Derivatives and Hedging Activities - Effect of Derivative Instruments on Condensed Consolidated Statements of Operations (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized on Derivatives in Earnings	$ (2.4)	$ 4.1	$ (2.7)	$ (16.0)
Designated as Hedging Instruments [Member] | Foreign Currency Forward Contracts [Member]
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized on Derivatives in Earnings	(1.1)	0.5	1.2	0.2
Designated as Hedging Instruments [Member] | Interest Rate Swaps [Member]
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized on Derivatives in Earnings	0.5		1.0
Not Designated as Hedging Instruments [Member] | Foreign Currency Forward Contracts [Member]
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized on Derivatives in Earnings	$ (1.8)	$ 3.6	$ (4.9)	$ (16.2)