v2.4.1.9

COMMITMENTS AND CONTINGENCIES (Details) (USD $)	12 Months Ended			1 Months Ended
	Mar. 31, 2015 aircraft Facility	Mar. 31, 2014 aircraft	Mar. 31, 2013 aircraft	Nov. 30, 2005 Affiliates
Analysis of aircraft orders and options [Roll Forward]
Number Of Signed Client Contracts	13brs_NumberOfSignedClientContracts
Number of Aircraft Orders Subject To Successful Development	17brs_NumberOfAircraftOrdersSubjectToSuccessfulDevelopment
Number Of Aircrafts Purchased Without Orders	3brs_NumberOfAircraftsPurchasedWithoutOrders
Leases, Operating [Abstract]
Operating leases rental expense	$ 164,800,000us-gaap_OperatingLeasesRentExpenseNet	$ 105,800,000us-gaap_OperatingLeasesRentExpenseNet	$ 67,400,000us-gaap_OperatingLeasesRentExpenseNet
Operating Leases, Future Minimum Payments Due, Current	166,444,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
Operating Leases, Future Minimum Payments, Due in Two Years	163,248,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
Operating Leases, Future Minimum Payments, Due in Three Years	146,271,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
Operating Leases, Future Minimum Payments, Due in Four Years	118,705,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
Operating Leases, Future Minimum Payments, Due in Five Years	79,792,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
Operating Leases, Future Minimum Payments, Due Thereafter	78,614,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter
Operating Leases, Future Minimum Payments Due	753,074,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue
Number of aircraft sale leaseback	14brs_NumberOfAircraftSaleLeaseback	14brs_NumberOfAircraftSaleLeaseback	11brs_NumberOfAircraftSaleLeaseback
Number of agreements to lease back aircraft	14brs_Numberofagreementstoleasebackaircraft	14brs_Numberofagreementstoleasebackaircraft
Proceeds from assignment of aircraft purchase agreements	0brs_ProceedsfromAssignmentofAircraftPurchaseAgreements	106,113,000brs_ProceedsfromAssignmentofAircraftPurchaseAgreements	0brs_ProceedsfromAssignmentofAircraftPurchaseAgreements
Number Of Aircraft Assigned Future Payments	2brs_NumberOfAircraftAssignedFuturePayments	7brs_NumberOfAircraftAssignedFuturePayments
Sale Leaseback Transaction, Gross Proceeds	380,700,000us-gaap_SaleLeasebackTransactionGrossProceedsInvestingActivities	246,400,000us-gaap_SaleLeasebackTransactionGrossProceedsInvestingActivities	255,800,000us-gaap_SaleLeasebackTransactionGrossProceedsInvestingActivities
Number of operating lease	82brs_NumberOfOperatingLease
Monthly Rent payment	13,143,000us-gaap_SaleLeasebackTransactionMonthlyRentalPayments
Collective Bargaining Agreements, Maximum Annual Escalation Per Employee, Percent	6.00%brs_CollectiveBargainingAgreementsMaximumAnnualEscalationPerEmployeePercent
Officer Compensation Expense	5,500,000brs_OfficerCompensationExpense	2,900,000brs_OfficerCompensationExpense	2,000,000brs_OfficerCompensationExpense
Site Contingency, Number of Locations	3brs_SiteContingencyNumberofLocations
Loss Contingency, Range of Possible Loss, Minimum	5,000,000us-gaap_LossContingencyRangeOfPossibleLossMinimum
Loss Contingency, Range of Possible Loss, Maximum	8,000,000us-gaap_LossContingencyRangeOfPossibleLossMaximum
West Africa [Member]
Leases, Operating [Abstract]
Work force reductions costs	900,000us-gaap_SeveranceCosts1 / us-gaap_StatementBusinessSegmentsAxis = brs_WestAfricaMember
Alaska [Member]
Leases, Operating [Abstract]
Work force reductions costs	900,000us-gaap_SeveranceCosts1 / us-gaap_StatementGeographicalAxis = stpr_AK	2,900,000us-gaap_SeveranceCosts1 / us-gaap_StatementGeographicalAxis = stpr_AK
Southern North Sea [Member]
Leases, Operating [Abstract]
Work force reductions costs		2,100,000us-gaap_SeveranceCosts1 / us-gaap_StatementGeographicalAxis = brs_SouthernNorthSeaMember	2,200,000us-gaap_SeveranceCosts1 / us-gaap_StatementGeographicalAxis = brs_SouthernNorthSeaMember
Unionized Employees Concentration Risk [Member]
Leases, Operating [Abstract]
Concentration Risk, Percentage	45.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_UnionizedEmployeesConcentrationRiskMember
Unionized Employees Concentration Risk [Member] | One year [Member]
Leases, Operating [Abstract]
Concentration Risk, Percentage	18.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_UnionizedEmployeesConcentrationRiskMember / brs_PeriodAxis = brs_YearOneMember
Aircraft Operating Lease [Member]
Leases, Operating [Abstract]
Operating leases rental expense	138,300,000us-gaap_OperatingLeasesRentExpenseNet / brs_OperatingLeaseTypeAxis = brs_AircraftOperatingLeaseMember	83,500,000us-gaap_OperatingLeasesRentExpenseNet / brs_OperatingLeaseTypeAxis = brs_AircraftOperatingLeaseMember	46,800,000us-gaap_OperatingLeasesRentExpenseNet / brs_OperatingLeaseTypeAxis = brs_AircraftOperatingLeaseMember
Operating Leases, Future Minimum Payments Due, Current	158,066,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent / brs_OperatingLeaseTypeAxis = brs_AircraftOperatingLeaseMember
