Leases - Comparative Information - Exit costs (Details) - USD ($) $ in Thousands	12 Months Ended
Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
Restructuring Cost and Reserve [Line Items]
Business Exit Costs	$ 0	$ 0	$ 11,804
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	$ 11,450	11,804
Accretion		448
Cash payments and other		(802)
Restructuring Reserve, Ending Balance		11,450	11,804
Ferrellgas, L.P. [Member]
Restructuring Cost and Reserve [Line Items]
Business Exit Costs			11,804
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance		11,804
Accretion		448
Cash payments and other		$ (802)
Restructuring Reserve, Ending Balance			$ 11,804

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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