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Asset Retirement Obligations (Tables) | 9 Months Ended
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Sep. 30, 2023
Asset Retirement Obligation [Line Items] |
Asset Retirement Obligation Roll Forward | The changes in the carrying amounts of AROs were as follows.
| PPL |  | LG&E |  | KU
Balance at December 31, 2022 | $ | 177 |  |  | $ | 86 |  |  | $ | 82 |
Accretion | 6 |  |  | 3 |  |  | 3 |
New obligations incurred | 2 |  |  | 1 |  |  | 1 |
Changes in estimated cash flow or settlement date | 14 |  |  | 11 |  |  | 5 |
Obligations settled | (26) |  |  | (9) |  |  | (17) |
Other | (5) |  |  | (6) |  |  | — |
Balance at September 30, 2023 | $ | 168 |  |  | $ | 86 |  |  | $ | 74 |
Louisville Gas And Electric Co [Member] |
Asset Retirement Obligation [Line Items] |
Asset Retirement Obligation Roll Forward | The changes in the carrying amounts of AROs were as follows.
| PPL |  | LG&E |  | KU
Balance at December 31, 2022 | $ | 177 |  |  | $ | 86 |  |  | $ | 82 |
Accretion | 6 |  |  | 3 |  |  | 3 |
New obligations incurred | 2 |  |  | 1 |  |  | 1 |
Changes in estimated cash flow or settlement date | 14 |  |  | 11 |  |  | 5 |
Obligations settled | (26) |  |  | (9) |  |  | (17) |
Other | (5) |  |  | (6) |  |  | — |
Balance at September 30, 2023 | $ | 168 |  |  | $ | 86 |  |  | $ | 74 |
Kentucky Utilities Co [Member] |
Asset Retirement Obligation [Line Items] |
Asset Retirement Obligation Roll Forward | The changes in the carrying amounts of AROs were as follows.
| PPL |  | LG&E |  | KU
Balance at December 31, 2022 | $ | 177 |  |  | $ | 86 |  |  | $ | 82 |
Accretion | 6 |  |  | 3 |  |  | 3 |
New obligations incurred | 2 |  |  | 1 |  |  | 1 |
Changes in estimated cash flow or settlement date | 14 |  |  | 11 |  |  | 5 |
Obligations settled | (26) |  |  | (9) |  |  | (17) |
Other | (5) |  |  | (6) |  |  | — |
Balance at September 30, 2023 | $ | 168 |  |  | $ | 86 |  |  | $ | 74 |

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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481850/410-20-50-1 + Details
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