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Financial Instruments and Risk Management - Fair Value of the Partnership's Senior Notes (Parenthetical) (Details) | 6 Months Ended |
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Mar. 28, 2020 | Sep. 28, 2019
5.5% Senior Notes due June 1, 2024 [Member] |  |
Bank Debt and Senior Notes [Abstract] |  |
Stated interest rate (in hundredths) | 5.50% | 5.50%
Maturity date | Jun. 01, 2024 |
5.75% Senior Notes due March 1, 2025 [Member] |  |
Bank Debt and Senior Notes [Abstract] |  |
Stated interest rate (in hundredths) | 5.75% | 5.75%
Maturity date | Mar. 01, 2025 |
5.875% Senior Notes due March 1, 2027 [Member] |  |
Bank Debt and Senior Notes [Abstract] |  |
Stated interest rate (in hundredths) | 5.875% | 5.875%
Maturity date | Mar. 01, 2027 |

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