |  |  |  |
Purchase price of interest in Equity Method investment previously paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 23,800,000 brs_PaymentsToAcquireEquityMethodInvestmentsAndAssetPurchasePreviouslyPaid / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember |  |  |  |
Net cash of outlay of equity method investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 226,200,000 brs_BusinessAcquisitionCostOfAcquiredEntityAndAssetPurchaseCashPaid / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember |  |  |  |
Payments for contingent consideration |  |  |  |  |  |  |  |  | 0 brs_PaymentsForContingentConsideration | 6,000,000 brs_PaymentsForContingentConsideration | 0 brs_PaymentsForContingentConsideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,000,000 brs_PaymentsForContingentConsideration / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember |  | 8,000,000 brs_PaymentsForContingentConsideration / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember |  |  |
Business acquisition, percentage of voting interests acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember | 20.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember | 25.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember | 25.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember |  |  |  |
Equity investment ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_PetroleumAirServicesMember | 25.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_PetroleumAirServicesMember |  |  |  | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_FBEntitiesMember | 41.90%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember | 42.50%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_HelideckCertificationAgencyMember | 40.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember | 40.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember | 40.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember |  |  |  |
Purchase price and transaction cost of equity method investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 257,800,000 brs_PurchasePriceAndTransactionCostOfEquityMethodInvestment / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember |  |  |  |
Proceeds from sale of unconsolidated affiliates |  |  |  |  |  |  |  |  | 4,185,000 us-gaap_ProceedsFromSaleOfEquityMethodInvestments | 112,210,000 us-gaap_ProceedsFromSaleOfEquityMethodInvestments | 0 us-gaap_ProceedsFromSaleOfEquityMethodInvestments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 112,200,000 us-gaap_ProceedsFromSaleOfEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_FBEntitiesMember | 74,000,000 us-gaap_ProceedsFromSaleOfEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_FBEntitiesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,200,000 us-gaap_ProceedsFromSaleOfEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_HelideckCertificationAgencyMember | 2,700,000 us-gaap_ProceedsFromSaleOfEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_HelideckCertificationAgencyMember |  |  |  |  |  |  |  |
Business acquisition transaction costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,800,000 us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember |  |  |  |
Potential earn-out payments | 0 us-gaap_BusinessCombinationContingentConsiderationLiability |  |  |  | 0 us-gaap_BusinessCombinationContingentConsiderationLiability |  |  |  | 0 us-gaap_BusinessCombinationContingentConsiderationLiability | 0 us-gaap_BusinessCombinationContingentConsiderationLiability | 34,245,000 us-gaap_BusinessCombinationContingentConsiderationLiability |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40,000,000 us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember |  |  |  |
Potential earn-out payment period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |
Fair value of earn-out | 38,905,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue |  |  |  | 31,322,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue |  |  |  | 38,905,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue | 31,322,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 32,500,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember | 31,300,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember |  |  |  |  |
Number of aircraft operated |  |  |  |  |  |  |  |  | 501 us-gaap_NumberOfAircraftOperated |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 59 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = brs_AircraftMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember | 26 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = brs_FixedWingAircraftMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember |  |  |  |  |  |  |  |  |  |
Number of aircraft owned |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 45 brs_NumberOfAicraftOwned / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_PetroleumAirServicesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of aircraft leased from affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8 brs_NumberOfAircraftLeasedFromAffiliates / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reporting Of Unconsolidated Affiliate Earnings, Time Difference |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 months |  |  |  |  |  |
Number Of Renewal Extensions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 brs_NumberOfRenewalExtensions / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_FBEntitiesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Renewal Extension Term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Taxes Paid |  |  |  |  |  |  |  |  | 34,800,000 us-gaap_IncomeTaxesPaid | 59,100,000 us-gaap_IncomeTaxesPaid | 24,100,000 us-gaap_IncomeTaxesPaid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 27,000,000 us-gaap_IncomeTaxesPaid / us-gaap_UnusualOrInfrequentItemAxis = brs_TaxAmnestyMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember | 62,700,000 us-gaap_IncomeTaxesPaid / us-gaap_UnusualOrInfrequentItemAxis = brs_TaxAmnestyMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember |  |  |  |  |  |  |  |  |  |  |  |
Tax Adjustments, Settlements, and Unusual Provisions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40,200,000 us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions / us-gaap_UnusualOrInfrequentItemAxis = brs_TaxAmnestyMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember | 93,300,000 us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions / us-gaap_UnusualOrInfrequentItemAxis = brs_TaxAmnestyMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember |  |  |  |  |  |  |  |  |  |  |  |
Reduction In Tax Assessment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,200,000 brs_ReductionInTaxAssessment / us-gaap_UnusualOrInfrequentItemAxis = brs_TaxAmnestyMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember | 30,600,000 brs_ReductionInTaxAssessment / us-gaap_UnusualOrInfrequentItemAxis = brs_TaxAmnestyMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember |  |  |  |  |  |  |  |  |  |  |  |
