Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2021	Mar. 29, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	$ 1,722,785	$ 1,803,999
Total other comprehensive loss, net of tax	13,780	(42,341)
Balance, end of period	1,976,386	1,691,983
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(483,417)	(536,949)
Other comprehensive loss, before reclassifications	(67,811)	(73,993)
Income tax benefit (expense)	10,828	9,633
Net other comprehensive income (loss) before reclassifications	(56,983)	(64,360)
Total reclassifications before tax	91,343	28,509
Income tax expense	(20,580)	(6,490)
Net reclassifications	70,763	22,019
Total other comprehensive loss, net of tax	13,780	(42,341)
Balance, end of period	(469,637)	(579,290)
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(7,589)	(40,813)
Other comprehensive loss, before reclassifications	(17,074)	(35,821)
Income tax benefit (expense)	(264)	1,366
Net other comprehensive income (loss) before reclassifications	(17,338)	(34,455)
Total reclassifications before tax	0	0
Income tax expense	0	0
Net reclassifications	0	0
Total other comprehensive loss, net of tax	(17,338)	(34,455)
Balance, end of period	(24,927)	(75,268)
Derivative financial instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(46,116)	(14,586)
Other comprehensive loss, before reclassifications	(50,737)	(38,172)
Income tax benefit (expense)	11,092	8,267
Net other comprehensive income (loss) before reclassifications	(39,645)	(29,905)
Total reclassifications before tax	73,586	12,881
Income tax expense	(16,411)	(2,821)
Net reclassifications	57,175	10,060
Total other comprehensive loss, net of tax	17,530	(19,845)
Balance, end of period	(28,586)	(34,431)
Pension and postretirement benefit plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(429,712)	(481,550)
Other comprehensive loss, before reclassifications	0	0
Income tax benefit (expense)	0	0
Net other comprehensive income (loss) before reclassifications	0	0
Total reclassifications before tax	17,757	15,628
Income tax expense	(4,169)	(3,669)
Net reclassifications	13,588	11,959
Total other comprehensive loss, net of tax	13,588	11,959
Balance, end of period	(416,124)	(469,591)
Pension and postretirement benefit plans - Prior service credits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax	(893)	(867)
Pension and postretirement benefit plans - Actuarial losses
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax	$ 18,650	$ 16,495