Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 26, 2021	Jun. 27, 2021	Mar. 28, 2021	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Sep. 26, 2021	Sep. 27, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	$ 2,184,272	$ 1,976,386	$ 1,722,785	$ 1,623,705	$ 1,691,983	$ 1,803,999	$ 1,722,785	$ 1,803,999
Total other comprehensive loss, net of tax	22	14,500	13,780	22,595	27,092	(42,341)	28,302	7,346
Balance, end of period	2,333,894	2,184,272	1,976,386	1,769,898	1,623,705	1,691,983	2,333,894	1,769,898
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(455,137)	(469,637)	(483,417)	(552,198)	(579,290)	(536,949)	(483,417)	(536,949)
Other comprehensive loss, before reclassifications	(49,994)			69,063			(102,509)	47,455
Income tax benefit (expense)	7,388			(12,893)			14,915	(10,559)
Net other comprehensive income (loss) before reclassifications	(42,606)			56,170			(87,594)	36,896
Total reclassifications before tax	54,923			(42,957)			150,125	(37,411)
Income tax benefit (expense)	(12,295)			9,382			(34,229)	7,861
Net reclassifications	42,628			(33,575)			115,896	(29,550)
Total other comprehensive loss, net of tax	22	14,500	13,780	22,595	27,092	(42,341)	28,302	7,346
Balance, end of period	(455,115)	(455,137)	(469,637)	(529,603)	(552,198)	(579,290)	(455,115)	(529,603)
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(23,512)		(7,589)	(53,825)		(40,813)	(7,589)	(40,813)
Other comprehensive loss, before reclassifications	(18,296)			13,331			(33,648)	(434)
Income tax benefit (expense)	460			(594)			(111)	159
Net other comprehensive income (loss) before reclassifications	(17,836)			12,737			(33,759)	(275)
Total reclassifications before tax	0			0			0	0
Income tax benefit (expense)	0			0			0	0
Net reclassifications	0			0			0	0
Total other comprehensive loss, net of tax	(17,836)			12,737			(33,759)	(275)
Balance, end of period	(41,348)	(23,512)		(41,088)	(53,825)		(41,348)	(41,088)
Derivative financial instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(29,088)		(46,116)	(40,740)		(14,586)	(46,116)	(14,586)
Other comprehensive loss, before reclassifications	(31,698)			55,732			(68,861)	47,889
Income tax benefit (expense)	6,928			(12,299)			15,026	(10,718)
Net other comprehensive income (loss) before reclassifications	(24,770)			43,433			(53,835)	37,171
Total reclassifications before tax	37,166			(58,585)			96,854	(84,295)
Income tax benefit (expense)	(8,126)			13,051			(21,721)	18,869
Net reclassifications	29,040			(45,534)			75,133	(65,426)
Total other comprehensive loss, net of tax	4,270			(2,101)			21,298	(28,255)
Balance, end of period	(24,818)	(29,088)		(42,841)	(40,740)		(24,818)	(42,841)
Pension and postretirement benefit plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(402,537)		$ (429,712)	(457,633)		$ (481,550)	(429,712)	(481,550)
Other comprehensive loss, before reclassifications	0			0			0	0
Income tax benefit (expense)	0			0			0	0
Net other comprehensive income (loss) before reclassifications	0			0			0	0
Total reclassifications before tax	17,757			15,628			53,271	46,884
Income tax benefit (expense)	(4,169)			(3,669)			(12,508)	(11,008)
Net reclassifications	13,588			11,959			40,763	35,876
Total other comprehensive loss, net of tax	13,588			11,959			40,763	35,876
Balance, end of period	(388,949)	$ (402,537)		(445,674)	$ (457,633)		(388,949)	(445,674)
Pension and postretirement benefit plans - Prior service credits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax	(893)			(867)			(2,679)	(2,601)
Pension and postretirement benefit plans - Actuarial losses
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax	$ 18,650			$ 16,495			$ 55,950	$ 49,485