Operating Leases, Future Minimum Payments, Due in Two Years	155,450,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears / brs_OperatingLeaseTypeAxis = brs_AircraftOperatingLeaseMember
Operating Leases, Future Minimum Payments, Due in Three Years	137,407,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears / brs_OperatingLeaseTypeAxis = brs_AircraftOperatingLeaseMember
Operating Leases, Future Minimum Payments, Due in Four Years	110,139,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears / brs_OperatingLeaseTypeAxis = brs_AircraftOperatingLeaseMember
Operating Leases, Future Minimum Payments, Due in Five Years	72,232,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears / brs_OperatingLeaseTypeAxis = brs_AircraftOperatingLeaseMember
Operating Leases, Future Minimum Payments, Due Thereafter	26,999,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter / brs_OperatingLeaseTypeAxis = brs_AircraftOperatingLeaseMember
Operating Leases, Future Minimum Payments Due	660,293,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue / brs_OperatingLeaseTypeAxis = brs_AircraftOperatingLeaseMember
Other Operating Lease [Member]
Leases, Operating [Abstract]
Operating Leases, Future Minimum Payments Due, Current	8,378,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent / brs_OperatingLeaseTypeAxis = brs_OtherOperatingLeaseMember
Operating Leases, Future Minimum Payments, Due in Two Years	7,798,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears / brs_OperatingLeaseTypeAxis = brs_OtherOperatingLeaseMember
Operating Leases, Future Minimum Payments, Due in Three Years	8,864,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears / brs_OperatingLeaseTypeAxis = brs_OtherOperatingLeaseMember
Operating Leases, Future Minimum Payments, Due in Four Years	8,566,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears / brs_OperatingLeaseTypeAxis = brs_OtherOperatingLeaseMember
Operating Leases, Future Minimum Payments, Due in Five Years	7,560,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears / brs_OperatingLeaseTypeAxis = brs_OtherOperatingLeaseMember
Operating Leases, Future Minimum Payments, Due Thereafter	51,615,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter / brs_OperatingLeaseTypeAxis = brs_OtherOperatingLeaseMember
Operating Leases, Future Minimum Payments Due	92,781,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue / brs_OperatingLeaseTypeAxis = brs_OtherOperatingLeaseMember
Fiscal Year 2016 To Fiscal Year 2017 [Member]
Leases, Operating [Abstract]
Number of operating lease	11brs_NumberOfOperatingLease / brs_AircraftOperatingLeaseTermsAxis = brs_FiscalYearOneToFiscalYearTwoMember
Monthly Rent payment	1,627,000us-gaap_SaleLeasebackTransactionMonthlyRentalPayments / brs_AircraftOperatingLeaseTermsAxis = brs_FiscalYearOneToFiscalYearTwoMember
Fiscal Year 2018 To Fiscal Year 2020 [Member]
Leases, Operating [Abstract]
Number of operating lease	49brs_NumberOfOperatingLease / brs_AircraftOperatingLeaseTermsAxis = brs_FiscalYearThreeToFiscalYearFiveMember
Monthly Rent payment	9,512,000us-gaap_SaleLeasebackTransactionMonthlyRentalPayments / brs_AircraftOperatingLeaseTermsAxis = brs_FiscalYearThreeToFiscalYearFiveMember
Fiscal Year 2021 To Fiscal Year 2024 [Member]
Leases, Operating [Abstract]
Number of operating lease	22brs_NumberOfOperatingLease / brs_AircraftOperatingLeaseTermsAxis = brs_FiscalYearSixToFiscalYearTenMember
Monthly Rent payment	2,004,000us-gaap_SaleLeasebackTransactionMonthlyRentalPayments / brs_AircraftOperatingLeaseTermsAxis = brs_FiscalYearSixToFiscalYearTenMember
Nigerian Litigation [Member]
Leases, Operating [Abstract]
Number Of Affiliates				2brs_NumberOfAffiliates / us-gaap_LitigationCaseAxis = brs_NigerianLitigationMember
Loss Contingency, Damages Sought, Value				16,300,000us-gaap_LossContingencyDamagesSoughtValue / us-gaap_LitigationCaseAxis = brs_NigerianLitigationMember
Maximum [Member]
Leases, Operating [Abstract]
Sale Leaseback Transaction, Lease Terms, Number of Months	180brs_SaleLeasebackTransactionLeaseTermsNumberofMonths / us-gaap_RangeAxis = us-gaap_MaximumMember
Sale Leaseback Transaction, Lease Terms, Number of Months, Renewal Option	240brs_SaleLeasebackTransactionLeaseTermsNumberofMonthsRenewalOption / us-gaap_RangeAxis = us-gaap_MaximumMember
Commitments [Member]
Analysis of aircraft orders and options [Roll Forward]
Number of aircraft - beginning balance	43brs_NumberOfAircraftBalance / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	45brs_NumberOfAircraftBalance / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	15brs_NumberOfAircraftBalance / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember
Number of aircraft delivered	(18)brs_NumberOfAircraftDelivered / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	(21)brs_NumberOfAircraftDelivered / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	(8)brs_NumberOfAircraftDelivered / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember
