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TAXES (Details) (USD $)
 12 Months Ended
Mar. 31, 2015
aircraft
Mar. 31, 2014
Mar. 31, 2013
Feb. 06, 2014
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]        
Domestic $ (40,602,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ (14,357,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ 2,472,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic  
Foreign 152,075,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 259,348,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 164,205,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign  
Components of Deferred Tax Assets and Liabilities [Line Items]        
Deferred tax assets - foreign tax credits 31,134,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign 17,628,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign    
Deferred Tax Assets, Net operating loss 17,487,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards 15,627,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards    
Deferred tax assets - accrued pension liability 21,657,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations 18,531,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations    
Deferred tax assets - maintenance and repair 0brs_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsMaintenanceAndRepair 12,674,000brs_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsMaintenanceAndRepair    
Deferred tax assets - equity compensation 12,728,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost 11,627,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost    
Deferred tax assets - deferred revenues 2,156,000us-gaap_DeferredTaxAssetsDeferredIncome 2,124,000us-gaap_DeferredTaxAssetsDeferredIncome    
Deferred tax assets - employee award programs 7,515,000brs_DeferredTaxAssetsEmployeeAwardPrograms1 6,289,000brs_DeferredTaxAssetsEmployeeAwardPrograms1    
Deferred tax assets - employee payroll accruals 5,118,000brs_DeferredTaxAssetsEmployeePayrollAccruals1 4,845,000brs_DeferredTaxAssetsEmployeePayrollAccruals1    
Deferred tax assets, inventory 5,259,000us-gaap_DeferredTaxAssetsInventory 5,784,000us-gaap_DeferredTaxAssetsInventory    
Deferred tax assets, unconsolidated affiliates 6,539,000us-gaap_DeferredTaxAssetsEquityMethodInvestments 0us-gaap_DeferredTaxAssetsEquityMethodInvestments    
Deferred tax assets - other 4,790,000us-gaap_DeferredTaxAssetsOther 3,188,000us-gaap_DeferredTaxAssetsOther    
Deferred Tax Assets, Valuation Allowance (11,700,000)us-gaap_DeferredTaxAssetsValuationAllowance (6,896,000)us-gaap_DeferredTaxAssetsValuationAllowance    
Total deferred tax assets 102,683,000us-gaap_DeferredTaxAssetsGross 91,421,000us-gaap_DeferredTaxAssetsGross    
Deferred Tax Liabilities- property and equipment (207,395,000)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment (205,104,000)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment    
Deferred Tax Liabilities- inventories (196,000)us-gaap_DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts (12,740,000)us-gaap_DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts    
Deferred Tax Liabilities- investments in unconsolidated affiliates 0us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates (8,985,000)us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates    
Deferred tax liabilities - employee programs (1,564,000)brs_DeferredTaxLiabilitiesEmployeePrograms1 (1,895,000)brs_DeferredTaxLiabilitiesEmployeePrograms1    
Deferred Tax Liabilities- other (8,378,000)us-gaap_DeferredTaxLiabilitiesOther (9,195,000)us-gaap_DeferredTaxLiabilitiesOther    
Total deferred tax liabilities (217,533,000)us-gaap_DeferredTaxLiabilities (237,919,000)us-gaap_DeferredTaxLiabilities    
Net deferred tax liabilities (114,850,000)us-gaap_DeferredTaxAssetsLiabilitiesNet (146,498,000)us-gaap_DeferredTaxAssetsLiabilitiesNet    
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount 4,800,000us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount      
UK Corporate Tax Rate Benefit   2,900,000brs_TaxBenefitRelatingToUkRateChanges 2,900,000brs_TaxBenefitRelatingToUkRateChanges  
Number of aircraft involved in intercompany leasing transaction 11brs_NumberOfAircraftIntercompanyLeasingTransaction      
Remaining Useful Life of an intercompany leasing transaction 13 years      
