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Financial Instruments and Risk Management - Effect of the Partnership's Derivative Instruments on the Condensed Consolidated Statements of Operations (Details) - Commodity-Related Derivatives [Member] - Derivatives Not Designated as Hedging Instruments [Member] - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 29, 2025
Mar. 30, 2024
Mar. 29, 2025
Mar. 30, 2024
Derivative Instruments Gain Loss [Line Items]        
Unrealized Gains (Losses) Recognized in Income $ 744 $ 5,868 $ 4,378 $ (4,918)
Cost of Products Sold [Member]        
Derivative Instruments Gain Loss [Line Items]        
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Costs and Expenses Costs and Expenses Costs and Expenses Costs and Expenses