Number of aircraft ordered	8brs_NumberOfAircraftOrdered / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	18brs_NumberOfAircraftOrdered / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	26brs_NumberOfAircraftOrdered / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember
Number of new options	0brs_NewOptions / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	0brs_NewOptions / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	0brs_NewOptions / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember
Number of exercised options	12brs_ExercisedOptions / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	8brs_ExercisedOptions / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	12brs_ExercisedOptions / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember
Number of expired options	0brs_ExpiredOptions / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	0brs_ExpiredOptions / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	0brs_ExpiredOptions / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember
Number of orders assigned subject to leaseback	0brs_OrdersTransferred / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	(7)brs_OrdersTransferred / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	0brs_OrdersTransferred / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember
Number of aircraft - ending balance	45brs_NumberOfAircraftBalance / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	43brs_NumberOfAircraftBalance / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember	45brs_NumberOfAircraftBalance / brs_AircraftPurchaseContractsTypeAxis = us-gaap_CommitmentsMember
Options [Member]
Analysis of aircraft orders and options [Roll Forward]
Number of aircraft - beginning balance	55brs_NumberOfAircraftBalance / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	70brs_NumberOfAircraftBalance / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	40brs_NumberOfAircraftBalance / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember
Number of aircraft delivered	0brs_NumberOfAircraftDelivered / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	0brs_NumberOfAircraftDelivered / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	0brs_NumberOfAircraftDelivered / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember
Number of aircraft ordered	0brs_NumberOfAircraftOrdered / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	0brs_NumberOfAircraftOrdered / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	0brs_NumberOfAircraftOrdered / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember
Number of new options	0brs_NewOptions / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	0brs_NewOptions / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	42brs_NewOptions / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember
Number of exercised options	(12)brs_ExercisedOptions / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	(8)brs_ExercisedOptions / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	(12)brs_ExercisedOptions / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember
Number of expired options	(13)brs_ExpiredOptions / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	(7)brs_ExpiredOptions / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	0brs_ExpiredOptions / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember
Number of orders assigned subject to leaseback	0brs_OrdersTransferred / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	0brs_OrdersTransferred / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	0brs_OrdersTransferred / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember
Number of aircraft - ending balance	30brs_NumberOfAircraftBalance / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	55brs_NumberOfAircraftBalance / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember	70brs_NumberOfAircraftBalance / brs_AircraftPurchaseContractsTypeAxis = brs_OptionsMember
Aircraft [Member]
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Unrecorded Unconditional Purchase Obligation Minimum Quantity Required Due In Year One	27brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearOne / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Unconditional Purchase Obligation, Minimum Quantity Required, Due In Year Two	5brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearTwo / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Unconditional Purchase Obligation, Minimum Quantity Required, Due In Year Three	6brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearThree / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Unconditional Purchase Obligation Minimum Quantity Required Due In Year Four And After	7brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearFourAndAfter / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Unconditional Purchase Obligation, Minimum Quantity Required	