CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 25, 2016	Sep. 27, 2015	Sep. 25, 2016	Sep. 27, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 114,065	$ 140,347	$ 644,985	$ 710,011
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	3,853	(14,598)	19,174	(37,368)
Derivative financial instruments	(2,031)	(10,533)	(7,374)	(12,747)
Marketable securities	(11)	(99)	(88)	(294)
Pension and postretirement benefit plans	7,572	8,799	22,715	26,395
Total other comprehensive income (loss), net of tax	9,383	(16,431)	34,427	(24,014)
Comprehensive income	$ 123,448	$ 123,916	$ 679,412	$ 685,997