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Leases - Narrative (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2024
Lessor, Lease, Description [Line Items] |  |
Operating and finance leases not yet commenced |  | $ 0
Renewal term (up to) |  | 9 years
Lease Liability Total | Segment Concentration Risk | AmeriGas Propane |  |
Lessor, Lease, Description [Line Items] |  |
Risk percent |  | 80.00%
AmeriGas OLP |  |
Lessor, Lease, Description [Line Items] |  |
Sale-leaseback transaction term | 6 years |
Cash proceeds | $ 32,000,000 |
Pre tax gain | $ 29,000,000 |
Minimum | Vehicles |  |
Lessor, Lease, Description [Line Items] |  |
Operating lease remaining lease term |  | 1 year
Maximum | Vehicles |  |
Lessor, Lease, Description [Line Items] |  |
Operating lease remaining lease term |  | 10 years

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