Forward and Option Purchase Contracts Outstanding (Details) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 27, 2014 Currency, British Pound Sterling Derivative Instrument 1 GBP (£)	Sep. 27, 2014 Currency, British Pound Sterling Derivative Instrument 2 GBP (£)	Sep. 27, 2014 Currency, British Pound Sterling Derivative Instrument 3 GBP (£)	Sep. 27, 2014 Currency, British Pound Sterling Derivative Instrument 10	Sep. 27, 2014 Currency, Euro Derivative Instrument 1 EUR (€)	Sep. 27, 2014 Currency, Euro Derivative Instrument 2 EUR (€)	Sep. 27, 2014 Currency, Euro Derivative Instrument 3 EUR (€)	Sep. 27, 2014 Currency, Euro Derivative Instrument 4 EUR (€)	Sep. 27, 2014 Currency, Euro Derivative Instrument 5 EUR (€)	Sep. 27, 2014 Australia, Dollars Derivative Instrument 7	Sep. 27, 2014 Currency, U.S. Dollar Derivative Instrument 4 USD ($)	Sep. 27, 2014 Currency, U.S. Dollar Derivative Instrument 5 USD ($)	Sep. 27, 2014 Currency, U.S. Dollar Derivative Instrument 6	Sep. 27, 2014 Currency, U.S. Dollar Derivative Instrument 8	Sep. 27, 2014 Currency, U.S. Dollar Derivative Instrument 9	Sep. 27, 2014 Currency, U.S. Dollar Derivative Instrument 11
Derivative [Line Items]
Derivative, Notional Amount	£ 10,000,000	£ 5,000,000	£ 7,600,000		€ 12,763,242	€ 6,375,843	€ 9,708,738	€ 5,500,000	€ 10,000,000		$ 7,013,050	$ 12,747,000
Maturity	Jan. 02, 2015	Jan. 02, 2015	Jan. 02, 2015	Apr. 30, 2014	Jun. 27, 2014	Jun. 27, 2014	Jun. 27, 2014	Jan. 02, 2015	Jan. 02, 2015	Mar. 31, 2014	Jun. 27, 2014	Jun. 27, 2014	Mar. 31, 2014	Apr. 30, 2014	Apr. 30, 2014	May 31, 2014