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				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Income	$ (3.8)	[1]	$ (1.5)	[1]	$ (7.9)	[1]	$ (2.4)	[1]
Cash Flow Hedging | Foreign Exchange Contract
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Income	(4.5)	[1]	(0.1)	[1]	(7.7)	[1]	(1.0)	[1]
Cash Flow Hedging | Commodity Contract
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Income	0.7	[1]	(1.6)	[1]	(0.2)	[1]	(1.6)	[1]
Fair value derivatives | Interest Rate Swap
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Income			$ 0.2	[1]			$ 0.2	[1]

[1] Classified in SG&A.