Income Taxes (Details) - USD ($)	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2020
Income Tax Disclosure [Line Items]
Deferred income tax expense (benefit)	$ 7,000	$ 2,000	$ 554,000
Deferred tax assets (included in Other assets, net)	4,000	5,000
Ferrellgas Partners Finance Corp. [Member]
Income Tax Disclosure [Line Items]
Deferred tax assets, operating loss carryforwards		8,511,000
Net operating loss carryforward		40,529,000
Valuation allowance provided for deferred tax asset	8,511,000
Deferred income tax expense (benefit)	0	0	0
Deferred tax assets (included in Other assets, net)	0	0
Ferrellgas Finance Corp. [Member]
Income Tax Disclosure [Line Items]
Deferred tax assets, operating loss carryforwards		22,045,000
Net operating loss carryforward		104,978,000
Valuation allowance provided for deferred tax asset	22,045,000
Deferred income tax expense (benefit)	0	0	$ 0
Deferred tax assets (included in Other assets, net)	$ 0	$ 0