Gain and Loss Activity Related to Derivative Financial Instruments Not Designated as Effective Hedges (Detail) (Derivatives Not Designated As Effective Hedges, USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Income	$ 6.5	[1]	$ (1.1)	[1]
Cash Flow Hedging | Foreign Exchange Contract
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Income	6.4	[1]	(1.9)	[1]
Cash Flow Hedging | Commodity Contract
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Income	0.1	[1]	0.5	[1]
Fair value derivatives | Interest Rate Swap
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Income			$ 0.3	[1]

[1] Classified in SG&A.