Derivatives and Hedging Activities (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Sep. 30, 2012	Oct. 02, 2011
Foreign exchange contracts [Member]
Effective portion of designated cash flow derivative contracts
Amount of gain (loss) recognized in OCI	$ 11,239	$ 21,617	$ (27,681)	$ 21,338
Amount of gain (loss) reclassified from OCI to the Statements of Operations	(11,184)	7,386	(6,399)	11,933
Equity market risk contract [Member]
Effective portion of designated cash flow derivative contracts
Amount of gain (loss) recognized in OCI	0	5,246	0	8,950
Amount of gain (loss) reclassified from OCI to the Statements of Operations	$ 0	$ 0	$ 0	$ 0