The number of repayment installments in debt instrument.

No definition available.

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Namespace Prefix:	fgp_
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Balance Type:	na
Period Type:	duration

- Definition

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

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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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+ Details

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Period Type:	duration

- Definition

Amount of the required periodic payments applied to principal.

+ References

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Balance Type:	debit
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- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

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- Definition

Amount of the fee for available but unused credit capacity under the credit facility.

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Balance Type:	debit
Period Type:	duration

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of noncurrent assets that are pledged or subject to withdrawal restrictions, classified as other.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Period Type:

Debt - Security (Details) $ in Millions			12 Months Ended
Debt - Security (Details) $ in Millions	Jun. 16, 2025 USD ($)	Jan. 15, 2025 USD ($) installment	Jul. 31, 2025 USD ($)	Jul. 31, 2024 USD ($)	Jul. 31, 2023 USD ($)	Jul. 10, 2024 USD ($)
Debt
Aggregate principal amount			$ 650.0
Letters of credit outstanding			121.9	$ 193.4
Commitment fees			0.8	$ 1.0	$ 1.3
Ferrellgas Partners LP
Debt
Aggregate principal amount						$ 124.5
Revolving Credit Facility
Debt
Aggregate principal amount			121.9
Aggregate principal amount			10.0
Available borrowing capacity			162.8
Other Restricted Assets, Noncurrent			290.7
Letter of Credit
Debt
Aggregate principal amount		$ 75.0
Number of repayment installments \| installment		2
Periodic payments		$ 37.5
Settlement payment	$ 37.5
Letters of credit outstanding			$ 37.5