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Leases and Rental Expense (Narrative) (Details) - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 24, 2022 | Sep. 25, 2021
Operating Leased Assets [Line Items] |  |  |
Initial terms of leases | 20 years |  |
Rent expense for all operating leases | $ 10,600,000 | $ 10,900,000 | $ 11,100,000
Operating sub-lease rental income | 300,000 | 300,000 | 300,000
Finance lease cost | 270,700,000 | 0 | $ 0
Finance lease, amortization expense | 231,300,000 |  |
Finance lease, interest expense | 87,200,000 |  |
Lease extension exercised, increase in operating lease assets and liabilities | $ 7,900,000 |  |
Operating lease weighted average remaining lease term | 12 years 2 months 12 days |  |
Property and equipment | $ 1,431,872,289 | $ 1,374,031,169 |
Current portion of finance lease liabilities | 635,559 |  |
Noncurrent finance lease liabilities | $ 3,059,938 |  |
Operating lease weighted average discount rate | 5.50% |  |
Finance lease weighted average discount rate | 6.00% |  |
New Financing Leases [Member] |  |  |
Operating Leased Assets [Line Items] |  |  |
Property and equipment | $ 3,900,000 |  |
Current portion of finance lease liabilities | 600,000 |  |
Noncurrent finance lease liabilities | $ 3,100,000 |  |

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