Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 25, 2021	Dec. 26, 2020
Right-of-use assets
Finance leases	$ 28,422	$ 14,211
Operating leases	905,527	884,927
Total right-of-use assets	933,949	899,138
Current lease liabilities
Finance leases	2,897	2,149
Operating leases	61,506	60,095
Total current lease liabilities	64,403	62,244
Long-term lease liabilities
Finance leases	24,413	16,726
Operating leases	843,925	818,001
Total long-term lease liabilities	$ 868,338	$ 834,727