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Financial Instruments and Risk Management - Reconciliation of the Beginning and Ending Balances of Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Details) - Fair value input Level 3 - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2023 | Sep. 24, 2022
Reconciliation of beginning and ending balances of assets measured at fair value on recurring basis using significant unobservable inputs [Rollforward] |  |
Beginning balance of over-the-counter options | $ 222 | $ 4,626
Beginning balance realized during the period | (194) | (4,626)
Contracts purchased during the period | 0 | 222
Change in the fair value of outstanding contracts | (28) | 0
Ending balance of over-the-counter options | 0 | 222
Reconciliation of beginning and ending balances of liabilities measured at fair value on recurring basis using significant unobservable inputs [Rollforward] |  |
Beginning balance of over-the-counter options | 3,408 | 451
Beginning balance realized during the period | (2,475) | (219)
Contracts purchased during the period | 0 | 3,295
Change in the fair value of outstanding contracts | (127) | (119)
Ending balance of over-the-counter options | $ 806 | $ 3,408

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