Accumulated Other Comprehensive Loss - Effects on Net Income of Significant Amounts Reclassified from Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 27, 2020	Sep. 29, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales	$ 1,312,314			$ 1,353,931			$ 3,861,095	$ 4,065,357
Cost of sales	(1,055,304)			(1,088,446)			(3,089,512)	(3,254,415)
Income before income taxes	80,710			116,582			264,631	320,310
Provision for income taxes	649			(26,098)			(49,337)	(77,213)
Net income	83,298	$ 54,990	$ 80,236	92,283	$ 81,286	$ 73,768	218,524	247,337
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales	(1,723)			139			(6,245)	988
Cost of sales	75			(337)			2,398	(887)
Net income	(6,548)			(5,201)			(19,283)	(19,860)
Reclassification out of Accumulated Other Comprehensive Income | Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	(1,648)			(198)			(3,847)	101
Provision for income taxes	403			(11)			925	(67)
Net income	(1,245)			(209)			(2,922)	34
Reclassification out of Accumulated Other Comprehensive Income | Defined Benefit Pension Items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	(7,103)			(6,701)			(21,877)	(26,703)
Provision for income taxes	1,800			1,709			5,516	6,809
Net income	(5,303)			(4,992)			(16,361)	(19,894)
Reclassification out of Accumulated Other Comprehensive Income | Effect of curtailment loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-operating pension costs	0			0			(31)	0
Reclassification out of Accumulated Other Comprehensive Income | Effect of settlement loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-operating pension costs	0			(796)			(661)	(2,343)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of defined benefit pension items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-operating pension costs	(7,103)			(5,905)			(21,185)	(24,360)
Reclassification out of Accumulated Other Comprehensive Income | Foreign exchange contracts | Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales	(1,723)			139			(6,245)	988
Cost of sales	867			(348)			3,744	(1,014)
Reclassification out of Accumulated Other Comprehensive Income | Commodity contracts | Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales	0			0			0	0
Cost of sales	$ (792)			$ 11			$ (1,346)	$ 127