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Financial Instruments and Risk Management - Fair Value of the Partnership's Derivative Instruments and their Location in the Condensed Consolidated Balance Sheets (Details) - USD ($)
$ in Thousands
Sep. 28, 2024
Sep. 30, 2023
Derivatives, Fair Value [Line Items]    
Fair value - assets $ 13,649 $ 35,339
Fair value - liabilities 14,502 24,004
Commodity-Related Derivatives [Member]    
Derivatives, Fair Value [Line Items]    
Fair value - assets 13,649 35,339
Fair value - liabilities 14,502 24,004
Derivatives Not Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Fair value - assets 4,891 18,546
Fair value - liabilities 5,744 7,211
Derivatives Not Designated as Hedging Instruments [Member] | Commodity-Related Derivatives [Member] | Other Current Assets [Member]    
Derivatives, Fair Value [Line Items]    
Fair value - assets 4,122 18,538
Derivatives Not Designated as Hedging Instruments [Member] | Commodity-Related Derivatives [Member] | Other Assets [Member]    
Derivatives, Fair Value [Line Items]    
Fair value - assets 769 8
Derivatives Not Designated as Hedging Instruments [Member] | Commodity-Related Derivatives [Member] | Other Current Liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Fair value - liabilities 5,744 2,427
Derivatives Not Designated as Hedging Instruments [Member] | Commodity-Related Derivatives [Member] | Other Liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Fair value - liabilities $ 0 $ 4,784