Unit-Based Compensation Arrangements - Summary of Activity In the Restricted Units Plans (Parenthetical) (Details) - shares	12 Months Ended
Sep. 30, 2023	Sep. 24, 2022	Sep. 25, 2021
2018 Restricted Unit Plan [Member] \| Executive Officer [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common units withheld for income tax withholding purposes	171,840	138,039	92,336

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details