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Income taxes - Cash paid for taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2024
Income taxes
Foreign	$ 347
Cash paid for income taxes, net of refunds received	899	$ 1,300	$ 700
Texas Franchise Tax
Income taxes
State and Local	281
Oregon Corporate Activity Tax
Income taxes
State and Local	183
Other
Income taxes
State and Local	88
Ferrellgas, L.P.
Income taxes
Foreign	347
Cash paid for income taxes, net of refunds received	894	$ 1,300	$ 600
Ferrellgas, L.P. \| Texas Franchise Tax
Income taxes
State and Local	281
Ferrellgas, L.P. \| Oregon Corporate Activity Tax
Income taxes
State and Local	183
Ferrellgas, L.P. \| Other
Income taxes
State and Local	$ 83