Equity (Deficit) - Contributions and AOCI (Details) - USD ($)	3 Months Ended
Oct. 31, 2023	Oct. 31, 2022
Capital Unit [Line Items]
Contributions in connection with non-cash ESOP compensation charges	$ 720,000	$ 723,000
Ferrellgas Partners LP
Capital Unit [Line Items]
General partner ownership interest	2.00%	2.00%
General Partner
Capital Unit [Line Items]
Non-cash contribution	$ 14,000.0	$ 14,000.0
Contributions in connection with non-cash ESOP compensation charges	7,000	7,000
Ferrellgas, L.P
Capital Unit [Line Items]
Contributions in connection with non-cash ESOP compensation charges	720,000	723,000
Ferrellgas, L.P \| General Partner
Capital Unit [Line Items]
Contributions in connection with non-cash ESOP compensation charges	$ 7,000.0	$ 7,000.0
Ferrellgas Inc., General Partner \| Ferrellgas, L.P
Capital Unit [Line Items]
General partner ownership interest	1.0101%	1.0101%
Ferrellgas Inc., General Partner \| Ferrellgas Partners LP
Capital Unit [Line Items]
General partner ownership interest	1.00%

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
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Total contributions made by each class of partners (i.e., general, limited and preferred partners).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
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-Publisher FASB
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Amount of increase (decrease) in partners' capital account for unit-based payment arrangement issued by partnership. Partner includes, but is not limited to, general, limited and preferred partners.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
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-Section S99
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-Subparagraph (SX 210.3-04)
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