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FAIR VALUE INFORMATION (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 1 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Long Term Debt $ 2,189.1us-gaap_LongTermDebt $ 1,959.4us-gaap_LongTermDebt   $ 2,189.1us-gaap_LongTermDebt
Amount of debt redemption 1,950.0us-gaap_RepaymentsOfLongTermDebt 0.3us-gaap_RepaymentsOfLongTermDebt 600.5us-gaap_RepaymentsOfLongTermDebt  
Senior Unsecured Notes 5.25 Percent Due 2022        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Amount of debt redemption 1,300.0us-gaap_RepaymentsOfLongTermDebt
/ us-gaap_DebtInstrumentAxis
= beav_SeniorUnsecuredNotesFivePointTwoFivePercentDueTwentyTwentyTwoMember		     1,300.0us-gaap_RepaymentsOfLongTermDebt
/ us-gaap_DebtInstrumentAxis
= beav_SeniorUnsecuredNotesFivePointTwoFivePercentDueTwentyTwentyTwoMember
Senior Unsecured Notes 6.875 Percent Due 2020        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Amount of debt redemption 650.0us-gaap_RepaymentsOfLongTermDebt
/ us-gaap_DebtInstrumentAxis
= beav_SeniorUnsecuredNotesSixPointEightSevenFivePercentDueTwentyTwentyMember		     650.0us-gaap_RepaymentsOfLongTermDebt
/ us-gaap_DebtInstrumentAxis
= beav_SeniorUnsecuredNotesSixPointEightSevenFivePercentDueTwentyTwentyMember
Revolving Credit Facility        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Long Term Debt 0us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember		     0us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
Revolving credit facility 2013 [Member]        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Long Term Debt 0us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= beav_RevolvingCreditFacility2013Member		     0us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= beav_RevolvingCreditFacility2013Member
Fair Value, Inputs, Level 2 | Senior Unsecured Notes        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Senior unsecured notes, fair value   $ 2,058.5us-gaap_LongTermDebtFairValue
/ us-gaap_DebtInstrumentAxis
= beav_SeniorUnsecuredBondsMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member