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Derivatives and Hedging Activities - Fair Value of Derivative Instruments (Detail) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Derivatives, Fair Value [Line Items]    
Fair Value of Asset Derivatives $ 15.2 $ 10.5
Fair Value of (Liability) Derivatives (46.2) (51.5)
Foreign Currency Forward Contracts [Member] | Designated as Hedging Instruments [Member]
   
Derivatives, Fair Value [Line Items]    
Fair Value of Asset Derivatives 1.2 3.4
Fair Value of (Liability) Derivatives (1.3) (1.4)
Foreign Currency Forward Contracts [Member] | Not Designated as Hedging Instruments [Member]
   
Derivatives, Fair Value [Line Items]    
Fair Value of Asset Derivatives 13.4 7.1
Fair Value of (Liability) Derivatives (44.9) (49.1)
Interest Rate Swaps [Member] | Designated as Hedging Instruments [Member]
   
Derivatives, Fair Value [Line Items]    
Fair Value of Asset Derivatives 0.6  
Fair Value of (Liability) Derivatives   $ (1.0)