CONSOLIDATED STATEMENT OF EQUITY (DEFICIT) - USD ($)	Ferrellgas, L.P. [Member] Limited Partner Unitholders Cumulative Effect, Period of Adoption, Adjustment [Member]	Ferrellgas, L.P. [Member] Limited Partner Unitholders	Ferrellgas, L.P. [Member] General Partner [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Ferrellgas, L.P. [Member] General Partner [Member]	Ferrellgas, L.P. [Member] Accumulated Other Comprehensive Income (Loss)	Ferrellgas, L.P. [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Ferrellgas, L.P. [Member]	FERRELLGAS PARTNERS FINANCE CORP. [Member]	Limited Partner Unitholders Class A Limited Partner Units Cumulative Effect, Period of Adoption, Adjustment [Member]	Limited Partner Unitholders Class A Limited Partner Units	Limited Partner Unitholders Class B Limited Partner Units	Limited Partner Unitholders	General Partner [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	General Partner [Member]	Accumulated Other Comprehensive Income (Loss)	Parent [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Parent [Member]	Non-Controlling Interest [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Non-Controlling Interest [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Total
Partners' capital balance (in shares) at Jul. 31, 2019										4,857,600				49,500
Partners' capital balance, beginning at Jul. 31, 2019		$ (758,186,000)		$ (7,570,000)	$ (14,647,000)		$ (780,403,000)		$ (1,347,000)	$ (1,046,245,000)			$ (14,000)	$ (70,476,000)	$ (14,512,000)	$ (1,361,000)	$ (1,131,233,000)	$ (14,000)	$ (7,705,000)	$ (1,375,000)	$ (1,138,938,000)
Increase (Decrease) in Partners' Capital [Roll Forward]
Contributions in connection with non-cash ESOP compensation charges		2,842,000		29,000			2,871,000			2,814,000				28,000			2,842,000		29,000		2,871,000
Distributions		(15,496,000)		(158,000)			(15,654,000)										0		(158,000)		(158,000)
Net earnings (loss)		(49,261,000)		(503,000)			(49,764,000)	$ (5,827)		(81,674,000)				(825,000)			(82,499,000)		(503,000)		(83,002,000)
Other comprehensive income (loss)					12,334,000		12,334,000								12,209,000		12,209,000		125,000		12,334,000
Partners' capital balance, ending at Jul. 31, 2020	$ (1,361,000)	(821,462,000)	$ (14,000)	(8,216,000)	(2,313,000)	$ (1,375,000)	(831,991,000)			$ (1,126,452,000)				$ (71,287,000)	(2,303,000)		(1,200,042,000)		(8,226,000)		(1,208,268,000)
Partners' capital balance (in shares) at Jul. 31, 2020										4,857,600				49,500
Increase (Decrease) in Partners' Capital [Roll Forward]
Contributions in connection with non-cash ESOP compensation charges		3,183,000		32,000			3,215,000			$ 3,150,000				$ 33,000			3,183,000		32,000		3,215,000
Issuance of Class B Units, net of offering costs											$ 383,012,000						383,012,000		0		383,012,000
Issuance of Class B Units (in shares)											1,300,000.0
Net earnings allocated to preferred units		(24,024,000)					(24,024,000)			(23,784,000)				(240,000)			(24,024,000)		0		(24,024,000)
Net earnings (loss)		(44,740,000)		(702,000)			(45,442,000)	(2,490)		(67,727,000)				(684,000)			(68,411,000)		(702,000)		(69,113,000)
Other comprehensive income (loss)					92,099,000		92,099,000								91,169,000		91,169,000		930,000		92,099,000
Partners' capital balance, ending at Jul. 31, 2021		(887,043,000)		(8,886,000)	89,786,000		(806,143,000)			$ (1,214,813,000)	$ 383,012,000			$ (72,178,000)	88,866,000		(815,113,000)		(7,966,000)		(823,079,000)
Partners' capital balance (in shares) at Jul. 31, 2021										4,857,600	1,300,000.0			49,500
Increase (Decrease) in Partners' Capital [Roll Forward]
Contributions in connection with non-cash ESOP compensation charges		3,138,000		32,000			3,170,000			$ 3,107,000				$ 31,000			3,138,000		32,000		3,170,000
Distributions		(119,216,000)					(119,216,000)				$ (99,996,000)	$ (100,000,000.0)					(99,996,000)		0		(99,996,000)
Net earnings allocated to Class B Units										(99,996,000)	99,996,000						0		0
Net earnings allocated to preferred units		(65,287,000)					(65,287,000)			(64,634,000)				(653,000)			(65,287,000)		0		(65,287,000)
Net earnings (loss)		150,262,000		867,000			151,129,000	$ (2,706)		146,513,000				1,480,000			147,993,000		867,000		148,860,000
Other comprehensive income (loss)					(51,479,000)		(51,479,000)								(50,959,000)		(50,959,000)		(520,000)		(51,479,000)
Partners' capital balance, ending at Jul. 31, 2022		$ (918,146,000)		$ (7,987,000)	$ 38,307,000		$ (887,826,000)			$ (1,229,823,000)	$ 383,012,000			$ (71,320,000)	$ 37,907,000		$ (880,224,000)		$ (7,587,000)		$ (887,811,000)
Partners' capital balance (in shares) at Jul. 31, 2022										4,857,600	1,300,000.0			49,500