CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 120,218	$ 86,563	$ 97,696	$ 410,139
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	12,737	(15,321)	(275)	(3,720)
Derivative financial instruments	(2,101)	6,284	(28,255)	(6,080)
Pension and postretirement benefit plans	11,959	7,744	35,876	23,230
Total other comprehensive loss, net of tax	22,595	(1,293)	7,346	13,430
Comprehensive income	$ 142,813	$ 85,270	$ 105,042	$ 423,569