Forward and Option Purchase Contracts Outstanding (Details) In Thousands, unless otherwise specified	9 Months Ended				9 Months Ended			9 Months Ended		9 Months Ended
	Sep. 29, 2012 Currency, British Pound Sterling Derivative Instrument 2 GBP (£)	Sep. 29, 2012 Currency, British Pound Sterling Derivative Instrument 3 GBP (£)	Sep. 29, 2012 Currency, Canadian Dollar	Sep. 29, 2012 Currency, Canadian Dollar Derivative Instrument 3 CAD	Sep. 29, 2012 Currency, Euro	Sep. 29, 2012 Currency, Euro Derivative Instrument 2 EUR (€)	Sep. 29, 2012 Currency, Euro Derivative Instrument 3 EUR (€)	Sep. 29, 2012 Currency, Mexican Peso	Sep. 29, 2012 Currency, Mexican Peso Derivative Instrument 4 MXN	Sep. 29, 2012 Currency, U.S. Dollar Derivative Instrument 1 USD ($)	Sep. 29, 2012 Currency, U.S. Dollar Derivative Instrument 2 USD ($)	Sep. 29, 2012 Currency, U.S. Dollar Derivative Instrument 3 USD ($)	Sep. 29, 2012 Currency, U.S. Dollar Derivative Instrument 4 USD ($)	Sep. 29, 2012 Currency, U.S. Dollar Derivative Instrument 6 [Member] USD ($)	Sep. 29, 2012 Currency, U.S. Dollar Derivative Instrument 5 [Member] [Member] USD ($)	Sep. 29, 2012 Currency, Danish Krones [Member] Derivative Instrument 6 [Member] EUR (€)	Sep. 29, 2012 Currency, Australian Dollar [Member] Derivative Instrument 5 [Member] [Member] EUR (€)
Derivative [Line Items]
Forward contracts to purchase						€ 31,456,000				$ 15,346,000	$ 1,829,000	$ 36,160,000	$ 3,462,000	$ 1,903,000	$ 516,000
Forward contracts to sell	£ 25,000,000	£ 9,500,000		1,800,000			€ 28,000,000		45,000,000							€ 11,000,000	€ 500,000
Maturity	Dec. 28, 2012	Dec. 28, 2012	Dec. 28, 2012		Dec. 28, 2012	Dec. 28, 2012		Dec. 28, 2012		Dec. 28, 2012	Dec. 28, 2012	Dec. 28, 2012	Dec. 28, 2012	Dec. 28, 2012	Dec. 28, 2012	Dec. 28, 2012	Dec. 28, 2012