Derivative Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Sep. 30, 2012 Day	Oct. 02, 2011	Dec. 31, 2011
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional amounts of the forward contracts	$ 124.0		$ 124.0
Foreign exchange forward contracts, settlement, period, in days			30
Net loss (gain) from forward contracts, recorded in selling, general and administrative expense	1.7	4.0	0.2	5.3
Net (liability) asset recorded in other current assets or accounts payable and accrued expenses	$ 1.7		$ 1.7		$ (0.8)