Quarterly distribution of available cash (Details) $ in Millions	12 Months Ended
	Jul. 31, 2025 USD ($) item	Jul. 31, 2024	Mar. 31, 2021 USD ($)	Mar. 30, 2021 USD ($)
Earnings Distribution Allocation [Line Items]
Cash reserve for distributions, number of quarters provided | item	4
Maximum days after end of quarter to make distributions	45 days
Aggregate principal amount	$ 650.0
Senior Notes 5.375 Percent Due 2026
Earnings Distribution Allocation [Line Items]
Aggregate principal amount			$ 650.0
Interest rate, as a percent	5.375%	5.375%	5.375%
Senior Notes 5.875 Percent Due 2029
Earnings Distribution Allocation [Line Items]
Aggregate principal amount			$ 825.0
Interest rate, as a percent	5.875%	5.875%	5.875%
Revolving Credit Facility [Member]
Earnings Distribution Allocation [Line Items]
Aggregate principal amount	$ 10.0
Ferrellgas, L.P.
Earnings Distribution Allocation [Line Items]
Cash reserve for distributions, number of quarters provided | item	4
Maximum days after end of quarter to make distributions	45 days
Cash distributions to Ferrellgas Partners	99.00%
Cash distributions to general partner	1.00%
Ferrellgas, L.P. | Senior Notes 5.375 Percent Due 2026
Earnings Distribution Allocation [Line Items]
Aggregate principal amount				$ 650.0
Interest rate, as a percent				5.375%
Ferrellgas, L.P. | Senior Notes 5.875 Percent Due 2029
Earnings Distribution Allocation [Line Items]
Aggregate principal amount				$ 825.0
Interest rate, as a percent				5.875%