Effect of Derivative Instruments not Designated as Hedging Instruments on Consolidated Statements of Operations (Detail) (Foreign Currency Forward And Option Contracts, USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 28, 2012		Sep. 30, 2011		Sep. 28, 2012		Sep. 30, 2011
Foreign Currency Forward And Option Contracts
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized in Other Expense, net	$ 0.1	[1]	$ (1.2)	[1]	$ (0.5)	[1]	$ 5.3	[1]

[1] The gains or losses from changes in the fair value of the derivative contracts are generally offset by gains or losses of the underlying transactions being hedged.