Derivative Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Dec. 31, 2012
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional amounts of the forward contracts	$ 143.8
Foreign exchange forward contracts, settlement, period, in days	30 days
Net loss (gain) from forward contracts, recorded in selling, general and administrative expense	(2.6)	0.9
Net (liability) asset recorded in other current assets or accounts payable and accrued expenses	$ (1.1)		$ 0.9