Derivatives and Hedging Activities (Details 2) (Foreign exchange contracts [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012
Foreign exchange contracts [Member]
Effective portion of designated cash flow derivative contracts
Amount of gain (loss) recognized in OCI	$ (7,263)	$ 30,141	$ (37,893)	$ (38,920)
Amount of gain (loss) reclassified from AOCI to earnings	$ (17,933)	$ (1,529)	$ (19,374)	$ 4,785