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Financial Instruments and Risk Management - Fair Value of the Partnership's Senior Notes (Details) - USD ($) $ in Thousands | Jun. 28, 2025 | Sep. 28, 2024
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Bank Debt and Senior Notes [Abstract] |  |
Fair value of Senior Notes | $ 1,028,963 | $ 1,028,419
5.875% Senior Notes due March 1, 2027 [Member] |  |
Bank Debt and Senior Notes [Abstract] |  |
Fair value of Senior Notes | 349,899 | 350,056
5.00% Senior Notes due June 1, 2031 [Member] |  |
Bank Debt and Senior Notes [Abstract] |  |
Fair value of Senior Notes | 608,562 | 606,099
5.50% Green Bonds Due October 1, 2028 through October 1, 2033 [Member] |  |
Bank Debt and Senior Notes [Abstract] |  |
Fair value of Senior Notes | $ 70,502 | $ 72,264

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