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- Definition

Loss Contingency, Remediation Plans, Number Of Decisions

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- Definition

Number Of Fatalities

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- Definition

Number of Subsidiaries Acquired

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- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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- Definition

Amount, before recovery, of expense for known and estimated future costs arising from requirement to perform environmental remediation.

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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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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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Commitments and Contingencies (Details)	9 Months Ended		12 Months Ended
Commitments and Contingencies (Details)	Jun. 30, 2025 USD ($) subsidiary	Jun. 30, 2024 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2017 USD ($) record_of_decision	Mar. 24, 2023 person
Loss Contingencies
Environmental expenditures cap during calendar year	$ 5,000,000
West Reading, Pennsylvania Explosion
Loss Contingencies
Number of fatalities \| person					7
MGP sites in Pennsylvania
Loss Contingencies
Accrual for environmental loss contingencies	$ 53,000,000	$ 53,000,000	$ 54,000,000
Utilities
Loss Contingencies
Number of subsidiaries acquired with similar histories \| subsidiary	2
AmeriGas OLP \| Saranac Lake, New York \| NYDEC RP
Loss Contingencies
Environmental remediation expense, before recovery			$ 19,000,000
AmeriGas OLP \| Saranac Lake, New York \| NYDEC ROD
Loss Contingencies
Accrual for environmental loss contingencies	$ 8,000,000
Loss contingency, number of remediation plans \| record_of_decision				3
Estimated remediation plan cost				$ 28,000,000
UGI International
Loss Contingencies
Severance and other termination of benefit charges		$ 38,000,000