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Other Retirement Plans - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 24, 2023 | Sep. 25, 2022 | Sep. 26, 2021
Multiemployer Plan [Line Items] |  |  |
Defined contribution retirement plan costs | $ 3.5 | $ 3.6 | $ 3.4
Percentage of CBA's expiring in the next twelve months | 55.00% |  |
Minimum |  |  |
Multiemployer Plan [Line Items] |  |  |
Multiemployer plans, withdrawal obligation, period (year) | 20 years |  |
Warrants and Other Liabilities |  |  |
Multiemployer Plan [Line Items] |  |  |
Withdrawal liabilities | $ 25.1 | $ 25.0 |

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