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Derivatives and Hedging Activities - Fair Value of Derivative Instruments (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Derivatives, Fair Value [Line Items]    
Fair Value of Asset Derivatives $ 10.5 $ 5.4
Fair Value of (Liability) Derivatives (51.5) (30.4)
Foreign Currency Forward Contracts [Member] | Designated as Hedging Instruments [Member]
   
Derivatives, Fair Value [Line Items]    
Fair Value of Asset Derivatives 3.4 0.5
Fair Value of (Liability) Derivatives (1.4) (0.8)
Foreign Currency Forward Contracts [Member] | Not Designated as Hedging Instruments [Member]
   
Derivatives, Fair Value [Line Items]    
Fair Value of Asset Derivatives 7.1 4.9
Fair Value of (Liability) Derivatives (49.1) (29.6)
Interest Rate Swaps [Member] | Designated as Hedging Instruments [Member]
   
Derivatives, Fair Value [Line Items]    
Fair Value of Asset Derivatives      
Fair Value of (Liability) Derivatives $ (1.0)