Derivative Instruments and Hedging Activities (Details 2) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI		$ (2,030)	$ (859)	$ (3,002)
Gain (Loss) Reclassified from Accumulated OCI into Earnings	1,607	(773)	6,001	1,537
Foreign currency forward contracts
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	12	(590)	121	21
Gain (Loss) Reclassified from Accumulated OCI into Earnings	244	1,077	695	2,325
Commodity futures contracts
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	1,615	(1,145)	3,856	(1,283)
Gain (Loss) Reclassified from Accumulated OCI into Earnings	1,415	(1,523)	5,593	(461)
Commodity option contracts
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	(1,627)	(295)	(4,836)	(1,740)
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(52)	(327)	(287)	(327)
Recognized earnings/(losses) related to mark-to-market accounting	$ (105)	$ 822	$ 16	$ (1,788)