CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 254,061	$ 228,724	$ 125,449
Other comprehensive income (loss):
Foreign currency translation adjustment and other	14,224	(28,305)	78,084
Pension and other post-retirement benefit plans (Note 12):
Prior service cost and (losses) gains arising during the period	(25,165)	(1,659)	36,593
Amortization of net loss and prior service benefit included in net periodic cost for pension and other post-retirement benefit plans	1,772	2,477	3,344
Comprehensive income, before income taxes	244,892	201,237	243,470
Less: Income tax (benefit) expense related to items of other comprehensive income (Note 10)	(3,633)	(1,892)	7,954
Comprehensive income, net of income taxes	248,525	203,129	235,516
Less: Comprehensive income related to noncontrolling interests, net of income taxes	1,822	1,398	3,128
Comprehensive income attributable to common shareholders, net of income taxes	$ 246,703	$ 201,731	$ 232,388