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Contractual interest rate for funds borrowed, under the debt agreement.

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Weighted average interest rate of debt outstanding.

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

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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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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Contingencies and commitments (Details) - USD ($) $ in Millions			12 Months Ended
	Aug. 27, 2026	Oct. 27, 2025	Jul. 31, 2026	Jul. 31, 2025	Mar. 31, 2021	Mar. 30, 2021
Contingencies and commitments
Interest rate (as a percent)			6.70%
Senior Notes 9.250 Percent Due 2031
Contingencies and commitments
Aggregate principal amount		$ 650.0
Interest rate, as a percent		9.25%	9.25%	9.25%
Percentage of offering price at which debt is issued		100.00%
Net proceeds		$ 637.5
Senior Notes 5.375 Percent Due 2026
Contingencies and commitments
Aggregate principal amount		$ 650.0	$ 650.0
Interest rate, as a percent		5.375%	5.375%	5.375%
Senior Notes 5.875 Percent Due 2029
Contingencies and commitments
Aggregate principal amount					$ 825.0
Interest rate, as a percent			5.875%	5.875%	5.875%
Revolving Credit Facility
Contingencies and commitments
Line of credit facility, maximum borrowing capacity		$ 350.0	$ 350.0			$ 308.8
Amount of increase due to accordion feature		50.0
Sublimit, after initial period		300.0
Borrowings under credit facility			87.5
Revolving Credit Facility \| Subsequent Event
Contingencies and commitments
Borrowings under credit facility	$ 20.0
Interest rate (as a percent)	7.00%
Ferrellgas Partners Finance Corp
Contingencies and commitments
Debt securities outstanding			0.0
Ferrellgas Finance Corp \| Senior Notes 9.250 Percent Due 2031
Contingencies and commitments
Aggregate principal amount		$ 650.0
Interest rate, as a percent		9.25%
Percentage of offering price at which debt is issued		100.00%
Net proceeds		$ 637.5
Ferrellgas Finance Corp \| Senior Notes 5.375 Percent Due 2026
Contingencies and commitments
Aggregate principal amount		$ 650.0
Interest rate, as a percent		5.375%
Ferrellgas Finance Corp \| Senior Notes 5.875 Percent Due 2029
Contingencies and commitments
Liability as co-issuer			825.0
Ferrellgas Finance Corp \| Revolving Credit Facility
Contingencies and commitments
Line of credit facility, maximum borrowing capacity		$ 350.0
Amount of increase due to accordion feature		50.0
Sublimit, after initial period		$ 300.0
Borrowings under credit facility			$ 87.5
Interest rate (as a percent)			6.70%
Ferrellgas Finance Corp \| Revolving Credit Facility \| Subsequent Event
Contingencies and commitments
Borrowings under credit facility	$ 20.0
Interest rate (as a percent)	7.00%