Equity (Deficit) - Paid Distributions (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2023
Limited Partners' Capital Account [Line Items]
General partner distributions	$ 1,000	$ 1,000	$ 1,000
Distributions paid		1,010
Parent
Limited Partners' Capital Account [Line Items]
Distributions paid		0
Limited Partner
Limited Partners' Capital Account [Line Items]
Distributions to Class B unitholders	49,900	99,900
Distributions paid	$ 250,000
Ferrell Companies | Ferrellgas Inc., General Partner
Limited Partners' Capital Account [Line Items]
Distributions paid		1,010
Ferrell Companies | Ferrellgas Partners LP
Limited Partners' Capital Account [Line Items]
Distributions paid		100,000	50,000
Ferrellgas, L.P.
Limited Partners' Capital Account [Line Items]
Distributions paid		101,010	50,000
Ferrellgas, L.P. | Limited Partner
Limited Partners' Capital Account [Line Items]
Distributions paid		100,000	$ 50,000
Ferrellgas, L.P. | General Partner
Limited Partners' Capital Account [Line Items]
Distributions paid		$ 1,010