Tax Benefit from intercompany leasing transaction 2,900,000us-gaap_AdjustmentForLongTermIntercompanyTransactionsTaxBenefitExpense 2,900,000us-gaap_AdjustmentForLongTermIntercompanyTransactionsTaxBenefitExpense 2,900,000us-gaap_AdjustmentForLongTermIntercompanyTransactionsTaxBenefitExpense  
Unrecognized Tax Benefits Period Increase Decrease 500,000us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease (1,500,000)us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease 100,000us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease  
Interest and Penalties 400,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense 100,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense 100,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense  
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]        
Unrecognized Tax Benefits- beginning balance 4,380,000us-gaap_UnrecognizedTaxBenefits 1,710,000us-gaap_UnrecognizedTaxBenefits    
Business Combination, Indemnification Assets, Amount as of Acquisition Date 0us-gaap_BusinessCombinationIndemnificationAssetsAmountAsOfAcquisitionDate 4,193,000us-gaap_BusinessCombinationIndemnificationAssetsAmountAsOfAcquisitionDate    
Increase in Tax Reserve 591,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 129,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions    
Decrease in Tax Reserve 0us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions (1,434,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions    
Decrease Resulting from Settlements with Taxing Authorities (67,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities (218,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities    
Unrecognized Tax Benefits- ending balance 4,904,000us-gaap_UnrecognizedTaxBenefits 4,380,000us-gaap_UnrecognizedTaxBenefits 1,710,000us-gaap_UnrecognizedTaxBenefits  
Unremitted foreign earnings reinvested abroad 805,300,000brs_UnremittedForeignEarningsReinvestedAbroad 679,300,000brs_UnremittedForeignEarningsReinvestedAbroad    
Tax benefit attributable to options exercised 1,600,000us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions 5,700,000us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions 500,000us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions  
Income Taxes Paid 34,800,000us-gaap_IncomeTaxesPaid 59,100,000us-gaap_IncomeTaxesPaid 24,100,000us-gaap_IncomeTaxesPaid  
Effective Income Tax Rate Reconciliation, Tax Contingency, Percent [Abstract]        
Statutory rate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate  
Net foreign taxes on non-U.S. earnings 26.30%us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential 11.80%us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential 14.40%us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential  
Foreign earnings indefinitely reinvested abroad (47.00%)us-gaap_EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings (18.90%)us-gaap_EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings (28.40%)us-gaap_EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings  
Change in Valuation Allowance 4.00%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance 1.80%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance  
Foreign earnings that are currently taxed in the U.S. 8.70%brs_EffectiveIncomeTaxRateReconciliationForeignEarningsTaxedInUs 4.10%brs_EffectiveIncomeTaxRateReconciliationForeignEarningsTaxedInUs 4.60%brs_EffectiveIncomeTaxRateReconciliationForeignEarningsTaxedInUs  
Effect of reduction in U.K. corporate income tax rate 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate (1.20%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate (1.70%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate  
Dividend inclusion 0.00%brs_EffectiveIncomeTaxRateReconciliationDividendInclusion 1.10%brs_EffectiveIncomeTaxRateReconciliationDividendInclusion 0.00%brs_EffectiveIncomeTaxRateReconciliationDividendInclusion  
Benefit of current year foreign tax credits (11.30%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsForeign (5.20%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsForeign (5.50%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsForeign  
Tax reserve release (0.10%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies (0.70%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies  
Other, net 4.80%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments (4.40%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments 2.60%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments  