45us-gaap_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequired / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Unconditional Purchase Obligation, Due in Next Twelve Months	416,617,000us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Unconditional Purchase Obligation, Due within Two Years	88,547,000us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Unconditional Purchase Obligation, Due within Three Years	75,936,000us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Unconditional Purchase Obligation, Due within Four Years And After	87,231,000brs_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversaryAndAfter / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Unconditional Purchase Obligation	668,331,000us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Options [Abstract]
Unrecorded Conditional Purchase Obligation Maximum Quantity Required Due In Year One	3brs_UnrecordedConditionalPurchaseObligationMaximumQuantityRequiredDueInYearOne / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Conditional Purchase Obligation, Maximum Quantity Required, Due In Year Two	13brs_UnrecordedConditionalPurchaseObligationMaximumQuantityRequiredDueInYearTwo / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Conditional Purchase Obligation, Maximum Quantity Required, Due In Year Three	14brs_UnrecordedConditionalPurchaseObligationMaximumQuantityRequiredDueInYearThree / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Conditional Purchase Obligation Maximum Quantity Required Due In Year Four And After	0brs_UnrecordedConditionalPurchaseObligationMaximumQuantityRequiredDueInYearFourAndAfter / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Conditional Purchase Obligation Maximum Quantity Required	30brs_UnrecordedConditionalPurchaseObligationMaximumQuantityRequired / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Conditional Purchase Obligation Balance On First Anniversary	124,382,000brs_UnrecordedConditionalPurchaseObligationBalanceOnFirstAnniversary / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Conditional Purchase Obligation Balance On Second Anniversary	286,814,000brs_UnrecordedConditionalPurchaseObligationBalanceOnSecondAnniversary / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Conditional Purchase Obligation Balance On Third Anniversary	183,060,000brs_UnrecordedConditionalPurchaseObligationBalanceOnThirdAnniversary / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Conditional Purchase Obligation Balance On Fourth Anniversary And After	0brs_UnrecordedConditionalPurchaseObligationBalanceOnFourthAnniversaryAndAfter / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Unrecorded Conditional Purchase Obligation Balance Sheet Amount	594,256,000brs_UnrecordedConditionalPurchaseObligationBalanceSheetAmount / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember
Aircraft [Member] | Medium Aircraft [Member]
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Unrecorded Unconditional Purchase Obligation Minimum Quantity Required Due In Year One	8brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearOne / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_MediumAircraftMember
Unrecorded Unconditional Purchase Obligation, Minimum Quantity Required, Due In Year Two	0brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearTwo / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_MediumAircraftMember
Unrecorded Unconditional Purchase Obligation, Minimum Quantity Required, Due In Year Three	0brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearThree / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_MediumAircraftMember
Unrecorded Unconditional Purchase Obligation Minimum Quantity Required Due In Year Four And After	0brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearFourAndAfter / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_MediumAircraftMember
Unrecorded Unconditional Purchase Obligation, Minimum Quantity Required	8us-gaap_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequired / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_MediumAircraftMember
Options [Abstract]
Unrecorded Conditional Purchase Obligation Maximum Quantity Required Due In Year One	3brs_UnrecordedConditionalPurchaseObligationMaximumQuantityRequiredDueInYearOne / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_MediumAircraftMember
Unrecorded Conditional Purchase Obligation, Maximum Quantity Required, Due In Year Two	4brs_UnrecordedConditionalPurchaseObligationMaximumQuantityRequiredDueInYearTwo / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_MediumAircraftMember
Unrecorded Conditional Purchase Obligation, Maximum Quantity Required, Due In Year Three	7brs_UnrecordedConditionalPurchaseObligationMaximumQuantityRequiredDueInYearThree / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_MediumAircraftMember
