CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 398,837	$ 365,306	$ 254,061
Other comprehensive income (loss):
Foreign currency translation adjustment and other	(29,493)	22,345	14,224
Pension and other post-retirement benefit plans (Note 12):
Prior service cost and (losses) gains arising during the period	(1,193)	15,747	(25,165)
Amortization of net loss, settlement losses, and prior service benefit included in total cost for pension and other post-retirement benefit plans	1,678	17,861	1,772
Comprehensive income, before income taxes	369,829	421,259	244,892
Less: Income tax (benefit) expense related to items of other comprehensive income (Note 10)	(3,965)	15,372	(3,633)
Comprehensive income, net of income taxes	373,794	405,887	248,525
Less: Comprehensive income related to noncontrolling interests, net of income taxes	8,678	2,438	1,822
Comprehensive income attributable to common shareholders, net of income taxes	$ 365,116	$ 403,449	$ 246,703