Derivatives - Schedule of Pre-Tax (Gains) Losses Related to Derivatives Not Designated as Hedges (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
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	$ (2.6)	$ 8.2	$ 2.6	$ (23.5)