Leases - Assumptions (Details)	Jul. 31, 2020
Lessee Disclosure [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	5 years 2 months 12 days
Finance Lease, Weighted Average Remaining Lease Term	5 years 10 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	8.20%
Finance Lease, Weighted Average Discount Rate, Percent	8.70%
Ferrellgas, L.P. [Member]
Lessee Disclosure [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	5 years 2 months 12 days
Finance Lease, Weighted Average Remaining Lease Term	5 years 10 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	8.20%
Finance Lease, Weighted Average Discount Rate, Percent	8.70%