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Long-Term Borrowings - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Sep. 28, 2024 | Sep. 30, 2023 | Sep. 24, 2022 | Mar. 15, 2024 | Dec. 28, 2022
Debt Instrument [Line Items] |  |  |  |  |
Ownership interest in Suburban Energy Finance Corp (in hundredths) | 100.00% |  |  |  |
Stated interest rate (in hundredths) |  |  |  |  | 5.50%
Long-term borrowings | $ 1,219,167 | $ 1,198,766 |  |  | $ 80,645
Loss on debt extinguishment | $ 215 | 0 | $ 0 |  |
Consolidated fixed charge coverage ratio, minimum | 1.75 |  |  |  |
Capitalized costs | $ 3,744 |  |  |  |
Long-term debt maturities, 2025 |  | 0 |  |  |
Long-term debt maturities, 2026 | 0 |  |  |  |
Long-term debt maturities, 2027 | 501,000 |  |  |  |
Long-term debt maturities, 2028 | 0 |  |  |  |
Long-term debt maturities, 2029 | 11,707 |  |  |  |
Long-term debt maturities, thereafter | $ 718,938 |  |  |  |
Federal Funds Rate [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Description of applicable interest rate on borrowings | Federal Funds Rate |  |  |  |
Margin over basis rate (in hundredths) | 0.50% |  |  |  |
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Description of applicable interest rate on borrowings | SOFR |  |  |  |
Margin over basis rate (in hundredths) | 1.00% |  |  |  |
Fourth Amended And Restated Credit Agreement [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Deferred debt issuance cost, writeoff | $ 215 |  |  |  |
Amended Revolving Credit Facility Due2025 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Margin over basis rate (in hundredths) | 1.00% |  |  |  |
Weighted average interest rate (in hundredths) | 7.80% |  |  |  |
Amended Revolving Credit Facility Due2025 [Member] | Federal Funds Rate [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Description of applicable interest rate on borrowings | Federal Funds Rate |  |  |  |
Margin over basis rate (in hundredths) | 0.50% |  |  |  |
Revolving Credit Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term borrowings | $ 151,000 | 132,000 |  |  |
Maturity date | Mar. 15, 2029 |  |  |  |
Deferred debt issuance cost, writeoff | $ 215 |  |  |  |
Consolidated interest coverage ratio, minimum | 2.5 |  |  |  |
Total consolidated leverage ratio | 5.75 |  |  |  |
Senior secured unconsolidated leverage ratio maximum | 3.25 |  |  |  |
Standby letters of credit issued under the Revolving Credit Facility | $ 30,887 |  |  |  |
Standby letters of credit issued under the Revolving Credit Facility, expiration date | Apr. 30, 2025 |  |  |  |
Revolving Credit Facility [Member] | Third Amended and Restated Credit [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term borrowings | $ 187,900 |  |  |  |
Revolving Credit Facility [Member] | Fourth Amended And Restated Credit Agreement [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term borrowings | $ 151,000 | 132,000 |  |  |
Maturity date | Mar. 15, 2029 |  |  |  |
Credit Facility, maximum amount |  |  |  | $ 500,000 |
Capitalized debt origination costs | $ 3,237 | $ 903 |  |  |
5.875% Senior Notes due March 1, 2027 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate (in hundredths) | 5.875% | 5.875% |  |  |
Maturity date | Mar. 01, 2027 | Mar. 01, 2027 |  |  |
5.0% Senior Notes due June 1, 2031 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Ownership interest in Suburban Energy Finance Corp (in hundredths) | 100.00% |  |  |  |
Stated interest rate (in hundredths) | 5.00% | 5.00% |  |  |
Date public offering completed | May 24, 2021 |  |  |  |
Percentage of principal amount at which debt was issued (in hundredths) | 100.00% |  |  |  |
Maturity date | Jun. 01, 2031 | Jun. 01, 2031 |  |  |
Aggregate principal amount | $ 650,000 |  |  |  |
Senior Notes Due2024 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate (in hundredths) | 5.50% |  |  |  |
Senior Notes Due2025 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate (in hundredths) | 5.75% |  |  |  |
Senior Notes [Member] | 5.875% Senior Notes due March 1, 2027 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Ownership interest in Suburban Energy Finance Corp (in hundredths) | 100.00% |  |  |  |
Stated interest rate (in hundredths) | 5.875% |  |  |  |
Date public offering completed | Feb. 14, 2017 |  |  |  |
Long-term borrowings | $ 350,000 | $ 350,000 |  |  |
Percentage of principal amount at which debt was issued (in hundredths) | 100.00% |  |  |  |
Maturity date | Mar. 01, 2027 |  |  |  |
Aggregate principal amount | $ 350,000 |  |  |  |
Redemption start date | Mar. 01, 2022 |  |  |  |
Redemption description | The 2027 Senior Notes are redeemable, at the Partnership’s option, in whole or in part, at any time on or after March 1, 2022, in each case at the redemption prices described in the table below, together with any accrued and unpaid interest to the date of the redemption. |  |  |  |
Percentage of the principal amount repurchase offer under change of control provision (in hundredths) | 101.00% |  |  |  |
Repurchase of debt due to decline in rating after consummation of change of control, period | 90 days |  |  |  |
Senior Notes [Member] | 7.375% Senior Notes due August 1, 2021 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate (in hundredths) | 7.375% |  |  |  |
Senior Notes [Member] | 5.0% Senior Notes due June 1, 2031 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term borrowings | $ 650,000 | $ 650,000 |  |  |
Percentage of the principal amount repurchase offer under change of control provision (in hundredths) |  | 101.00% |  |  |
Repurchase of debt due to decline in rating after consummation of change of control, period |  | 90 days |  |  |

X
- Definition The indenture governing the 2020 Senior Notes, requires the Partnership's consolidated fixed charge coverage ratio, as defined, to exceed a minimum ratio to permit the Partnership to make cash distributions equal to available cash, as defined, as of the end of the immediately preceding quarter, if no event of default exists or would exist upon making such distributions. + References No definition available. + Details
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