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Financial Instruments and Risk Management (Tables) | 3 Months Ended
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Dec. 28, 2024
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 condensed consolidated balance sheets as of December 28, 2024 and September 28, 2024, respectively:
|  | As of December 28, 2024 |  |  | 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 |  | $ | 1,244 |  |  | Other current assets |  | $ | 4,122 |
|  | Other assets |  |  | 32 |  |  | Other assets |  |  | 769 |
|  |  |  | $ | 1,276 |  |  |  |  | $ | 4,891 |
Liability Derivatives |  | Location |  | Fair Value |  |  | Location |  | Fair Value |
Derivatives not designated as hedging instruments: |  |  |  |  |  |  |  |  |  |
Commodity-related derivatives |  | Other current liabilities |  | $ | 582 |  |  | Other current liabilities |  | $ | 5,744 |
|  | Other liabilities |  |  | — |  |  | Other liabilities |  |  | — |
|  |  |  | $ | 582 |  |  |  |  | $ | 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) |
|  | Three Months Ended |  |  | Three Months Ended |
|  | December 28, 2024 |  |  | December 30, 2023 |
|  | Assets |  |  | Liabilities |  |  | Assets |  |  | Liabilities |
Beginning balance of over-the-counter options |  | $ | 1,475 |  |  | $ | 193 |  |  | $ | — |  |  | $ | 806 |
Beginning balance realized during the period |  |  | (390 | ) |  |  | (9 | ) |  |  | — |  |  |  | (613 | )
Contracts purchased during the period |  |  | 255 |  |  |  | — |  |  |  | — |  |  |  | — |
Change in the fair value of outstanding contracts |  |  | (674 | ) |  |  | (155 | ) |  |  | — |  |  |  | 25 |
Ending balance of over-the-counter options |  | $ | 666 |  |  | $ | 29 |  |  | $ | — |  |  | $ | 218 |
Effect of the Partnership's Derivative Instruments on the Condensed Consolidated Statements of Operations | The effect of the Partnership’s derivative instruments on the condensed consolidated statements of operations for the three months ended December 28, 2024 and December 30, 2023 are as follows:
|  | Three Months Ended December 28, 2024 |  |  | Three Months Ended December 30, 2023 |
Derivatives Not Designated as Hedging Instruments |  | Unrealized Gains (Losses) Recognized in Income |  |  | Unrealized Gains (Losses) Recognized in Income |
|  | Location |  | Amount |  |  | Location |  | Amount |
Commodity-related derivatives |  | Cost of products sold |  | $ | 3,634 |  |  | Cost of products sold |  | $ | (10,786 | )
Fair Value of Partnership's Recognized Derivative Assets and Liabilities on a Gross Basis and Amounts Offset on 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 condensed consolidated balance sheets subject to enforceable master netting arrangements or similar agreements:
|  | As of December 28, 2024 |  |  | As of September 28, 2024 |
|  |  |  |  |  |  |  | Net amounts |  |  |  |  |  |  |  |  | Net amounts |
|  |  |  |  |  |  |  | presented in the |  |  |  |  |  |  |  |  | presented in the |
|  | Gross amounts |  |  | Effects of netting |  |  | balance sheet |  |  | Gross amounts |  |  | Effects of netting |  |  | balance sheet |
Asset Derivatives |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity-related derivatives |  | $ | 1,999 |  |  | $ | (723 | ) |  | $ | 1,276 |  |  | $ | 13,649 |  |  | $ | (8,758 | ) |  | $ | 4,891 |
Liability Derivatives |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity-related derivatives |  | $ | 1,305 |  |  | $ | (723 | ) |  | $ | 582 |  |  | $ | 14,502 |  |  | $ | (8,758 | ) |  | $ | 5,744 |
Fair Value of the Partnership's Senior Notes | The fair values of the Senior Notes are based upon quoted market prices (a Level 1 input) and the fair value of the Green Bonds is based upon a valuation model (a Level 3 input). Senior Notes, Revolving Credit Facility and Green Bonds are defined below in Note 10 (“Long-Term Borrowings”) and the fair values of the Senior Notes and Green Bonds are as follows:
|  | As of |
|  | December 28, |  |  | September 28, |
|  | 2024 |  |  | 2024 |
5.875% Senior Notes due March 1, 2027 |  | $ | 347,375 |  |  | $ | 350,056 |
5.00% Senior Notes due June 1, 2031 |  |  | 581,750 |  |  |  | 606,099 |
5.50% Green Bonds due October 1, 2028 through October 1, 2033 |  |  | 68,102 |  |  |  | 72,264 |
|  | $ | 997,227 |  |  | $ | 1,028,419 |

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