Acquisitions and dispositions - Acquisitions Funding (Details)	12 Months Ended
	Jul. 31, 2025 USD ($) item	Jul. 31, 2024 USD ($)	Jul. 31, 2023 USD ($) item
Business Combination [Line Items]
Cash payments, net of cash acquired	$ 3,756,000	$ 16,499,000	$ 24,123,000
Business Combination, Series of Individually Immaterial Business Combinations
Business Combination [Line Items]
Cash payments, net of cash acquired	3,756,000	16,499,000	24,123,000
Issuance of liabilities and other costs and considerations	635,000	1,585,000	3,435,000
Aggregate fair value of transactions	4,391,000	$ 18,084,000	$ 27,558,000
Propane and related equipment sales | Business Combination, Series of Individually Immaterial Business Combinations
Business Combination [Line Items]
Measurement period adjustment	$ 200,000
Number of independent distributors	1	1	4
Aggregate fair value of transactions	$ 4,200,000	$ 18,100,000	$ 27,600,000
Ferrellgas, L.P.
Business Combination [Line Items]
Cash payments, net of cash acquired	$ 3,756,000	$ 16,499,000	$ 24,123,000