CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2020
Revenues:
Revenues	$ 2,114,540,000	$ 1,754,310,000	$ 1,497,826,000
Costs and expenses:
Operating expense - personnel, vehicle, plant and other	520,603,000	465,816,000	493,055,000
Operating expense - equipment lease expense	23,094,000	27,062,000	33,017,000
Depreciation and amortization expense	89,897,000	85,382,000	80,481,000
General and administrative expense	52,780,000	60,065,000	45,752,000
Non-cash employee stock ownership plan compensation charge	3,170,000	3,215,000	2,871,000
Gain (loss) on asset sales and disposals	(6,618,000)	1,831,000	7,924,000
Operating income	245,101,000	216,275,000	148,670,000
Interest expense	(100,093,000)	(173,616,000)	(192,962,000)
Loss on extinguishment of debt	0	(104,834,000)	(37,399,000)
Other income (expense), net	4,833,000	4,246,000	(460,000)
Reorganization expense - professional fees		(10,443,000)
Earnings (loss) before income taxes	149,841,000	(68,372,000)	(82,151,000)
Income tax expense	981,000	741,000	851,000
Net earnings (loss)	148,860,000	(69,113,000)	(83,002,000)
Net earnings (loss) attributable to noncontrolling interest	867,000	(702,000)	(503,000)
Net earnings (loss) attributable to Ferrellgas Partners, L.P.	147,993,000	(68,411,000)	(82,499,000)
Limited partner unitholders' interest in net earnings (loss)	(18,770,000)	(91,751,000)	(81,674,000)
Class A Limited Partner Units
Costs and expenses:
Limited partner unitholders' interest in net earnings (loss)	$ (18,770,000)	$ (91,751,000)	$ (81,674,000)
Basic and diluted net earnings (loss) per limited partner unit	$ (3.86)	$ (18.89)	$ (16.81)
Propane [Member]
Revenues:
Revenues	$ 2,017,879,000	$ 1,668,852,000	$ 1,415,791,000
Costs and expenses:
Cost of sales	1,174,004,000	881,936,000	673,053,000
Other Revenues
Revenues:
Revenues	96,661,000	85,458,000	82,035,000
Costs and expenses:
Cost of sales	12,509,000	12,728,000	13,003,000
Ferrellgas, L.P. [Member]
Revenues:
Revenues	2,114,540,000	1,754,310,000	1,497,826,000
Costs and expenses:
Operating expense - personnel, vehicle, plant and other	520,603,000	465,816,000	493,055,000
Operating expense - equipment lease expense	23,094,000	27,062,000	33,017,000
Depreciation and amortization expense	89,897,000	85,382,000	80,481,000
General and administrative expense	52,767,000	59,676,000	45,636,000
Non-cash employee stock ownership plan compensation charge	3,170,000	3,215,000	2,871,000
Gain (loss) on asset sales and disposals	(6,618,000)	1,831,000	7,924,000
Operating income	245,114,000	216,664,000	148,786,000
Interest expense	(100,093,000)	(159,845,000)	(159,889,000)
Loss on extinguishment of debt		(107,971,000)	(37,399,000)
Other income (expense), net	7,084,000	6,437,000	(460,000)
Earnings (loss) before income taxes	152,105,000	(44,715,000)	(48,962,000)
Income tax expense	976,000	727,000	802,000
Net earnings (loss)	151,129,000	(45,442,000)	(49,764,000)
Ferrellgas, L.P. [Member] | Propane [Member]
Revenues:
Revenues	2,017,879,000	1,668,852,000	1,415,791,000
Costs and expenses:
Cost of sales	1,174,004,000	881,936,000	673,053,000
Ferrellgas, L.P. [Member] | Other Revenues
Revenues:
Revenues	96,661,000	85,458,000	82,035,000
Costs and expenses:
Cost of sales	12,509,000	12,728,000	13,003,000
Ferrellgas Partners Finance Corp. [Member]
Costs and expenses:
General and administrative expense	2,706	2,490	5,827
Net earnings (loss)	(2,706)	(2,490)	(5,827)
Ferrellgas Finance Corp. [Member]
Costs and expenses:
General and administrative expense	2,400	19,941	6,010
Net earnings (loss)	$ (2,400)	$ (19,941)	$ (6,010)