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Financial Instruments and Risk Management (Tables) | 12 Months Ended
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Sep. 27, 2025
Fair Value Disclosures [Abstract] |
Fair value of the Partnership's derivative instruments and their location in the condensed consolidated balance sheets | The following summarizes the fair value of the Partnership’s derivative instruments and their location in the consolidated balance sheets as of September 27, 2025 and September 28, 2024, respectively:
|  | As of September 27, 2025 |  |  | As of September 28, 2024 |
Asset Derivatives |  | Location |  | Fair Value |  |  | Location |  | Fair Value |
Derivatives not designated as hedging instruments: |  |  |  |  |  |  |  |  |  |
Commodity-related derivatives |  | Other current assets |  | $ | 1,504 |  |  | Other current assets |  | $ | 4,122 |
|  | Other assets |  |  | 102 |  |  | Other assets |  |  | 769 |
|  |  |  | $ | 1,606 |  |  |  |  | $ | 4,891 |
Liability Derivatives |  | Location |  | Fair Value |  |  | Location |  | Fair Value |
Derivatives not designated as hedging instruments: |  |  |  |  |  |  |  |  |  |
Commodity-related derivatives |  | Other current liabilities |  | $ | 1,883 |  |  | Other current liabilities |  | $ | 5,744 |
|  | Other liabilities |  |  | 53 |  |  | Other liabilities |  |  | — |
|  |  |  | $ | 1,936 |  |  |  |  | $ | 5,744 |
Reconciliation of the beginning and ending balances of assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs | The following summarizes the reconciliation of the beginning and ending balances of assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs:
|  | Fair Value Measurement Using Significant Unobservable Inputs (Level 3) |
|  | Fiscal 2025 |  |  | Fiscal 2024 |
|  | Assets |  |  | Liabilities |  |  | Assets |  |  | Liabilities |
Beginning balance of over-the-counter options |  | $ | 1,475 |  |  | $ | 193 |  |  | $ | — |  |  | $ | 806 |
Beginning balance realized during the period |  |  | (1,475 | ) |  |  | (193 | ) |  |  | — |  |  |  | (806 | )
Contracts purchased during the period |  |  | 572 |  |  |  | 250 |  |  |  | 1,475 |  |  |  | 193 |
Change in the fair value of outstanding contracts |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Ending balance of over-the-counter options |  | $ | 572 |  |  | $ | 250 |  |  | $ | 1,475 |  |  | $ | 193 |
Effect of the Partnership's derivative instruments on the condensed consolidated statements of operations | The effect of the Partnership’s derivative instruments on the consolidated statements of operations for fiscal 2025, 2024 and 2023 are as follows:
|  | Unrealized Gains (Losses) Recognized in Income |
Derivatives Not Designated as Hedging Instruments |  | Location |  | Amount |
Commodity-related derivatives: |  |  |  |  |
Fiscal 2025 |  | Cost of products sold |  | $ | 2,422 |
Fiscal 2024 |  | Cost of products sold |  | $ | (14,598 | )
Fiscal 2023 |  | Cost of products sold |  | $ | (3,671 | )
Fair value of the Partnership's recognized derivative assets and liabilities on a gross basis and amounts offset on the condensed consolidated balance sheets | The following table presents the fair value of the Partnership’s recognized derivative assets and liabilities on a gross basis and amounts offset on the consolidated balance sheets subject to enforceable master netting arrangements or similar agreements:
|  | As of September 27, 2025 |
|  |  |  |  |  |  |  | Net amounts |
|  |  |  |  |  |  |  | presented in the |
|  | Gross amounts |  |  | Effects of netting |  |  | balance sheet |
Asset Derivatives |  |  |  |  |  |  |  |  |
Commodity-related derivatives |  | $ | 4,213 |  |  | $ | (2,607 | ) |  | $ | 1,606 |
|  | $ | 4,213 |  |  | $ | (2,607 | ) |  | $ | 1,606 |
Liability Derivatives |  |  |  |  |  |  |  |  |
Commodity-related derivatives |  | $ | 4,543 |  |  | $ | (2,607 | ) |  | $ | 1,936 |
|  | $ | 4,543 |  |  | $ | (2,607 | ) |  | $ | 1,936 |
|  | As of September 28, 2024 |
|  |  |  |  |  |  |  | Net amounts |
|  |  |  |  |  |  |  | presented in the |
|  | Gross amounts |  |  | Effects of netting |  |  | balance sheet |
Asset Derivatives |  |  |  |  |  |  |  |  |
Commodity-related derivatives |  | $ | 13,649 |  |  | $ | (8,758 | ) |  | $ | 4,891 |
|  | $ | 13,649 |  |  | $ | (8,758 | ) |  | $ | 4,891 |
Liability Derivatives |  |  |  |  |  |  |  |  |
Commodity-related derivatives |  | $ | 14,502 |  |  | $ | (8,758 | ) |  | $ | 5,744 |
|  | $ | 14,502 |  |  | $ | (8,758 | ) |  | $ | 5,744 |

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