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Income Taxes (Details) - USD ($) | 12 Months Ended
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Dec. 26, 2020 | Dec. 28, 2019 | Dec. 29, 2018
Income Tax Disclosure [Abstract] |  |  |
Tax Credit Carryforward, Amount | $ 8,600,000 | $ 6,200,000 |
Deferred Tax Assets, Valuation Allowance | 0 |  |
Current tax expense |  |  |
Federal | 211,228,000 | 128,490,000 | $ 123,388,000
State | 38,511,000 | 25,091,000 | 15,597,000
Total current | 249,739,000 | 153,581,000 | 138,985,000
Deferred tax expense (benefit) |  |  |
Deferred Federal Income Tax Expense (Benefit) | (21,997,000) | 11,770,000 | 9,650,000
Deferred State and Local Income Tax Expense (Benefit) | (8,553,000) | (4,328,000) | 2,393,000
Deferred income tax expense (benefit), net of tax expense of interest rate swap | (30,550,000) | 7,442,000 | 12,043,000
Total income tax expense | 219,189,000 | 161,023,000 | 151,028,000
Tax assets |  |  |
Inventory valuation | 20,539,000 | 16,676,000 |
Accrued employee benefits costs | 44,625,000 | 12,002,000 |
Accrued sales tax audit reserve | 5,967,000 | 4,173,000 |
Deferred Tax Assets Long Term, Tax Effect of Finance Lease Liabilities | 8,595,000 | 6,817,000 |
Deferred Tax Assets Long Term, Tax Effect of Operating Lease Liabilities | 645,719,000 | 581,593,000 |
Deferred compensation | 12,289,000 | 14,836,000 |
Workers’ compensation insurance | 11,804,000 | 10,154,000 |
General liability insurance | 7,346,000 | 6,025,000 |
Lease exit obligations | 2,315,000 | 2,087,000 |
Income tax credits | 8,744,000 | 6,377,000 |
Deferred Tax Assets Long Term, Tax Effect of Amortization | 7,269,000 | 0 |
Other | 8,431,000 | 5,768,000 |
Total non current deferred tax asset | 783,643,000 | 666,508,000 |
Tax liabilities |  |  |
Deferred Tax Liabilities, Finance Lease Assets | (7,584,000) | (5,684,000) |
Deferred Tax Liabilities, Operating Lease Right-of-Use Assets | (612,658,000) | (551,751,000) |
Inventory basis differences | (4,768,000) | (4,667,000) |
Prepaid Expenses | (2,491,000) | (2,024,000) |
Depreciation | (124,280,000) | (93,919,000) |
Amortization | 0 | (8,230,000) |
Other | (276,000) | (386,000) |
Net deferred tax asset |  | (153,000) |
Provision for income tax reconciliation to amounts computed at the federal statutory rate |  |  |
Tax provision at statutory rate | 203,311,000 | 151,909,000 | 143,511,000
State income taxes, net of federal tax benefits | 27,642,000 | 19,722,000 | 18,019,000
Tax Adjustments, Settlements, and Unusual Provisions | 5,080,000 | 2,572,000 | 2,581,000
Tax credits, net of federal tax benefits | (8,828,000) | (7,768,000) | (7,140,000)
Share-based compensation programs | (9,303,000) | (4,484,000) | (4,522,000)
Other | 1,287,000 | 928,000 | 1,421,000
Total income tax expense | 219,189,000 | 161,023,000 | 151,028,000
Unrecognized tax benefits that would Impact effective tax rate | 2,700,000 |  |
Reconciliation of gross unrecognized tax benefits |  |  |
Balance at beginning of period | 2,760,000 | 2,451,000 | 1,993,000
Additions based on tax positions related to the current year | 816,000 | 650,000 | 621,000
Additions for tax positions of prior years | 32,000 | 59,000 | 257,000
Reductions for tax positions of prior years | (372,000) | (400,000) | (420,000)
Balance at end of year | 3,236,000 | 2,760,000 | $ 2,451,000
Deferred Tax Liabilities, Net | 31,586,000 |  |
Deferred Tax Liabilities, Net, Noncurrent | 752,057,000 | $ 666,661,000 |
Social Security Tax Deferral | $ 47,000,000.0 |  |

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