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Derivative Instruments Fair Value of Derivative Instruments (Details) (Not Designated as Hedging Instrument [Member], USD $)
In Millions, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Derivatives, Fair Value [Line Items]    
Derivative liabilities, fair value $ 1.4 $ 0
Foreign Currency Forward Contracts [Member] | Accounts Payable and Accrued Liabilities [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative liabilities, fair value $ 1.4 $ 0