Consolidated Statements Of Partners' Deficit - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jan. 31, 2019	Jan. 31, 2019
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance, beginning		$ (1,034,477)
Contributions on connection with non-cash ESOP compensation charges		4,692
Distributions		(10,072)
Net earnings (loss)	$ 43,875	(13,633)
Other comprehensive income (loss)	(17,273)	(29,860)
Partners' capital balance, ending	(1,083,350)	(1,083,350)
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance, beginning		20,510
Contributions on connection with non-cash ESOP compensation charges		0
Distributions		0
Net earnings (loss)		0
Other comprehensive income (loss)		(29,559)
Partners' capital balance, ending	(9,049)	(9,049)
Parent [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance, beginning		(1,027,785)
Contributions on connection with non-cash ESOP compensation charges		4,645
Distributions		(9,814)
Net earnings (loss)		(13,671)
Other comprehensive income (loss)		(29,559)
Partners' capital balance, ending	(1,076,184)	(1,076,184)
Non-Controlling Interest [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance, beginning		(6,692)
Contributions on connection with non-cash ESOP compensation charges		47
Distributions		(258)
Net earnings (loss)	531	38
Other comprehensive income (loss)		(301)
Partners' capital balance, ending	$ (7,166)	$ (7,166)
Common Unitholders [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance (in shares)		97,152,700
Partners' capital balance, beginning		$ (978,503)
Contributions on connection with non-cash ESOP compensation charges		4,599
Distributions		(9,716)
Net earnings (loss)		$ (13,534)
Partners' capital balance (in shares)	97,152,700	97,152,700
Partners' capital balance, ending	$ (997,154)	$ (997,154)
General Partner [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance (in shares)		989,900
Partners' capital balance, beginning		$ (69,792)
Contributions on connection with non-cash ESOP compensation charges		46
Distributions		(98)
Net earnings (loss)		$ (137)
Partners' capital balance (in shares)	989,900	989,900
Partners' capital balance, ending	$ (69,981)	$ (69,981)
Ferrellgas, L.P. [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance, beginning		(680,078)
Contributions on connection with non-cash ESOP compensation charges		4,692
Distributions	(15,553)	(25,568)
Net earnings (loss)	52,617	3,803
Other comprehensive income (loss)	(17,273)	(29,860)
Partners' capital balance, ending	(727,011)	(727,011)
Ferrellgas, L.P. [Member] \| Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance, beginning		20,733
Contributions on connection with non-cash ESOP compensation charges		0
Distributions		0
Net earnings (loss)		0
Other comprehensive income (loss)		(29,860)
Partners' capital balance, ending	(9,127)	(9,127)
Ferrellgas, L.P. [Member] \| Common Unitholders [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance, beginning		(693,896)
Contributions on connection with non-cash ESOP compensation charges		4,645
Distributions		(25,310)
Net earnings (loss)		3,765
Other comprehensive income (loss)		0
Partners' capital balance, ending	(710,796)	(710,796)
Ferrellgas, L.P. [Member] \| General Partner [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance, beginning		(6,915)
Contributions on connection with non-cash ESOP compensation charges		47
Distributions		(258)
Net earnings (loss)		38
Other comprehensive income (loss)		0
Partners' capital balance, ending	$ (7,088)	$ (7,088)

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Total distributions to each class of partners (i.e., general, limited and preferred partners).

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Total change in each class of partners' capital accounts during the year due to unit-based compensation. All partners include general, limited and preferred partners.

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The number of each class of partnership units outstanding at the balance sheet date. Units represent shares of ownership of the general, limited, and preferred partners.

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Amount of partners' capital (deficit), including portions attributable to both the parent and noncontrolling interests. Excludes temporary equity and is sometimes called permanent equity.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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