Consolidated Statements Of Cash Flows - USD ($)	3 Months Ended						12 Months Ended			36 Months Ended
	Jul. 31, 2019	Oct. 31, 2018	Jul. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Oct. 31, 2016	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2019
Cash flows from operating activities:
Net loss	$ (71,672,000)	$ (57,508,000)	$ (217,797,000)	$ (48,316,000)	$ (56,249,000)	$ (43,471,000)	$ (64,545,000)	$ (256,825,000)	$ (54,501,000)
Reconciliation of net earnings (loss) to net cash provided by operating activities:
Depreciation and amortization expense							78,846,000	101,795,000	103,351,000
Non-cash employee stock ownership plan compensation charge							5,693,000	13,859,000	15,088,000
Non-cash stock and unit-based compensation charge							0	0	3,298,000
Asset impairments							0	10,005,000	0
Loss on asset sales and disposals							10,968,000	187,399,000	14,457,000
Unrealized gain (loss) on derivatives							0	(91,000)	(2,895,000)
Provision for doubtful accounts							1,525,000	1,778,000	7,000
Deferred income tax expense (benefit)							143,000	(3,818,000)	11,000
Exit costs associated with contracts							0	11,804,000	0
Other							12,696,000	9,997,000	7,933,000
Changes in operating assets and liabilities, net of effects from business acquisitions:
Accounts and notes receivable, net of securitization							19,433,000	18,629,000	(5,394,000)
Inventories							3,211,000	(1,231,000)	(1,958,000)
Prepaid expenses and other current assets							(26,508,000)	(3,013,000)	12,041,000
Accounts payable							(13,338,000)	(24,189,000)	17,469,000
Accrued interest expense							(1,738,000)	3,551,000	2,048,000
Other current liabilities							(12,076,000)	7,248,000	12,975,000
Other assets and liabilities							765,000	(2,750,000)	3,358,000
Net cash provided by operating activities							15,075,000	74,148,000	127,288,000
Cash flows from investing activities:
Business acquisitions, net of cash acquired							(13,551,000)	(18,141,000)	(3,539,000)
Capital expenditures							(108,822,000)	(84,919,000)	(50,472,000)
Proceeds from sale of assets							5,699,000	152,587,000	8,510,000
Cash payments to construct assets in connection with future lease transactions							(9,934,000)	0	0
Cash receipts in connection with leased vehicles							862,000	0	0
Other							1,419,000	0	(37,000)
Net cash used in investing activities							(124,327,000)	49,527,000	(45,538,000)
Cash flows from financing activities:
Distributions							(9,814,000)	(39,254,000)	(79,733,000)
Proceeds from issuance of long-term debt							0	323,680,000	230,864,000
Payments on long-term debt							(2,428,000)	(212,920,000)	(174,292,000)
Net additions to (reductions in) short-term borrowings							10,200,000	(51,379,000)	(41,510,000)
Net additions to (reductions in) collateralized short-term borrowings							4,000,000	(11,000,000)	5,000,000
Cash paid for financing costs							(548,000)	(18,535,000)	(6,078,000)
Noncontrolling interest activity							(415,000)	(716,000)	645,000
Repurchase of common units							0	0	(15,851,000)
Net cash used in financing activities							995,000	(10,124,000)	(80,955,000)
Increase (decrease) in cash and cash equivalents							(108,257,000)	113,551,000	795,000
Cash and cash equivalents - beginning of year		119,311,000		5,760,000		4,965,000	119,311,000	5,760,000	4,965,000	$ 4,965,000
Cash and cash equivalents - end of year	11,054,000		119,311,000		5,760,000		11,054,000	119,311,000	5,760,000	11,054,000
Ferrellgas Partners Finance Corp. [Member]
Cash flows from operating activities:
Net loss							(3,999)	(2,115)	(5,308)
Reconciliation of net earnings (loss) to net cash provided by operating activities:
Deferred income tax expense (benefit)										0
Changes in operating assets and liabilities, net of effects from business acquisitions:
Prepaid expenses and other current assets							(8)	(1,850)
Net cash provided by operating activities							(4,007)	(3,965)	(5,308)
Cash flows from financing activities:
Capital contribution							4,007	3,965	5,308
Net cash used in financing activities							4,007	3,965	5,308
Increase (decrease) in cash and cash equivalents							0	0	0
Cash and cash equivalents - beginning of year		1,000		1,000		1,000	1,000	1,000	1,000	1,000
