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v3.22.2.2

Income Taxes - Narrative (Details) - USD ($) | 2 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 21, 2022 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020
Income Tax Examination [Line Items] |  |  |  |
Foreign tax credits |  | $ 5,000,000 | $ 0 | $ 0
Foreign tax credit carryforwards |  | 76,000,000 | 79,000,000 |
Net operating loss carryback |  |  | 15,000,000 | 32,000,000
Income taxes receivable |  | 128,000,000 | 128,000,000 |
GILTI taxes |  | 3,000,000 | 8,000,000 | 0
Deferred tax assets relating to operating loss carryforwards |  | 48,000,000 | 53,000,000 |
Increase (decrease) in valuation allowance |  | 3,000,000 | 33,000,000 |
Unrecognized tax benefits if recognized would impact the reported effective tax rate |  | 4,000,000 | 4,000,000 | 4,000,000
Future capital losses from PennEast and Hudson investments |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Increase (decrease) in valuation allowance |  |  | 30,000,000 |
State Tax Rate Changes |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Increase (decrease) in valuation allowance |  | 4,000,000 |  |
Future FTC's realizable |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Increase (decrease) in valuation allowance |  | 6,000,000 | 10,000,000 |
Notional interest deduction carryover |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Increase (decrease) in valuation allowance |  | 17,000,000 | 10,000,000 |
Foreign Net Operating Loss Carry Forwards |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Increase (decrease) in valuation allowance |  | 4,000,000 |  |
AmeriGas Propane |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Operating loss carryforwards |  | 6,000,000 |  |
Other Subsidiaries |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Deferred tax assets relating to operating loss carryforwards |  | 48,000,000 |  |
Fiscal 2020 carryback to Fiscal 2015 |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Income taxes receivable |  | 90,000,000 | 37,000,000 | 90,000,000
Fiscal 2020 carryback to Fiscal 2015 | Subsequent Event |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Income tax refunds | $ 75,000,000 |  |  |
Foreign | Flaga |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Operating loss carryforwards |  | 5,000,000 |  |
Foreign | UGI France |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Operating loss carryforwards |  | 30,000,000 |  |
Foreign | Italy |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Foreign tax credit carryforwards |  |  | 23,000,000 |
Foreign | Netherlands |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Operating loss carryforwards |  | 10,000,000 |  |
Effects of tax rate changes – State, net of federal benefit |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Benefit from legislation |  | 20,000,000 |  |
Decrease in income tax expense due to state tax flow through of accelerated depreciation |  | 10,000,000 | $ 9,000,000 | $ 11,000,000
Operating loss carryforwards |  | 787,000,000 |  |
Domestic | Mountaintop Energy Holding, LLC |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Operating loss carryforwards |  | $ 16,000,000 |  |

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