v2.4.1.9

DEBT (Details) (USD $) | 12 Months Ended | 0 Months Ended | 276 Months Ended | 12 Months Ended | 0 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2013 | Nov. 22, 2010 | Dec. 22, 2011 | Oct. 12, 2012 | Jun. 15, 2038 | Mar. 31, 2012 | Jun. 15, 2035 | Jun. 15, 2030 | Jun. 15, 2025 | Jun. 15, 2020 | Jun. 15, 2015 | Apr. 29, 2013 | Apr. 17, 2015
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt | $ 864,422,000 us-gaap_DebtLongtermAndShorttermCombinedAmount | $ 841,302,000 us-gaap_DebtLongtermAndShorttermCombinedAmount |  |  |  |  |  |  |  |  |  |  |  |  |
Less short-term borrowings and current maturities of long-term debt | (18,730,000)us-gaap_LongTermDebtCurrent | (14,207,000)us-gaap_LongTermDebtCurrent |  |  |  |  |  |  |  |  |  |  |  |  |
Total long-term debt | 845,692,000 us-gaap_LongTermDebtNoncurrent | 827,095,000 us-gaap_LongTermDebtNoncurrent |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of debt | (2,591,000)us-gaap_GainsLossesOnExtinguishmentOfDebt | 0 us-gaap_GainsLossesOnExtinguishmentOfDebt | (14,932,000)us-gaap_GainsLossesOnExtinguishmentOfDebt |  |  |  |  |  |  |  |  |  |  |  |
Write off of deferred debt issuance cost | 660,000 us-gaap_WriteOffOfDeferredDebtIssuanceCost | 12,733,000 us-gaap_WriteOffOfDeferredDebtIssuanceCost | 4,642,000 us-gaap_WriteOffOfDeferredDebtIssuanceCost |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from borrowings | 454,393,000 us-gaap_ProceedsFromIssuanceOfDebt | 533,064,000 us-gaap_ProceedsFromIssuanceOfDebt | 675,449,000 us-gaap_ProceedsFromIssuanceOfDebt |  |  |  |  |  |  |  |  |  |  |  |
Interest Paid | 38,000,000 us-gaap_InterestPaid | 38,400,000 us-gaap_InterestPaid | 25,900,000 us-gaap_InterestPaid |  |  |  |  |  |  |  |  |  |  |  |
Capitalized Interest | 14,600,000 us-gaap_InterestCostsIncurredCapitalized | 14,100,000 us-gaap_InterestCostsIncurredCapitalized | 6,600,000 us-gaap_InterestCostsIncurredCapitalized |  |  |  |  |  |  |  |  |  |  |  |
Term Loan And Revolving Credit Facility [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage Of Domestic Capital Stock Guarantee | 100.00%brs_PercentageOfDomesticCapitalStockGuarantee |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage Of Foreign Capital Stock Guarantee | 65.00%brs_PercentageOfForeignCapitalStockGuarantee |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion Feature [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Per Principal Amount Of Convertible Debt | 1,000 brs_PerPrincipalAmountOfConvertibleDebt |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balances Of Debt And Equity Components [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt component- unamortized discount | (1,300,000)us-gaap_DebtInstrumentUnamortizedDiscount |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long Term Convertible Debt Current And Noncurrent [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of debt discount | 4,323,000 us-gaap_AmortizationOfDebtDiscountPremium | 3,708,000 us-gaap_AmortizationOfDebtDiscountPremium | 3,597,000 us-gaap_AmortizationOfDebtDiscountPremium |  |  |  |  |  |  |  |  |  |  |  |
Annual Maturities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year 2016 | 18,730,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year 2017 | 30,945,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year 2018 | 26,480,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year 2019 | 35,994,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year 2020 | 228,755,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive |  |  |  |  |  |  |  |  |  |  |  |  |  |
Thereafter | 524,853,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Gross | 865,757,000 us-gaap_DebtInstrumentCarryingAmount |  |  |  |  |  |  |  |  |  |  |  |  |  |
Excess Conversion [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion Feature [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Per Principal Amount Of Convertible Debt | 1,000 brs_PerPrincipalAmountOfConvertibleDebt / us-gaap_DebtConversionByUniqueDescriptionAxis = brs_ExcessConversionMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan And Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  | 375,000,000 us-gaap_DebtInstrumentFaceAmount / brs_TermLoanandRevolvingCreditFacilityAxis = brs_TermLoanAndRevolvingCreditFacility1Member |  |  |  |  |  |  |  |  |  |  |
Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  | 175,000,000 us-gaap_DebtInstrumentFaceAmount / brs_TermLoanandRevolvingCreditFacilityAxis = brs_CreditFacilityMember |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |
Term Loan And Revolving Credit Facility [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |
Credit Facility [Member] | First Amendment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | 200,000,000 us-gaap_DebtInstrumentFaceAmount / brs_AmendedandRestatedCreditFacilityAxis = brs_FirstAmendmentMember / brs_TermLoanandRevolvingCreditFacilityAxis = brs_CreditFacilityMember |  |  |  |  |  |  |  |  |  |
Credit Facility [Member] | Third Amendment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  |  |  |  |  | 350,000,000 us-gaap_DebtInstrumentFaceAmount / brs_AmendedandRestatedCreditFacilityAxis = brs_ThirdAmendmentMember / brs_TermLoanandRevolvingCreditFacilityAxis = brs_CreditFacilityMember |
Credit Facility [Member] | Fifth Amendment [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 400,000,000 us-gaap_DebtInstrumentFaceAmount / brs_AmendedandRestatedCreditFacilityAxis = brs_FifthAmendmentMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember / brs_TermLoanandRevolvingCreditFacilityAxis = brs_CreditFacilityMember
