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Number Of Entity Subsidiaries

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

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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

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

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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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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Carrying amount, attributable to parent, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.

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Partnership Organization And Formation (Details)		12 Months Ended
Partnership Organization And Formation (Details)	Mar. 30, 2021 USD ($)	Jul. 31, 2022 USD ($) employee state subsidiary shares	Jul. 31, 2021 USD ($) shares	Jul. 31, 2020 USD ($)
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Number of subsidiaries \| subsidiary		2
Senior preferred units, units outstanding \| shares		700,000	700,000
Preferred Units aggregate initial liquidation preference		$ 700,000,000.0
Senior preferred units, carrying amount		651,349,000	$ 651,349,000
Proceeds from issuance of long-term debt		$ 0	$ 1,475,000,000	$ 703,750,000
Number of employees \| employee		0
Revolving Credit Facility [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Debt Instrument, Term	4 years
Line of Credit Facility, Maximum Borrowing Capacity	$ 350,000,000.0
Sublimit, after initial period	$ 200,000,000.0
Ferrellgas Partners LP [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
General partner ownership interest		2.00%	2.00%
Ferrellgas, L.P. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Number of states in which entity operates \| state		50
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] \| Class A Limited Partner Units
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Ownership percentage		23.40%
Ferrellgas Inc., General Partner [Member] \| Ferrellgas [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
General partner ownership interest		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]
Senior preferred units, units outstanding \| shares		700,000	700,000
Senior preferred units, carrying amount		$ 651,349,000	$ 651,349,000
Proceeds from issuance of long-term debt			$ 1,475,000,000	$ 703,750,000
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
Corporation formation proceeds from partnership		$ 1,000
Corporation formation shares granted to partnership \| shares		1,000
Number of employees \| employee		0
Ferrellgas Finance Corp. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Common stock shares outstanding \| shares		1,000	1,000
Corporation formation proceeds from partnership		$ 1,000
Corporation formation shares granted to partnership \| shares		1,000
Number of employees \| employee		0
Ferrellgas Employee Stock Ownership Trust [Member] \| Ferrell Companies [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Ownership percentage		100.00%