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Financial Instruments and Risk Management - Additional Information (Details) $ in Thousands	12 Months Ended
	Sep. 27, 2025 USD ($) Location State	Sep. 28, 2024 USD ($)
Derivatives, Fair Value [Line Items]
Maximum maturity period of highly liquid investment considered as cash equivalents	3 months
Cash collateral	$ 2,813	$ 6,439
Number of locations served by the partnership | Location	750
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	$ 71,090
Senior Notes [Member] | 5.0% Senior Notes due June 1, 2031 [Member]
Derivatives, Fair Value [Line Items]
Fair Value of Senior Notes	617,500
Senior Notes [Member] | 5.875% Senior Notes due March 1, 2027 [Member]
Derivatives, Fair Value [Line Items]
Fair Value of Senior Notes	$ 349,125
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)	12.00%
Commodity Contract [Member]
Derivatives, Fair Value [Line Items]
Weighted average maturity of outstanding commodity-related derivatives	7 months	3 months

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