CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Apr. 01, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 40,897	$ 56,184
Other comprehensive (loss) income, net of tax:
Foreign currency translation, net of tax of $0 and $(5,872)	(236)	81,188
Pension and other postretirement benefit plans adjustment, net of tax of $(390) and $(234)	1,229	881
Derivatives qualifying as hedges, net of tax of $(1) and $(211)	(597)	621
Other comprehensive income, net of tax:	396	82,690
Comprehensive income	$ 41,293	$ 138,874