Letters Of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  | 30,000,000 us-gaap_DebtInstrumentFaceAmount / brs_TermLoanandRevolvingCreditFacilityAxis = brs_LettersOfCreditMember |  |  |  |  |  |  |  |  |  |  |
Term Loan And Revolving Credit Facility [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount | 500,000 us-gaap_LettersOfCreditOutstandingAmount / brs_TermLoanandRevolvingCreditFacilityAxis = brs_LettersOfCreditMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Five Year Term Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  | 200,000,000 us-gaap_DebtInstrumentFaceAmount / brs_TermLoanandRevolvingCreditFacilityAxis = brs_FiveYearTermLoanMember |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |
Term Loan And Revolving Credit Facility [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |
Five Year Term Loan [Member] | First Amendment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | 250,000,000 us-gaap_DebtInstrumentFaceAmount / brs_AmendedandRestatedCreditFacilityAxis = brs_FirstAmendmentMember / brs_TermLoanandRevolvingCreditFacilityAxis = brs_FiveYearTermLoanMember |  |  |  |  |  |  |  |  |  |
Proceeds from borrowings |  |  |  |  | 50,000,000 us-gaap_ProceedsFromIssuanceOfDebt / brs_AmendedandRestatedCreditFacilityAxis = brs_FirstAmendmentMember / brs_TermLoanandRevolvingCreditFacilityAxis = brs_FiveYearTermLoanMember |  |  |  |  |  |  |  |  |  |
Term Loan And Revolving Credit Facility [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument balloon payment |  |  |  |  | 133,800,000 brs_DebtInstrumentBalloonPayment / brs_AmendedandRestatedCreditFacilityAxis = brs_FirstAmendmentMember / brs_TermLoanandRevolvingCreditFacilityAxis = brs_FiveYearTermLoanMember |  |  |  |  |  |  |  |  |  |
Senior Notes [Member] | Senior Notes Due 2022 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt | 401,535,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_DebtInstrumentAxis = brs_SeniorNotesDue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember | 450,000,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_DebtInstrumentAxis = brs_SeniorNotesDue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = brs_SeniorNotesDue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Redemption Price Percentage Of Principal Amount May Redeemed Before First Call Date |  |  |  |  |  | 0.35 brs_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountMayRedeemedBeforeFirstCallDate / us-gaap_DebtInstrumentAxis = brs_SeniorNotesDue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  |  |  |  | 106.25%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentAxis = brs_SeniorNotesDue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |
Debt Instrument, Original Principal Remaining Percentage, After First Call Redemption Before First Call Date |  |  |  |  |  | 65.00%brs_DebtInstrumentOriginalPrincipalRemainingPercentageAfterFirstCallRedemptionBeforeFirstCallDate / us-gaap_DebtInstrumentAxis = brs_SeniorNotesDue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | 450,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = brs_SeniorNotesDue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |
Debt Issuance Costs |  |  |  |  |  | 7,400,000 us-gaap_DebtIssuanceCosts / us-gaap_DebtInstrumentAxis = brs_SeniorNotesDue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |
Debt Instrument, Repurchase Amount | 48,500,000 us-gaap_DebtInstrumentRepurchaseAmount / us-gaap_DebtInstrumentAxis = brs_SeniorNotesDue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total consideration paid | 52,000,000 brs_TotalConsiderationPaid / us-gaap_DebtInstrumentAxis = brs_SeniorNotesDue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of debt | (2,591,000)us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_DebtInstrumentAxis = brs_SeniorNotesDue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Write off of deferred debt issuance cost | 700,000 us-gaap_WriteOffOfDeferredDebtIssuanceCost / us-gaap_DebtInstrumentAxis = brs_SeniorNotesDue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes [Member] | Senior Notes Due 2022 [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption premium rate | 103.75%brs_Redemptionpremiumrate / us-gaap_DebtInstrumentAxis = brs_SeniorNotesDue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes [Member] | Senior Notes Due 2022 [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption premium rate | 107.75%brs_Redemptionpremiumrate / us-gaap_DebtInstrumentAxis = brs_SeniorNotesDue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt | 222,179,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_LongtermDebtTypeAxis = brs_TermLoanMember | 226,604,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_LongtermDebtTypeAxis = brs_TermLoanMember |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment of debt | 4,500,000 us-gaap_RepaymentsOfDebt / us-gaap_LongtermDebtTypeAxis = brs_TermLoanMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 222,600,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_LongtermDebtTypeAxis = brs_TermLoanMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Term Loan [Member] | Fifth Amendment [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 350,000,000 us-gaap_DebtInstrumentFaceAmount / brs_AmendedandRestatedCreditFacilityAxis = brs_FifthAmendmentMember / us-gaap_LongtermDebtTypeAxis = brs_TermLoanMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Convertible Senior Notes Due 2038 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt | 114,109,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | 109,904,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 3.