Number of persons employed by the Entity

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Number Of Entity Subsidiaries

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

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-Topic 272
-SubTopic 10
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-Paragraph 3
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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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No definition available.

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- Definition

The number of states the entity operates in as of the balance sheet date.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

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-Name Accounting Standards Codification
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-SubTopic 320
-Section S99
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Partnership Organization And Formation (Details) $ in Millions	3 Months Ended
	Oct. 31, 2019 USD ($) employee subsidiary shares	Oct. 31, 2018	Jul. 31, 2019 shares
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Number of subsidiaries \| subsidiary	2
Number of states in which entity operates	50
Number of employees \| employee	0
Ferrellgas Partners LP [Member] \| Fixed Rate 8.625% Due 2020
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Aggregate principal amount \| $	$ 357.0
Ferrellgas Partners LP [Member] \| Ferrellgas, L.P. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Limited partner interest	99.00%
Ferrellgas Partners LP [Member] \| Ferrellgas Partners Finance Corp. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Ownership Percentage	100.00%
Ferrell Companies [Member] \| Ferrellgas Partners LP [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Common stock shares outstanding \| shares	22,800,000
Ferrellgas Inc., General Partner [Member] \| Ferrellgas [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
General partner ownership interest	2.00%	2.00%
Ferrellgas Inc., General Partner [Member] \| Ferrellgas Partners LP [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
General partner ownership interest	1.00%
Ferrellgas Inc., General Partner [Member] \| Ferrellgas, L.P. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
General partner ownership interest	1.0101%	1.0101%
Ferrellgas, L.P. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Number of states in which entity operates	50
Number of employees \| employee	0
Ferrellgas, L.P. [Member] \| Fixed Rate 8.625% Due 2020
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Aggregate principal amount \| $	$ 357.0
Ferrellgas, L.P. [Member] \| Ferrellgas Finance Corp. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Ownership Percentage	100.00%
Ferrellgas Partners Finance Corp. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Common stock shares outstanding \| shares	1,000		1,000
Number of employees \| employee	0
Ferrellgas Partners Finance Corp. [Member] \| Fixed Rate 8.625% Due 2020
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Aggregate principal amount \| $	$ 357.0
Ferrellgas Finance Corp. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Common stock shares outstanding \| shares	1,000		1,000
Number of employees \| employee	0
Ferrellgas Finance Corp. [Member] \| Fixed Rate 8.625% Due 2020
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Aggregate principal amount \| $	$ 357.0