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Disaggregation of Revenue - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Disaggregation Of Revenue [Line Items]
Contract with customer, liability revenue recognized	$ 87,056	$ 84,687	$ 64,508
Contract assets	$ 5,806	$ 3,901
Propane [Member]
Disaggregation Of Revenue [Line Items]
Segment reporting, percentage of revenue	88.00%	88.00%	88.00%
Fuel Oil and Refined Fuels [Member]
Disaggregation Of Revenue [Line Items]
Segment reporting, percentage of revenue	5.00%	5.00%	5.00%
Natural Gas and Electricity [Member]
Disaggregation Of Revenue [Line Items]
Segment reporting, percentage of revenue	2.00%	2.00%	2.00%

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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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.

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