Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Jun. 26, 2021	Dec. 26, 2020
Right-of-use assets
Finance leases	$ 9,576	$ 14,211
Operating leases	906,066	884,927
Total right-of-use assets	915,642	899,138
Current lease liabilities
Finance leases	2,341	2,149
Operating leases	59,999	60,095
Total current lease liabilities	62,340	62,244
Long-term lease liabilities
Finance leases	17,303	16,726
Operating lease liabilities	844,809	818,001
Total long-term lease liabilities	$ 862,112	$ 834,727