Forward and Option Purchase Contracts Outstanding (Detail) (Foreign Exchange Forward)	9 Months Ended
	Oct. 01, 2011 Currency, British Pound Sterling Derivative Instrument 1 GBP (£)	Oct. 01, 2011 Currency, British Pound Sterling Derivative Instrument 2 GBP (£)	Oct. 01, 2011 Currency, British Pound Sterling Derivative Instrument 3 GBP (£)	Oct. 01, 2011 Currency, Euro EUR (€)	Oct. 01, 2011 Currency, Euro Derivative Instrument 1 EUR (€)	Oct. 01, 2011 Currency, Euro Derivative Instrument 2 EUR (€)	Oct. 01, 2011 Currency, U.S. Dollar Derivative Instrument 3 USD ($)	Oct. 01, 2011 Currency, U.S. Dollar Derivative Instrument 4 USD ($)
Derivative [Line Items]
Forward contracts to sell	£ 15,000,000	£ 14,000,000	£ 1,500,000	€ 3,000,000
Maturity Date	Oct. 04, 2011	Oct. 04, 2011	Dec. 30, 2011	Dec. 30, 2011	Oct. 04, 2011	Oct. 04, 2011	Dec. 30, 2011	Dec. 30, 2011
Forward contracts to purchase					€ 17,172,000	€ 16,037,000	$ 4,270,000	$ 2,376,000