Other Comprehensive Earnings (Loss) - Schedule of Accumulated Other Comprehensive Earnings (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the period			$ (184,220)	$ (294,514)
Current period other comprehensive earnings (loss)	$ 27,798	$ (12,201)	(96,110)	109,138
Balance at the end of the period	(280,330)	(185,376)	(280,330)	(185,376)
Pension and Postretirement Amounts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the period			(36,129)	(143,134)
Current period other comprehensive earnings (loss)			824	111,019
Balance at the end of the period	(35,305)	(32,115)	(35,305)	(32,115)
Gains (Losses) on Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the period			(5,232)	1,549
Current period other comprehensive earnings (loss)			(105)	3,839
Balance at the end of the period	(5,337)	5,388	(5,337)	5,388
Unrealized Holding Gains (Losses) on Available- for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the period			(230)	(744)
Current period other comprehensive earnings (loss)			1,315	400
Balance at the end of the period	1,085	(344)	1,085	(344)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the period			(142,629)	(152,185)
Current period other comprehensive earnings (loss)			(98,144)	(6,120)
Balance at the end of the period	$ (240,773)	$ (158,305)	$ (240,773)	$ (158,305)