Financial Instruments and Risk Management - Additional Information (Details) $ in Thousands	12 Months Ended
Sep. 30, 2023 USD ($) State Location	Sep. 24, 2022 USD ($)
Derivatives, Fair Value [Line Items]
Maximum maturity period of highly liquid investment considered as cash equivalents	3 months
Cash collateral	$ 0	$ 0
Number of locations served by the partnership \| Location	700
Number of states in which the partnership operates \| State	42
Green Bonds Due October 1 2028 through October 1 2033 [Member]
Derivatives, Fair Value [Line Items]
Fair Value of Senior Notes	$ 63,031
Senior Notes [Member] \| 5.0% Senior Notes due June 1, 2031 [Member]
Derivatives, Fair Value [Line Items]
Fair Value of Senior Notes	541,658
Senior Notes [Member] \| 5.875% Senior Notes due March 1, 2027 [Member]
Derivatives, Fair Value [Line Items]
Fair Value of Senior Notes	$ 334,250
Supplier Concentration Risk [Member] \| Propane Purchases [Member]
Derivatives, Fair Value [Line Items]
Minimum concentration risk threshold accounted for by a single customer or supplier (in hundredths)	10.00%
Supplier Concentration Risk [Member] \| Propane Purchases [Member] \| Crestwood Equity Partners L.P [Member]
Derivatives, Fair Value [Line Items]
Concentration percentage of propane supply provided by suppliers (in hundredths)	30.00%
Supplier Concentration Risk [Member] \| Propane Purchases [Member] \| Targa Liquids Marketing [Member]
Derivatives, Fair Value [Line Items]
Concentration percentage of propane supply provided by suppliers (in hundredths)	16.00%
Commodity Contract [Member]
Derivatives, Fair Value [Line Items]
Weighted average maturity of outstanding commodity-related derivatives	6 months	7 months

Maximum maturity period of highly liquid investment considered as cash equivalents.

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- Definition

Minimum concentration threshold accounted for by a single entity or an aggregate of entities expressed as a percentage as of the balance sheet date. The threshold serves as a benchmark which may include, but not limited to, customers, suppliers, geography or any other designation.

+ References

No definition available.

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Number of locations served by the partnership as of the balance sheet date.

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

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- Definition

The number of states the entity operates in as of the balance sheet date.

+ References

No definition available.

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