Derivative Instruments and Hedging Activities (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	$ 768	$ 73	$ (964)	$ (120)
Gain (Loss) Reclassified from Accumulated OCI into Earnings	26,043	22,923	43,481	39,208
Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(315)	(41)	(1,216)	241
Foreign currency forward contracts
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	626	94	(241)	222
Foreign currency forward contracts | Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(162)	164	(270)	428
Commodity futures contracts
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	142	(20)	(723)	(307)
Commodity futures contracts | Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(153)	(200)	(946)	(152)
Commodity option contracts
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI		(1)		(35)
Commodity option contracts | Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings		(5)		(35)
Commodity option and future contracts
Effect of derivative instruments on earnings
Recognized earnings (loss) related to mark-to-market accounting	$ 92	$ 53	$ 27	$ 80