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Derivative Instruments and Hedging Activities (Details) (Foreign Exchange Contract [Member], USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Gain (loss) recognized on non-designated derivative instruments:    
Gain (loss) recognized on non-designated derivative instruments, total $ 4.2us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet $ (0.2)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Interest expense [Member]
    
Gain (loss) recognized on non-designated derivative instruments:    
Gain (loss) recognized on non-designated derivative instruments, total (1.3)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InterestExpenseMember		 (1.4)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InterestExpenseMember
Foreign exchange gain (loss), net [Member]
    
Gain (loss) recognized on non-designated derivative instruments:    
Gain (loss) recognized on non-designated derivative instruments, total $ 5.5us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ForeignCurrencyGainLossMember		 $ 1.2us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ForeignCurrencyGainLossMember