Consolidated Statements Of Cash Flows - USD ($)	6 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Cash flows from operating activities:
Net earnings (loss)	$ 3,074,000	$ (13,633,000)
Reconciliation of net earnings (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization expense	39,014,000	38,597,000
Non-cash employee stock ownership plan compensation charge	1,425,000	4,692,000
Loss on asset sales and disposals	4,383,000	6,720,000
Provision for doubtful accounts	974,000	1,576,000
Deferred income tax expense (benefit)	552,000	141,000
Other	7,498,000	6,843,000
Changes in operating assets and liabilities, net of effects from business acquisitions:
Accounts and notes receivable, net of securitization	(68,322,000)	(78,686,000)
Inventories	1,980,000	(6,090,000)
Prepaid expenses and other current assets	(7,039,000)	(16,351,000)
Accounts payable	12,678,000	16,441,000
Accrued interest expense	2,019,000	(260,000)
Other current liabilities	2,095,000	(8,944,000)
Other assets and liabilities	237,000	(6,164,000)
Net cash provided by (used in) operating activities	568,000	(55,118,000)
Cash flows from investing activities:
Business acquisitions, net of cash acquired	(6,400,000)	(5,069,000)
Capital expenditures	(33,422,000)	(58,330,000)
Proceeds from sale of assets	1,659,000	1,960,000
Cash payments to construct assets in connection with future lease transactions	(30,307,000)
Cash receipts in connection with leased vehicles	19,929,000
Net cash used in investing activities	(48,541,000)	(61,439,000)
Cash flows from financing activities:
Distributions		(9,814,000)
Payments on long-term debt	(972,000)	(1,014,000)
Net reductions in short-term borrowings	(3,000,000)	(32,800,000)
Net additions to collateralized short-term borrowings	59,000,000	82,000,000
Cash paid for financing costs and other	(4,245,000)	(221,000)
Noncontrolling interest activity	(158,000)	(258,000)
Net cash provided by financing activities	50,625,000	37,893,000
Increase (decrease) in cash and cash equivalents	2,652,000	(78,664,000)
Cash and cash equivalents - beginning of year	11,054,000	119,311,000
Cash and cash equivalents - end of year	13,706,000	40,647,000
Ferrellgas Partners Finance Corp. [Member]
Cash flows from operating activities:
Net earnings (loss)	(891)	(1,941)
Changes in operating assets and liabilities, net of effects from business acquisitions:
Prepaid expenses and other current assets	838	1,850
Net cash provided by (used in) operating activities	(53)	(91)
Cash flows from financing activities:
Capital contribution	53	91
Net cash provided by financing activities	53	91
Cash and cash equivalents - beginning of year	1,000	1,000
Cash and cash equivalents - end of year	1,000	1,000
Ferrellgas, L.P. [Member]
Cash flows from operating activities:
Net earnings (loss)	20,858,000	3,803,000
Reconciliation of net earnings (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization expense	39,014,000	38,597,000
Non-cash employee stock ownership plan compensation charge	1,425,000	4,692,000
Loss on asset sales and disposals	4,383,000	6,720,000
Provision for doubtful accounts	974,000	1,576,000
Deferred income tax expense (benefit)	552,000	141,000
Other	5,216,000	4,736,000
Changes in operating assets and liabilities, net of effects from business acquisitions:
Accounts and notes receivable, net of securitization	(68,322,000)	(78,686,000)
Inventories	1,980,000	(6,090,000)
Prepaid expenses and other current assets	(7,109,000)	(16,321,000)
Accounts payable	12,678,000	16,441,000
Accrued interest expense	2,019,000	(259,000)
Other current liabilities	2,095,000	(8,944,000)
Other assets and liabilities	237,000	(6,120,000)
Net cash provided by (used in) operating activities	16,000,000	(39,714,000)
Cash flows from investing activities:
Business acquisitions, net of cash acquired	(6,400,000)	(5,069,000)
Capital expenditures	(33,422,000)	(58,330,000)
Proceeds from sale of assets	1,659,000	1,960,000
Cash payments to construct assets in connection with future lease transactions	(30,307,000)
Cash receipts in connection with leased vehicles	19,929,000
Net cash used in investing activities	(48,541,000)	(61,439,000)
Cash flows from financing activities:
Distributions	(15,654,000)	(25,568,000)
Payments on long-term debt	(972,000)	(1,014,000)
Net reductions in short-term borrowings	(3,000,000)	(32,800,000)
Net additions to collateralized short-term borrowings	59,000,000	82,000,000
Cash paid for financing costs and other	(4,236,000)	(221,000)
Net cash provided by financing activities	35,138,000	22,397,000
Increase (decrease) in cash and cash equivalents	2,597,000	(78,756,000)
Cash and cash equivalents - beginning of year	11,046,000	119,308,000
Cash and cash equivalents - end of year	13,643,000	40,552,000
Ferrellgas Finance Corp. [Member]
Cash flows from operating activities:
Net earnings (loss)	(3,906)	(5,400)
Changes in operating assets and liabilities, net of effects from business acquisitions:
Prepaid expenses and other current assets	3	1,500
Net cash provided by (used in) operating activities	(3,903)	(3,900)
Cash flows from financing activities:
Capital contribution	3,903	3,900
Net cash provided by financing activities	3,903	3,900
Cash and cash equivalents - beginning of year	1,100	1,100
Cash and cash equivalents - end of year	$ 1,100	$ 1,100