Quantifying Misstatement in Current Year Financial Statements, Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (36,400,000)us-gaap_QuantifyingMisstatementInCurrentYearFinancialStatementsAmount / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / us-gaap_QuantifyingMisstatementInCurrentYearFinancialStatementsByNatureOfErrorAxis = brs_OmittedComprehensiveIncomeFromEquityInvestmentMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember | 12,700,000 us-gaap_QuantifyingMisstatementInCurrentYearFinancialStatementsAmount / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherAssetsMember / us-gaap_QuantifyingMisstatementInCurrentYearFinancialStatementsByNatureOfErrorAxis = brs_OmittedComprehensiveIncomeFromEquityInvestmentMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember | (23,600,000)us-gaap_QuantifyingMisstatementInCurrentYearFinancialStatementsAmount / us-gaap_BalanceSheetLocationAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_QuantifyingMisstatementInCurrentYearFinancialStatementsByNatureOfErrorAxis = brs_OmittedComprehensiveIncomeFromEquityInvestmentMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost Method Investment Dividends Or Distributions |  |  |  |  |  |  |  |  | 2,068,000 brs_CostMethodInvestmentDividendsOrDistributions | 4,043,000 brs_CostMethodInvestmentDividendsOrDistributions | 28,000 brs_CostMethodInvestmentDividendsOrDistributions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (Loss) from Equity Method Investments |  |  |  |  |  |  |  |  | (3,839,000)us-gaap_IncomeLossFromEquityMethodInvestments | 8,666,000 us-gaap_IncomeLossFromEquityMethodInvestments | 25,042,000 us-gaap_IncomeLossFromEquityMethodInvestments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_FBEntitiesMember | 3,217,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_FBEntitiesMember |  | 10,517,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_FBEntitiesMember | (4,236,000)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember | 2,898,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember | 14,762,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember |  |  |  | (2,200,000)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_UnusualOrInfrequentItemAxis = brs_TaxAmnestyMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember | 1,700,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_UnusualOrInfrequentItemAxis = brs_TaxAmnestyMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember | (17,100,000)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_UnusualOrInfrequentItemAxis = brs_TaxAmnestyMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember | (13,600,000)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_UnusualOrInfrequentItemAxis = brs_TaxAmnestyMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember |  |  |  |  |  |  | (710,000)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember | 1,053,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember | (736,000)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember |  | 1,107,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_OtherUnconsolidatedSignificantAffiliatesMember | 1,498,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_OtherUnconsolidatedSignificantAffiliatesMember | 499,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_OtherUnconsolidatedSignificantAffiliatesMember
Earnings from unconsolidated affiliates, net of losses |  |  |  |  |  |  |  |  | (1,771,000)brs_EarningsFromUnconsolidatedAffiliates | 12,709,000 brs_EarningsFromUnconsolidatedAffiliates | 25,070,000 brs_EarningsFromUnconsolidatedAffiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends from Equity Method Investments |  |  |  |  |  |  |  |  | 5,600,000 us-gaap_EquityMethodInvestmentDividendsOrDistributions | 10,300,000 us-gaap_EquityMethodInvestmentDividendsOrDistributions | 16,200,000 us-gaap_EquityMethodInvestmentDividendsOrDistributions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment in unconsolidated affiliates | 216,376,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures |  |  |  | 262,615,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures |  |  |  | 216,376,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures | 262,615,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures |  |  |  |  |  |  |  |  |  |  | 64,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember | 1,414,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_BristowAviationHoldingsLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,286,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_PetroleumAirServicesMember | 6,286,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_PetroleumAirServicesMember |  |  |  |  | 149,010,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember | 193,345,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 61,015,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember | 61,570,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_CougarMember |  |  | 65,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_OtherUnconsolidatedSignificantAffiliatesMember | 1,414,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_OtherUnconsolidatedSignificantAffiliatesMember |
Gain on sale of unconsolidated affiliates |  |  |  |  |  |  |  |  | 3,921,000 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal | 103,924,000 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal | 0 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 103,900,000 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_FBEntitiesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,900,000 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_HelideckCertificationAgencyMember |  |  |  |  |  |  |  |  |
Proceed from indemnity due to tax assessment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,500,000 brs_Proceedfromindemnityduetotaxassessment / us-gaap_UnusualOrInfrequentItemAxis = brs_TaxAmnestyMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_LiderMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of Combined Financial Information Equity Method Investments [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current Assets | 200,979,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets |  |  |  | 216,345,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets |  |  |  | 200,979,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets | 216,345,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-current Assets | 384,438,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets |  |  |  | 440,470,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets |  |  |  | 384,438,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets | 440,470,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets | 585,417,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets |  |  |  | 656,815,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets |  |  |  | 585,417,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets | 656,815,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current Liabilities | 189,251,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities |  |  |  | 171,604,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities |  |  |  | 189,251,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities | 171,604,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-current Liabilities | 255,318,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities |  |  |  | 274,907,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities |  |  |  | 255,318,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities | 274,907,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity | 140,848,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity |  |  |  | 210,304,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity |  |  |  | 140,848,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity | 210,304,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total liabilities and equity | 585,417,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity |  |  |  | 656,815,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity |  |  |  | 585,417,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity | 656,815,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 499,692,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue | 632,832,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue | 578,175,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross profit |  |  |  |  |  |  |  |  | 99,127,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss | 132,760,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss | 126,007,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  |  |  |  |  |  |  |  | 559,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss | 21,728,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss | 57,712,000 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment Realized Gain Loss On Disposal Net Of Tax |  |  |  |  |  |  |  |  | $ 67,900,000 brs_EquityMethodInvestmentRealizedGainLossOnDisposalNetOfTax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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