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  |  |  |  |  | 100.00%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 6.90%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | 6.90%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | 6.90%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | 115,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | 115,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Conversion Price | $ 73.07 us-gaap_DebtInstrumentConvertibleConversionPrice1 / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion Feature [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Conversion Ratio | 13.6849 us-gaap_DebtInstrumentConvertibleConversionRatio1 / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Per Principal Amount Of Convertible Debt | 1,000 brs_PerPrincipalAmountOfConvertibleDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balances Of Debt And Equity Components [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity component- net carrying value | 14,905,000 us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | 14,905,000 us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |  |  |  |  |
Debt component- unamortized discount | (891,000)us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | (5,096,000)us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |  |  |  |  |
Debt component- net carrying value | 114,109,000 us-gaap_ConvertibleDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | 109,904,000 us-gaap_ConvertibleDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |  |  |  |  |
Long Term Convertible Debt Current And Noncurrent [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contractual coupon interest | 3,450,000 us-gaap_InterestExpenseDebtExcludingAmortization / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | 3,450,000 us-gaap_InterestExpenseDebtExcludingAmortization / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | 3,450,000 us-gaap_InterestExpenseDebtExcludingAmortization / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |  |  |  |
Amortization of debt discount | 4,205,000 us-gaap_AmortizationOfDebtDiscountPremium / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | 3,708,000 us-gaap_AmortizationOfDebtDiscountPremium / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | 3,597,000 us-gaap_AmortizationOfDebtDiscountPremium / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |  |  |  |
Total interest expense | 7,655,000 us-gaap_InterestExpenseDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | 7,158,000 us-gaap_InterestExpenseDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | 7,047,000 us-gaap_InterestExpenseDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |  |  |  |
Convertible Senior Notes Due 2038 [Member] | Excess Conversion [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion Feature [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Conversion Ratio | 8.8952 us-gaap_DebtInstrumentConvertibleConversionRatio1 / us-gaap_DebtConversionByUniqueDescriptionAxis = brs_ExcessConversionMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt | 83,800,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember | 24,000,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 1.93%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember | 1.91%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from borrowings | 453,000,000 us-gaap_ProceedsFromIssuanceOfDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment of debt | 393,200,000 us-gaap_RepaymentsOfDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan And Revolving Credit Facility [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  |  |  |  |  | 0.25%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |  |  |  |
Margin rate |  |  |  |  |  |  |  | 0.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |  |  |  |
Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan And Revolving Credit Facility [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  |  |  |  |  | 0.50%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |  |  |  |
Margin rate |  |  |  |  |  |  |  | 2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |  |  |  |
Other Debt [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt | 0 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_LongtermDebtTypeAxis = brs_OtherDebtMember | 883,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_LongtermDebtTypeAxis = brs_OtherDebtMember |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 11.50%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = brs_OtherDebtMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from borrowings | 1,200,000 us-gaap_ProceedsFromIssuanceOfDebt / us-gaap_LongtermDebtTypeAxis = brs_OtherDebtMember | 1,100,000 us-gaap_ProceedsFromIssuanceOfDebt / us-gaap_LongtermDebtTypeAxis = brs_OtherDebtMember |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment of debt | 2,000,000 us-gaap_RepaymentsOfDebt / us-gaap_LongtermDebtTypeAxis = brs_OtherDebtMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loans And Borrowings [Member] | Airnorth Debt [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt | 22,500,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_DebtInstrumentAxis = brs_AirnorthDebtMember / us-gaap_LongtermDebtTypeAxis = brs_TermLoansAndBorrowingsMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Paper [Member] | Airnorth Debt [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt | 600,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_DebtInstrumentAxis = brs_AirnorthDebtMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CommercialPaperMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 2.31%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = brs_AirnorthDebtMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CommercialPaperMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term | 12 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan And Revolving Credit Facility [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term | 12 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Airnorth [Member] | Other Debt [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt | 23,119,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_LongtermDebtTypeAxis = brs_OtherDebtMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_AirnorthMember | 0 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_LongtermDebtTypeAxis = brs_OtherDebtMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_AirnorthMember |  |  |  |  |  |  |  |  |  |  |  |  |
