Unit-Based Compensation Arrangements - Summary of Activity In the Restricted Units Plans (Parenthetical) (Details) - shares	12 Months Ended
Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
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	156,540	180,787	171,840

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