Transactions with related parties (Details) $ in Thousands	12 Months Ended
	Jul. 31, 2025 USD ($) employee	Jul. 31, 2024 USD ($)	Jul. 31, 2023 USD ($)	Jul. 10, 2024 USD ($)
Transactions with related parties
Number of employees | employee	0
Ferrellgas Inc., General Partner
Transactions with related parties
Operating expense	$ 310,002	$ 316,056	$ 310,652
General and administrative expense	46,598	$ 35,386	$ 32,168
Ferrellgas Partners LP
Transactions with related parties
Aggregate principal amount				$ 124,500
Ferrellgas Partners Finance Corp And Ferrellgas, L.P | Letter of Credit
Transactions with related parties
Aggregate principal amount	$ 37,500