Airnorth [Member] | Term Loans And Borrowings [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan And Revolving Credit Facility [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Airnorth [Member] | Term Loans And Borrowings [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan And Revolving Credit Facility [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Airnorth [Member] | Term Loans And Borrowings [Member] | Term Loan 1 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan And Revolving Credit Facility [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Margin rate | 2.85%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = brs_TermLoan1Member / us-gaap_LongtermDebtTypeAxis = brs_TermLoansAndBorrowingsMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_AirnorthMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Airnorth [Member] | Term Loans And Borrowings [Member] | Term Loan 1 [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 3.08%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = brs_TermLoan1Member / us-gaap_LongtermDebtTypeAxis = brs_TermLoansAndBorrowingsMember / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_AirnorthMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Airnorth [Member] | Term Loans And Borrowings [Member] | Term Loan 2 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan And Revolving Credit Facility [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Margin rate | 3.10%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = brs_TermLoan2Member / us-gaap_LongtermDebtTypeAxis = brs_TermLoansAndBorrowingsMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_AirnorthMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Airnorth [Member] | Term Loans And Borrowings [Member] | Term Loan 2 [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 5.60%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = brs_TermLoan2Member / us-gaap_LongtermDebtTypeAxis = brs_TermLoansAndBorrowingsMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_AirnorthMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Eastern Airways | Other Debt [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt | $ 19,680,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_LongtermDebtTypeAxis = brs_OtherDebtMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_EasternAirwaysInternationalLimitedMember | $ 29,911,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_LongtermDebtTypeAxis = brs_OtherDebtMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_EasternAirwaysInternationalLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |
Eastern Airways | Other Debt [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 3.225%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = brs_OtherDebtMember / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_EasternAirwaysInternationalLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan And Revolving Credit Facility [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Margin rate | 2.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = brs_OtherDebtMember / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_EasternAirwaysInternationalLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Eastern Airways | Other Debt [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 3.975%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = brs_OtherDebtMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_EasternAirwaysInternationalLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan And Revolving Credit Facility [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Margin rate | 3.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = brs_OtherDebtMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = brs_EasternAirwaysInternationalLimitedMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Scenario, Forecast [Member] | Convertible Senior Notes Due 2038 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion Feature [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Repurchase Price, Percentage Of Principal |  |  |  |  |  |  |  |  | 100.00%brs_DebtInstrumentConvertibleRepurchasePricePercentageOfPrincipal / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember | 100.00%brs_DebtInstrumentConvertibleRepurchasePricePercentageOfPrincipal / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember | 100.00%brs_DebtInstrumentConvertibleRepurchasePricePercentageOfPrincipal / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember | 100.00%brs_DebtInstrumentConvertibleRepurchasePricePercentageOfPrincipal / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember | 100.00%brs_DebtInstrumentConvertibleRepurchasePricePercentageOfPrincipal / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember |  |

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