Pretax Amounts related to Foreign Currency Derivative Contracts that were Recognized in and Reclassified from Accumulated Other Comprehensive Income (Loss) (Detail) (Foreign Exchange Contract, Designated as Hedging Instrument, USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Foreign Exchange Contract | Designated as Hedging Instrument
Contracts qualifying for hedge accounting:
Gains (losses) recognized in accumulated other comprehensive loss	$ 18.3	$ (55.2)	$ 48.1	$ (45.8)
(Gains) losses reclassified from accumulated other comprehensive loss	(0.3)	3.9	5.6	1.6
Comprehensive income (loss)	$ 18.0	$ (51.3)	$ 53.7	$ (44.2)