Cash and cash equivalents - end of year	1,000		1,000		1,000		1,000	1,000	1,000	1,000
Ferrellgas, L.P. [Member]
Cash flows from operating activities:
Net loss	(62,874,000)	(48,814,000)	(209,134,000)	(39,699,000)	(47,614,000)	(39,440,000)	(29,517,000)	(222,146,000)	(29,059,000)
Reconciliation of net earnings (loss) to net cash provided by operating activities:
Depreciation and amortization expense							78,846,000	101,795,000	103,351,000
Non-cash employee stock ownership plan compensation charge							5,693,000	13,859,000	15,088,000
Non-cash stock and unit-based compensation charge							0	0	3,298,000
Asset impairments							0	10,005,000	0
Loss on asset sales and disposals							10,968,000	187,399,000	14,457,000
Unrealized gain (loss) on derivatives							0	(91,000)	(2,895,000)
Provision for doubtful accounts							1,525,000	1,778,000	7,000
Deferred income tax expense (benefit)							143,000	(3,818,000)	11,000
Exit costs associated with contracts							0	11,804,000	0
Other							8,505,000	6,266,000	5,921,000
Changes in operating assets and liabilities, net of effects from business acquisitions:
Accounts and notes receivable, net of securitization							19,433,000	18,629,000	(5,394,000)
Inventories							3,211,000	(1,231,000)	(1,958,000)
Prepaid expenses and other current assets							(26,458,000)	(2,942,000)	11,985,000
Accounts payable							(13,338,000)	(24,189,000)	17,469,000
Accrued interest expense							(1,738,000)	3,551,000	120,000
Other current liabilities							(12,076,000)	7,235,000	12,989,000
Other assets and liabilities							765,000	(2,750,000)	3,358,000
Net cash provided by operating activities							45,962,000	105,154,000	148,748,000
Cash flows from investing activities:
Business acquisitions, net of cash acquired							(13,551,000)	(18,141,000)	(3,539,000)
Capital expenditures							(108,822,000)	(84,919,000)	(50,472,000)
Proceeds from sale of assets							5,699,000	152,587,000	8,510,000
Cash payments to construct assets in connection with future lease transactions							(9,934,000)
Cash receipts in connection with leased vehicles							862,000
Other							1,419,000		(37,000)
Net cash used in investing activities							(124,327,000)	49,527,000	(45,538,000)
Cash flows from financing activities:
Distributions							(41,121,000)	(70,962,000)	(119,879,000)
Capital contribution									167,843,000
Proceeds from issuance of long-term debt								323,680,000	62,864,000
Payments on long-term debt							(2,428,000)	(212,920,000)	(174,292,000)
Net additions to (reductions in) short-term borrowings							10,200,000	(51,379,000)	(41,510,000)
Net additions to (reductions in) collateralized short-term borrowings							4,000,000	(11,000,000)	5,000,000
Cash paid for financing costs							(548,000)	(18,493,000)	(2,425,000)
Net changes in advances with consolidated entities							0	0	0
Net cash used in financing activities							(29,897,000)	(41,074,000)	(102,399,000)
Effect of exchange rate changes on cash									0
Increase (decrease) in cash and cash equivalents							(108,262,000)	113,607,000	811,000
Cash and cash equivalents - beginning of year		119,308,000		5,701,000		4,890,000	119,308,000	5,701,000	4,890,000	4,890,000
Cash and cash equivalents - end of year	11,046,000		119,308,000		5,701,000		11,046,000	119,308,000	5,701,000	11,046,000
Ferrellgas Finance Corp. [Member]
Cash flows from operating activities:
Net loss							(5,625)	(5,216)	(5,516)
Reconciliation of net earnings (loss) to net cash provided by operating activities:
Deferred income tax expense (benefit)										0
Changes in operating assets and liabilities, net of effects from business acquisitions:
Prepaid expenses and other current assets							(341)	0	0
Net cash provided by operating activities							(5,966)	(5,216)	(5,516)
Cash flows from financing activities:
Capital contribution							5,966	5,216	5,516
Net cash used in financing activities							5,966	5,216	5,516
Increase (decrease) in cash and cash equivalents							0	0	0
Cash and cash equivalents - beginning of year		$ 1,100		$ 1,100		$ 1,100	1,100	1,100	1,100	1,100
Cash and cash equivalents - end of year	$ 1,100		$ 1,100		$ 1,100		$ 1,100	$ 1,100	$ 1,100	$ 1,100