DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES: OCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 27, 2014	Sep. 30, 2015	Sep. 27, 2014
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	$ (2,022)	$ (2,254)	$ (4,537)	$ (1,699)
Gain (Loss) Reclassified from Accumulated OCI into Earnings	26,171	26,668	46,384	45,275
Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(1,628)	(408)	(3,302)	(918)
Foreign currency forward contracts
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	(1,195)	(1,492)	(2,772)	(1,178)
Foreign currency forward contracts | Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(712)	(173)	(1,733)	(624)
Commodity futures contracts
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	(827)	(762)	(1,765)	(521)
Commodity futures contracts | Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(916)	(235)	(1,569)	(294)
Commodity option and future contracts
Effect of derivative instruments on earnings
Recognized loss related to mark-to-market accounting for commodity contracts	$ 0	$ 0	$ 0	$ 20