Leases - Cash Flow (Details) $ in Thousands	3 Months Ended
	Oct. 31, 2019 USD ($)
Operating cash flows, operating leases	$ 11,049
Operating cash flows, financing leases	42
Financing cash flows, financing leases	28
Ferrellgas, L.P. [Member]
Operating cash flows, operating leases	11,049
Operating cash flows, financing leases	42
Financing cash flows, financing leases	$ 28