Accumulated Other Comprehensive Loss - Effects on Net Income of Significant Amounts Reclassified from Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Apr. 01, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales	$ 1,351,705	$ 1,304,187
Cost of sales	(1,081,584)	(1,053,585)
Income before income taxes	95,462	97,034
Provision for income taxes	(22,624)	(23,356)
Net income	73,768	74,925
Effect of settlement loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-operating pension costs	(1,322)
Amortization of defined benefit pension items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-operating pension costs	(8,932)
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales	317	810
Cost of sales	147	(585)
Net income	(7,317)	(6,782)
Reclassification out of Accumulated Other Comprehensive Income | Gains and Losses on Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	464	225
Provision for income taxes	(117)	(45)
Net income	347	180
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	(10,254)	(9,301)
Provision for income taxes	2,590	2,339
Net income	(7,664)	(6,962)
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
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		(9,301)
Reclassification out of Accumulated Other Comprehensive Income | Foreign exchange contracts | Gains and Losses on Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales	317	810
Cost of sales	(288)	(527)
Reclassification out of Accumulated Other Comprehensive Income | Commodity contracts | Gains and Losses on Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales	0	0
Cost of sales	$ 435	$ (58)