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TAXES (Details) (USD $)
3 Months Ended 9 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Income Tax Examination [Line Items]        
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate 88.90%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 13.40%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 20.10%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 24.90%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Income Tax Expense (Benefit) $ 567,000us-gaap_IncomeTaxExpenseBenefit $ 2,946,000us-gaap_IncomeTaxExpenseBenefit $ 18,376,000us-gaap_IncomeTaxExpenseBenefit $ 51,682,000us-gaap_IncomeTaxExpenseBenefit
Effective Tax Rate Excluding Special Items   23.10%brs_EffectiveTaxRateExcludingSpecialItems   19.60%brs_EffectiveTaxRateExcludingSpecialItems
Unrecognized Tax Benefits 500,000us-gaap_UnrecognizedTaxBenefits   500,000us-gaap_UnrecognizedTaxBenefits  
FB Entities [Member]        
Income Tax Examination [Line Items]        
Income Tax Expense (Benefit)   0us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= brs_FBEntitiesMember
  36,300,000us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= brs_FBEntitiesMember
Eastern Airways [Member]        
Income Tax Examination [Line Items]        
Ownership percentage in Variable Interest Entity     60.00%us-gaap_VariableInterestEntityOwnershipPercentage
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= brs_EasternAirwaysInternationalLimitedMember
 
Tax indemnity asset 100,000brs_Taxindemnityasset
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= brs_EasternAirwaysInternationalLimitedMember
  100,000brs_Taxindemnityasset
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= brs_EasternAirwaysInternationalLimitedMember
 
Lider Taxi Aereo S.A. [Member]        
Income Tax Examination [Line Items]        
Income Tax Expense (Benefit)   (6,200,000)us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= brs_LiderTaxiAereoS.A.Member
  (6,200,000)us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= brs_LiderTaxiAereoS.A.Member
UNITED KINGDOM        
Income Tax Examination [Line Items]        
Income Tax Expense (Benefit)   $ 0us-gaap_IncomeTaxExpenseBenefit
/ dei_EntityByLocationAxis
= country_GB
  $ (2,100,000)us-gaap_IncomeTaxExpenseBenefit
/ dei_EntityByLocationAxis
= country_GB