Consolidated Statements Of Cash Flows - USD ($)	3 Months Ended
	Oct. 31, 2020	Oct. 31, 2019
Cash flows from operating activities:
Net loss	$ (46,453,000)	$ (45,717,000)
Reconciliation of net loss to net cash provided by operating activities:
Depreciation and amortization expense	21,390,000	19,219,000
Non-cash employee stock ownership plan compensation charge	708,000	795,000
Loss on asset sales and disposals	813,000	2,235,000
Provision for doubtful accounts	678,000	665,000
Deferred income tax expense (benefit)	(1,000)	554,000
Other	2,346,000	3,450,000
Changes in operating assets and liabilities, net of effects from business acquisitions:
Accounts and notes receivable, net of securitization	(18,728,000)	(14,410,000)
Inventories	(6,316,000)	(4,541,000)
Prepaid expenses and other current assets	(334,000)	(8,008,000)
Accounts payable	10,479,000	11,360,000
Accrued interest expense	14,827,000	34,167,000
Other current liabilities	6,154,000	8,214,000
Other assets and liabilities	2,946,000	(872,000)
Net cash provided by operating activities	(11,491,000)	7,111,000
Cash flows from investing activities:
Business acquisitions, net of cash acquired		(6,400,000)
Capital expenditures	(19,454,000)	(18,126,000)
Proceeds from sale of assets	1,407,000	835,000
Cash payments to construct assets in connection with future lease transactions		(16,879,000)
Cash receipts in connection with leased vehicles		5,863,000
Net cash provided by (used in) investing activities	(18,047,000)	(34,707,000)
Cash flows from financing activities:
Payments on long-term debt	(696,000)	(512,000)
Net additions to (reductions in) short-term borrowings		37,000,000
Net additions to (reductions in) collateralized short-term borrowings		11,000,000
Cash paid for financing costs and other	(2,297,000)	(1,102,000)
Noncontrolling interest activity		(1,000)
Cash payments for principal portion of lease liability	(1,703,000)	(38,000)
Net cash provided by (used in) financing activities	(4,696,000)	46,347,000
Increase (decrease) in cash and cash equivalents	(34,234,000)	18,751,000
Cash and cash equivalents - beginning of year	333,761,000	11,054,000
Cash, cash equivalents and restricted cash - end of year	299,527,000	29,805,000
Ferrellgas Partners Finance Corp. [Member]
Cash flows from operating activities:
Net loss	(1,924)	(891)
Changes in operating assets and liabilities, net of effects from business acquisitions:
Prepaid expenses and other current assets	1,850	838
Net cash provided by operating activities	(74)	(53)
Cash flows from financing activities:
Capital contribution	74	53
Net cash provided by (used in) financing activities	74	53
Cash and cash equivalents - beginning of year	1,000	1,000
Cash, cash equivalents and restricted cash - end of year	1,000	1,000
Ferrellgas, L.P. [Member]
Cash flows from operating activities:
Net loss	(38,751,000)	(36,898,000)
Reconciliation of net loss to net cash provided by operating activities:
Depreciation and amortization expense	21,390,000	19,219,000
Non-cash employee stock ownership plan compensation charge	708,000	795,000
Loss on asset sales and disposals	813,000	2,235,000
Provision for doubtful accounts	678,000	665,000
Deferred income tax expense (benefit)	(1,000)	554,000
Other	2,346,000	2,327,000
Changes in operating assets and liabilities, net of effects from business acquisitions:
Accounts and notes receivable, net of securitization	(18,728,000)	(14,410,000)
Inventories	(6,316,000)	(4,541,000)
Prepaid expenses and other current assets	(337,000)	(7,970,000)
Accounts payable	10,479,000	11,360,000
Accrued interest expense	7,129,000	26,469,000
Other current liabilities	6,154,000	8,214,000
Other assets and liabilities	2,946,000	(872,000)
Net cash provided by operating activities	(11,490,000)	7,147,000
Cash flows from investing activities:
Business acquisitions, net of cash acquired		(6,400,000)
Capital expenditures	(19,454,000)	(18,126,000)
Proceeds from sale of assets	1,407,000	835,000
Cash payments to construct assets in connection with future lease transactions		(16,879,000)
Cash receipts in connection with leased vehicles		5,863,000
Net cash provided by (used in) investing activities	(18,047,000)	(34,707,000)
Cash flows from financing activities:
Distributions		(101,000)
Payments on long-term debt	(696,000)	(512,000)
Net additions to (reductions in) short-term borrowings		37,000,000
Net additions to (reductions in) collateralized short-term borrowings		11,000,000
Cash paid for financing costs and other	(2,297,000)	(1,102,000)
Cash payments for principal portion of lease liability	(1,703,000)	(38,000)
Net cash provided by (used in) financing activities	(4,696,000)	46,247,000
Increase (decrease) in cash and cash equivalents	(34,233,000)	18,687,000
Cash and cash equivalents - beginning of year	333,755,000	11,046,000
Cash, cash equivalents and restricted cash - end of year	299,522,000	29,733,000
Ferrellgas Finance Corp. [Member]
Cash flows from operating activities:
Net loss	(1,553)	(1,019)
Changes in operating assets and liabilities, net of effects from business acquisitions:
Prepaid expenses and other current assets	1,500	966
Net cash provided by operating activities	(53)	(53)
Cash flows from financing activities:
Capital contribution	53	53
Net cash provided by (used in) financing activities	53	53
Cash and cash equivalents - beginning of year	1,100	1,100
Cash, cash equivalents and restricted cash - end of year	$ 1,100	$ 1,100