Unrecorded Conditional Purchase Obligation Maximum Quantity Required Due In Year Four And After	0brs_UnrecordedConditionalPurchaseObligationMaximumQuantityRequiredDueInYearFourAndAfter / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_MediumAircraftMember
Unrecorded Conditional Purchase Obligation Maximum Quantity Required	14brs_UnrecordedConditionalPurchaseObligationMaximumQuantityRequired / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_MediumAircraftMember
Aircraft [Member] | Large Aircraft [Member]
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Unrecorded Unconditional Purchase Obligation Minimum Quantity Required Due In Year One	10brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearOne / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_LargeAircraftMember
Unrecorded Unconditional Purchase Obligation, Minimum Quantity Required, Due In Year Two	5brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearTwo / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_LargeAircraftMember
Unrecorded Unconditional Purchase Obligation, Minimum Quantity Required, Due In Year Three	6brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearThree / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_LargeAircraftMember
Unrecorded Unconditional Purchase Obligation Minimum Quantity Required Due In Year Four And After	7brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearFourAndAfter / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_LargeAircraftMember
Unrecorded Unconditional Purchase Obligation, Minimum Quantity Required	28us-gaap_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequired / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_LargeAircraftMember
Options [Abstract]
Unrecorded Conditional Purchase Obligation Maximum Quantity Required Due In Year One	0brs_UnrecordedConditionalPurchaseObligationMaximumQuantityRequiredDueInYearOne / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_LargeAircraftMember
Unrecorded Conditional Purchase Obligation, Maximum Quantity Required, Due In Year Two	9brs_UnrecordedConditionalPurchaseObligationMaximumQuantityRequiredDueInYearTwo / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_LargeAircraftMember
Unrecorded Conditional Purchase Obligation, Maximum Quantity Required, Due In Year Three	7brs_UnrecordedConditionalPurchaseObligationMaximumQuantityRequiredDueInYearThree / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_LargeAircraftMember
Unrecorded Conditional Purchase Obligation Maximum Quantity Required Due In Year Four And After	0brs_UnrecordedConditionalPurchaseObligationMaximumQuantityRequiredDueInYearFourAndAfter / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_LargeAircraftMember
Unrecorded Conditional Purchase Obligation Maximum Quantity Required	16brs_UnrecordedConditionalPurchaseObligationMaximumQuantityRequired / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_LargeAircraftMember
Aircraft [Member] | U.K. SAR [Member]
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Unrecorded Unconditional Purchase Obligation Minimum Quantity Required Due In Year One	9brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearOne / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_U.K.SARMember
Unrecorded Unconditional Purchase Obligation, Minimum Quantity Required, Due In Year Two	0brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearTwo / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_U.K.SARMember
Unrecorded Unconditional Purchase Obligation, Minimum Quantity Required, Due In Year Three	0brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearThree / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_U.K.SARMember
Unrecorded Unconditional Purchase Obligation Minimum Quantity Required Due In Year Four And After	0brs_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequiredDueInYearFourAndAfter / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_U.K.SARMember
Unrecorded Unconditional Purchase Obligation, Minimum Quantity Required	9us-gaap_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequired / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_U.K.SARMember
Unrecorded Unconditional Purchase Obligation, Due in Next Twelve Months	122,796,000us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_U.K.SARMember
Unrecorded Unconditional Purchase Obligation, Due within Two Years	0us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_U.K.SARMember
Unrecorded Unconditional Purchase Obligation, Due within Three Years	0us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_U.K.SARMember
Unrecorded Unconditional Purchase Obligation, Due within Four Years And After	0brs_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversaryAndAfter / brs_AircraftPurchaseContractsTypeAxis = brs_AircraftMember / us-gaap_AircraftTypeAxis = brs_U.K.SARMember
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Aircraft [Member] | Medium And Large [Member]
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
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