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
	Mar. 31, 2014	Mar. 31, 2013
Not Designated as Hedging Instrument | Foreign Exchange Forward Contracts | Selling, General and Administrative Expenses
Derivative Instruments Gain Loss [Line Items]
Classification of Gain Recognized in the Condensed Consolidated Statements of Operations	$ (0.4)	$ (12.8)