DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES: OCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 28, 2014	Jun. 30, 2015	Jun. 28, 2014
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	$ 522	$ 1,388	$ (2,515)	$ 555
Gain (Loss) Reclassified from Accumulated OCI into Earnings	11,059	9,026	20,213	18,607
Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(999)	(73)	(1,674)	(510)
Foreign currency forward contracts
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	326	1,505	(1,577)	314
Foreign currency forward contracts | Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(508)	(189)	(1,021)	(451)
Commodity futures contracts
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	196	(117)	(938)	241
Commodity futures contracts | Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(491)	116	(653)	(59)
Commodity option and future contracts
Effect of derivative instruments on earnings
Recognized loss related to mark-to-market accounting for commodity contracts	$ 0	$ 6	$ 0	$ 20