Leases - Cash Flow (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Apr. 30, 2020	Apr. 30, 2020
Operating cash flows, operating leases	$ 10,457	$ 32,104
Operating cash flows, financing leases	183	543
Financing cash flows, financing leases	650	944
Ferrellgas, L.P. [Member]
Operating cash flows, operating leases	10,457	32,104
Operating cash flows, financing leases	183	543
Financing cash flows, financing leases	$ 650	$ 944