Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning balance	$ 1,496,014	$ 1,478,342	$ 927,556
Activity in the period	15,666	(8,899)	(24,461)
Ending balance	1,608,773	1,496,014	1,478,342
Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning balance			(9,795)
Accum. Other Comp. Inc. (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning balance	(106,823)	(97,924)	(63,668)
Activity in the period	15,666	(8,899)	(24,461)
Ending balance	(91,157)	(106,823)	(97,924)
Accum. Other Comp. Inc. (Loss) | Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning balance			(9,795)
Pension and postretirement liability and reclassification adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning balance	(18,046)	(9,959)	(10,836)
Activity in the period	(16,095)	(8,087)	877
Ending balance	(34,141)	(18,046)	(9,959)
Pension and postretirement liability and reclassification adjustments | Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning balance			0
Gain (loss) on investments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning balance	0	0	9,795
Activity in the period	0	0	0
Ending balance	0	0	0
Gain (loss) on investments | Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning balance			(9,795)
Foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning balance	(88,777)	(87,965)	(62,627)
Activity in the period	31,761	(812)	(25,338)
Ending balance	$ (57,016)	$ (88,777)	(87,965)
Foreign currency translation adjustments | Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning balance			$ 0