Gain and Loss Activity Related to Derivative Financial Instruments Not Designated as Effective Hedges (Detail) - Derivatives that are not designated as effective hedges - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss), Recognized in Income	$ 3.5	$ (4.6)	$ (1.8)
Cash flow hedges | Foreign Exchange Contract
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss), Recognized in Income	14.7	4.3	(2.7)
Cash flow hedges | Commodity Contract
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss), Recognized in Income	$ (11.2)	$ (8.9)	$ 0.9