Derivative Instruments and Hedging Activities (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	$ (2,254)	$ 768	$ (1,699)	$ (964)
Gain (Loss) Reclassified from Accumulated OCI into Earnings	26,668	26,043	45,275	43,481
Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(408)	(315)	(918)	(1,216)
Foreign currency forward contracts
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	(1,492)	626	(1,178)	(241)
Foreign currency forward contracts | Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(173)	(162)	(624)	(270)
Commodity futures contracts
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	(762)	142	(521)	(723)
Commodity futures contracts | Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(235)	(153)	(294)	(946)
Commodity option and future contracts
Effect of derivative instruments on earnings
Recognized earnings (loss) related to mark-to-market accounting	$ 0	$ 92	$ (20)	$ 53