Summary of Net Gain (Loss) on Foreign Exchange Forwards Not Designated as Hedging Instruments and on Interest Rate Swaps Designated as Fair Value Hedges (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivatives designated as accounting hedges | Interest rate swaps | Interest expense, net
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income	$ 4.2	$ 3.6	$ 4.1
Derivatives not designated as accounting hedges | Foreign Exchange Forwards and Options | Other non-operating (expense) income
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income	$ 2.1	$ 0.9	$ (1.4)