CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2018	Apr. 02, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 56,184	$ 40,170
Other comprehensive income, net of tax:
Foreign currency translation, net of tax of $(5,872) and $(7,089)	81,188	46,982
Pension and other postretirement benefit plans adjustment, net of tax of $(234) and $(532)	881	890
Derivatives qualifying as hedges, net of tax of $(211) and $(555)	621	1,728
Other comprehensive income, net of tax:	82,690	49,600
Comprehensive income	$ 138,874	$ 89,770