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Employee Benefit Plans - Schedule of Measurement of Partnership's Pension Plan Assets by Category (Details) - Pension Benefits [Member] - USD ($)
$ in Thousands
Sep. 27, 2025
Sep. 28, 2024
Sep. 30, 2023
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items]      
Fair value of plan assets $ 48,175 [1],[2] $ 52,758 [1],[2] $ 51,340
Short-term investments [Member]      
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items]      
Fair value of plan assets [1] 1,504 1,466  
Domestic equity securities [Member]      
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items]      
Fair value of plan assets [1],[3] 4,480 2,855  
International equity securities [Member]      
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items]      
Fair value of plan assets [1],[3] 2,603 4,975  
Fixed income securities [Member]      
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items]      
Fair value of plan assets [1],[2] $ 39,588 $ 43,462  
[1] Includes funds which are not publicly traded and are valued at the net asset value of the units provided by the fund issuer.
[2] Includes funds which invest primarily in publicly traded and non-publicly traded, investment grade corporate bonds, U.S. government bonds and asset-backed securities.
[3] Includes funds which invest primarily in a diversified portfolio of publicly traded U.S. and Non-U.S. common stock.