Effective Tax Rate Total 20.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations 23.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations 21.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations  
Effective Income Tax Rate Reconciliation, Amount [Abstract]        
Current domestic provision for income taxes 4,000us-gaap_CurrentFederalTaxExpenseBenefit 36,872,000us-gaap_CurrentFederalTaxExpenseBenefit 1,638,000us-gaap_CurrentFederalTaxExpenseBenefit  
Current foreign provision for income taxes 34,822,000us-gaap_CurrentForeignTaxExpenseBenefit 33,939,000us-gaap_CurrentForeignTaxExpenseBenefit 26,275,000us-gaap_CurrentForeignTaxExpenseBenefit  
Current provision for income taxes total 34,826,000us-gaap_CurrentIncomeTaxExpenseBenefit 70,811,000us-gaap_CurrentIncomeTaxExpenseBenefit 27,913,000us-gaap_CurrentIncomeTaxExpenseBenefit  
Deferred domestic provision for income taxes (11,358,000)us-gaap_DeferredFederalIncomeTaxExpenseBenefit (6,646,000)us-gaap_DeferredFederalIncomeTaxExpenseBenefit 1,619,000us-gaap_DeferredFederalIncomeTaxExpenseBenefit  
Deferred foreign provision for income taxes (702,000)us-gaap_DeferredForeignIncomeTaxExpenseBenefit (6,953,000)us-gaap_DeferredForeignIncomeTaxExpenseBenefit 5,470,000us-gaap_DeferredForeignIncomeTaxExpenseBenefit  
Deferred Income Tax Expense (Benefit), Total (12,060,000)us-gaap_DeferredIncomeTaxExpenseBenefit (13,599,000)us-gaap_DeferredIncomeTaxExpenseBenefit 7,089,000us-gaap_DeferredIncomeTaxExpenseBenefit  
Income Tax Expense (Benefit) 22,766,000us-gaap_IncomeTaxExpenseBenefit 57,212,000us-gaap_IncomeTaxExpenseBenefit 35,002,000us-gaap_IncomeTaxExpenseBenefit  
United States [Member]        
Components of Deferred Tax Assets and Liabilities [Line Items]        
Open tax years by jurisdiction 2012      
U.K. [Member]        
Components of Deferred Tax Assets and Liabilities [Line Items]        
Open tax years by jurisdiction 2012      
Nigeria [Member]        
Components of Deferred Tax Assets and Liabilities [Line Items]        
Open tax years by jurisdiction 2005      
Trinidad [Member]        
Components of Deferred Tax Assets and Liabilities [Line Items]        
Open tax years by jurisdiction 2005      
Australia [Member]        
Components of Deferred Tax Assets and Liabilities [Line Items]        
Open tax years by jurisdiction 2011      
Year 2021 [Member]        
Components of Deferred Tax Assets and Liabilities [Line Items]        
Deferred tax assets - foreign tax credits 6,600,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign
/ brs_ForeignTaxCreditExpirationYearsAxis
= brs_Year2021Member		      
Year 2022 [Member]        
Components of Deferred Tax Assets and Liabilities [Line Items]        
Deferred tax assets - foreign tax credits 3,900,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign
/ brs_ForeignTaxCreditExpirationYearsAxis
= brs_Year2022Member		      
Year 2023 [Member]        
Components of Deferred Tax Assets and Liabilities [Line Items]        
Deferred tax assets - foreign tax credits 200,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign
/ brs_ForeignTaxCreditExpirationYearsAxis
= brs_Year2023Member		      
Year 2024 [Member]        
Components of Deferred Tax Assets and Liabilities [Line Items]        
Deferred tax assets - foreign tax credits 6,900,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign
/ brs_ForeignTaxCreditExpirationYearsAxis
= brs_Year2024Member		      
Year 2025 [Member]        
Components of Deferred Tax Assets and Liabilities [Line Items]        
Deferred tax assets - foreign tax credits 13,500,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign
/ brs_ForeignTaxCreditExpirationYearsAxis
= brs_Year2025Member		      
Eastern Airways International Limited [Member]        
Components of Deferred Tax Assets and Liabilities [Line Items]        
Business acquisition, percentage of voting interests acquired       60.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_BusinessAcquisitionAxis
= brs_EasternAirwaysInternationalLimitedMember
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]        
Business Combination, Indemnification Assets, Amount as of Acquisition Date   $ 4,193,000us-gaap_BusinessCombinationIndemnificationAssetsAmountAsOfAcquisitionDate
/ us-gaap_BusinessAcquisitionAxis
= brs_EasternAirwaysInternationalLimitedMember