Pre-Tax Gains Related to Derivatives Not Designated as Hedges (Detail) (Not Designated as Hedging Instrument, Foreign Exchange Forward Contracts, Selling, general and administrative expenses, USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Not Designated as Hedging Instrument | Foreign Exchange Forward Contracts | Selling, general and administrative expenses
Derivative Instruments Gain Loss [Line Items]
Classification of (Gain) Loss Recognized in the Condensed Consolidated Statements of Operations	$ (1.1)	$ 7.3	$ (1.5)	$ (5.5)