Derivative Instruments and Hedging Activities (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	$ 1,388	$ (802)	$ 555	$ (1,732)
Gain (Loss) Reclassified from Accumulated OCI into Earnings	9,026	8,369	18,607	17,438
Reclassification out of Accumulated Other Comprehensive Income [Member]
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(73)	(546)	(510)	(901)
Foreign Exchange Forward [Member]
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	1,505	(585)	314	(867)
Foreign Exchange Forward [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(189)	(73)	(451)	(108)
Commodity Futures [Member]
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	(117)	(217)	241	(865)
Commodity Futures [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	116	(473)	(59)	(793)
Commodity Option and Future Contracts [Member]
Effect of derivative instruments on earnings
Recognized earnings (loss) related to mark-to-market accounting	$ (6)	$ (31)	$ (20)	$ (39)