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v3.22.2.2

Acquisitions and Dispositions - Narrative (Details) - USD ($) $ in Millions |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jan. 27, 2022 | Sep. 01, 2021 | Jun. 30, 2020 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020 | Jul. 31, 2020
Business Acquisition [Line Items] |  |  |  |  |  |  |
Purchase accounting adjustments |  |  |  | $ (5) | $ 1 |  |
Investments in equity method investees |  |  |  | $ 47 | $ 65 | $ 0 |
Energy Services | Pennant |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Ownership percent |  |  |  | 47.00% | 47.00% |  |
Energy Services | Pennant |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Percentage of voting interests acquired |  |  |  | 53.00% |  |  |
Investments in equity method investees |  |  |  | $ 61 |  |  |
2021 UGI Corporation Senior Credit Facility |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Proceeds from issuance of debt |  | $ 215 |  |  |  |  |
Sale | HVAC business |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Loss on disposal |  |  |  |  |  | $ 2 |
Ownership | Sale | Conemaugh |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Proportionate ownership share, percent (as a percentage) |  |  |  |  |  |  | 5.97%
Impairment of assets held-for-sale |  |  | $ 52 |  |  |  |
Stonehenge | Energy Services |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Total purchase price | $ 190 |  |  |  |  |  |
Mountaineer |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Total purchase price |  | 540 |  |  |  |  |
Liabilities incurred |  | $ 140 |  |  |  |  |
Purchase accounting adjustments |  |  |  | $ 5 |  |  |
Transaction costs |  |  |  |  | $ 13 |  |

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