Gross Unrealized Losses from Derivative Instruments (Detail) (Cash Flow Hedging [Member], 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]
Amount of Gain / (Loss) Recognized in OCI	$ (46.4)	$ 29.6	$ (15.7)	$ (40.6)
Amount of Gain / (Loss) Reclassified from OCI	(1.9)	(14.9)	(9.8)	(35.8)
Foreign exchange forward contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain / (Loss) Recognized in OCI	(46.1)	31.8	(14.3)	(42.3)
Foreign exchange forward contracts [Member] | Cost of products sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain / (Loss) Reclassified from OCI	(1.6)	(7.0)	(9.4)	(24.4)
Foreign exchange options [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain / (Loss) Recognized in OCI	(0.3)	(2.2)	(1.4)	1.5
Foreign exchange options [Member] | Cost of products sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain / (Loss) Reclassified from OCI	(0.3)		(0.4)
Cross-currency interest rate swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain / (Loss) Recognized in OCI				0.2
Cross-currency interest rate swaps [Member] | Interest expense net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain / (Loss) Reclassified from OCI		$ (7.9)		$ (11.4)