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Investments in and Acquisitions of Businesses - Additional Information (Details) - USD ($) $ in Thousands				3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 16, 2025	Oct. 14, 2025	Dec. 28, 2022	Sep. 27, 2025	Dec. 28, 2024	Jun. 27, 2026	Jun. 28, 2025	Sep. 27, 2025
Business Acquisition [Line Items]
Cash paid to acquire business						$ 23,133	$ 59,389
Business Combination, Contingent Consideration, Change in Contingent Consideration, Asset, Increase (Decrease)			$ 3,000
Independence Hydrogen, Inc. [Member]
Business Acquisition [Line Items]
Impairment of equity method investment					$ 9,595
Investments Fair Value						$ 21,589
Percentage of equity interest						19.00%
Oberon Fuels Inc [Member]
Business Acquisition [Line Items]
Impairment of equity method investment					$ 10,213
Investments Fair Value						$ 0
Percentage of equity interest						38.00%
RNGProduction[Member]
Business Acquisition [Line Items]
Cash paid to acquire business			190,000
Business Combination, Contingent Consideration, Change in Contingent Consideration, Liability, Increase (Decrease)			$ 6,194					$ 6,194
Investments Fair Value				$ 0				$ 0
Business Combination, Contingent Consideration Arrangements, Basis for Amount			3,000
Development Stage Entity [Member]
Business Acquisition [Line Items]
Impairment of equity method investment				$ 6,095
Investments Fair Value						$ 0
Propane Retailers Headquartered In California [Member]
Business Acquisition [Line Items]
Cash paid to acquire business						13,829
Business acquisition, cost of acquired, cash paid	$ 10,000	$ 14,000
Propane Retailers Headquartered In California [Member] \| Non-compete Agreements [Member]
Business Acquisition [Line Items]
Business acquisition, cost of acquired, cash paid	$ 1,000	$ 500
Propane Retailers Headquartered Another In California [Member]
Business Acquisition [Line Items]
Cash paid to acquire business						$ 9,104