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Asset Retirement Obligations (Tables) | 9 Months Ended
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Sep. 30, 2021
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, 2020 | $ | 182 |  |  | $ | 67 |  |  | $ | 115 |
Accretion | 12 |  |  | 4 |  |  | 8 |
Changes in estimated timing or cost | 50 |  |  | 34 |  |  | 16 |
Obligations settled | (43) |  |  | (16) |  |  | (27) |
Balance at September 30, 2021 | $ | 201 |  |  | $ | 89 |  |  | $ | 112 |
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, 2020 | $ | 182 |  |  | $ | 67 |  |  | $ | 115 |
Accretion | 12 |  |  | 4 |  |  | 8 |
Changes in estimated timing or cost | 50 |  |  | 34 |  |  | 16 |
Obligations settled | (43) |  |  | (16) |  |  | (27) |
Balance at September 30, 2021 | $ | 201 |  |  | $ | 89 |  |  | $ | 112 |
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, 2020 | $ | 182 |  |  | $ | 67 |  |  | $ | 115 |
Accretion | 12 |  |  | 4 |  |  | 8 |
Changes in estimated timing or cost | 50 |  |  | 34 |  |  | 16 |
Obligations settled | (43) |  |  | (16) |  |  | (27) |
Balance at September 30, 2021 | $ | 201 |  |  | $ | 89 |  |  | $ | 112 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
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