CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2017	Sep. 25, 2016	Oct. 01, 2017	Sep. 25, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 77,015	$ 66,322	$ 195,188	$ 176,778
Other comprehensive income (loss), net of tax:
Foreign currency translation, net of tax of $(8,429), $(327), $(26,910), and $(2,978) for the three and nine month periods, respectively	43,345	(130)	156,012	11,088
Pension and other postretirement benefit plans adjustment, net of tax of $(479), $(737), $(1,476) $(2,007) for the three and nine month periods, respectively	743	1,430	2,337	3,914
Derivatives qualifying as hedges, net of tax of $141, $(393), $(1,029), and $212 for the three and nine month periods, respectively	(243)	(223)	4,918	761
Other comprehensive income (loss), net of tax:	43,845	1,077	163,267	15,763
Comprehensive income	120,860	67,399	358,455	192,541
Less: comprehensive income attributable to noncontrolling interest	0	24	0	421
Comprehensive income attributable to common shareholders	$ 120,860	$ 67,375	$ 358,455	$ 192,120