CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (2,496)	$ 78,003	$ 53,688	$ 118,173
Other comprehensive income, net of tax:
Foreign currency translation, net of tax of $9,378, $(11,392), $3,505, and $(18,481), for the three and six months periods, respectively	(125,705)	65,685	(44,517)	112,667
Pension and other postretirement benefit plans adjustment, net of tax of $(656), $(465), $(890), and $(997) for the three and six month period, respectively	2,015	704	2,896	1,594
Derivatives qualifying as hedges, net of tax of $100, $(615), $(111) and $(1,170) for the three and six month period, respectively	(329)	3,433	292	5,161
Other comprehensive (loss) income, net of tax:	(124,019)	69,822	(41,329)	119,422
Comprehensive (loss) income	$ (126,515)	$ 147,825	$ 12,359	$ 237,595