Leases - Cash Flow (Details) - USD ($) $ in Thousands	9 Months Ended
	Apr. 30, 2022	Apr. 30, 2021
Operating cash flows, operating leases	$ 13,613	$ 26,454
Operating cash flows, financing leases	2,215	2,571
Financing cash flows, financing leases	4,889	5,282
Ferrellgas, L.P. [Member]
Operating cash flows, operating leases	13,613	26,454
Operating cash flows, financing leases	2,215	2,571
Financing cash flows, financing leases	$ 4,889	$ 5,282