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Income Taxes (Tables) | 9 Months Ended
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Sep. 30, 2023
Income Taxes [Line Items] |
Schedule of Effective Income Tax Rate Reconciliation | Reconciliations of income tax expense (benefit) for the periods ended September 30 are as follows.
(PPL)
| Three Months |  | Nine Months
| 2023 |  | 2022 |  | 2023 |  | 2022
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 60 |  |  | $ | 45 |  |  | $ | 167 |  |  | $ | 150 |
Increase (decrease) due to: |  |  |  |  |  |  |
State income taxes, net of federal income tax benefit | 16 |  |  | 8 |  |  | 49 |  |  | 56 |
Valuation allowance adjustments | 1 |  |  | (1) |  |  | 6 |  |  | 9 |
Income tax credits (a) | (9) |  |  | (1) |  |  | (11) |  |  | (3) |
Amortization of investment tax credit including deferred taxes on basis adjustment | (1) |  |  | — |  |  | (2) |  |  | (7) |
Depreciation and other items not normalized | (2) |  |  | — |  |  | (9) |  |  | (8) |
Amortization of excess deferred federal and state income taxes | (13) |  |  | (7) |  |  | (33) |  |  | (47) |
Federal and state income tax return adjustments | 3 |  |  | — |  |  | (2) |  |  | (1) |
State income tax rate change (b) | 1 |  |  | (5) |  |  | — |  |  | (5) |
Other | 2 |  |  | 2 |  |  | 5 |  |  | 3 |
Total increase (decrease) | (2) |  |  | (4) |  |  | 3 |  |  | (3) |
Total income tax expense (benefit) | $ | 58 |  |  | $ | 41 |  |  | $ | 170 |  |  | $ | 147 |
(a) The three and nine month periods ended September 30, 2023 primarily include a deferred tax benefit from renewable tax credits that will be acquired at a discount. (b) The three and nine months ended September 30, 2022 include a deferred tax benefit of $5 million, due to the corporate net income tax rate reduction. See "Pennsylvania State Tax Reform" below for additional information.
PPL Electric Utilities Corp [Member] |
Income Taxes [Line Items] |
Schedule of Effective Income Tax Rate Reconciliation | Reconciliations of income tax expense (benefit) for the periods ended September 30 are as follows.
(PPL Electric) |  |  |  |  |  |  |
| Three Months |  | Nine Months
| 2023 |  | 2022 |  | 2023 |  | 2022
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 38 |  |  | $ | 38 |  |  | $ | 107 |  |  | $ | 114 |
Increase (decrease) due to: |  |  |  |  |  |  |
State income taxes, net of federal income tax benefit | 13 |  |  | 14 |  |  | 36 |  |  | 43 |
Depreciation and other items not normalized | (1) |  |  | (1) |  |  | (8) |  |  | (7) |
Amortization of excess deferred federal and state income taxes | (4) |  |  | (4) |  |  | (8) |  |  | (9) |
State income tax rate change (a) | — |  |  | (9) |  |  | (1) |  |  | (9) |
Other | (3) |  |  | (1) |  |  | — |  |  | (1) |
Total increase (decrease) | 5 |  |  | (1) |  |  | 19 |  |  | 17 |
Total income tax expense (benefit) | $ | 43 |  |  | $ | 37 |  |  | $ | 126 |  |  | $ | 131 |
(a) The three and nine months ended September 30, 2022 include a deferred tax benefit of $9 million, due to the corporate net income tax rate reduction. See "Pennsylvania State Tax Reform" below for additional information.
Louisville Gas And Electric Co [Member] |
Income Taxes [Line Items] |
Schedule of Effective Income Tax Rate Reconciliation | Reconciliations of income tax expense (benefit) for the periods ended September 30 are as follows.
(LG&E) |  |  |  |  |  |  |
| Three Months |  | Nine Months
| 2023 |  | 2022 |  | 2023 |  | 2022
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 21 |  |  | $ | 21 |  |  | $ | 56 |  |  | $ | 57 |
Increase (decrease) due to: |  |  |  |  |  |  |
State income taxes, net of federal income tax benefit | 4 |  |  | 4 |  |  | 10 |  |  | 11 |
Amortization of excess deferred federal and state income taxes | (3) |  |  | (3) |  |  | (9) |  |  | (17) |
Other | (1) |  |  | (1) |  |  | (2) |  |  | (2) |
Total increase (decrease) | — |  |  | — |  |  | (1) |  |  | (8) |
Total income tax expense (benefit) | $ | 21 |  |  | $ | 21 |  |  | $ | 55 |  |  | $ | 49 |
Kentucky Utilities Co [Member] |
Income Taxes [Line Items] |
Schedule of Effective Income Tax Rate Reconciliation | Reconciliations of income tax expense (benefit) for the periods ended September 30 are as follows.
(KU) |  |  |  |  |  |  |
| Three Months |  | Nine Months
| 2023 |  | 2022 |  | 2023 |  | 2022
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 26 |  |  | $ | 25 |  |  | $ | 63 |  |  | $ | 70 |
Increase (decrease) due to: |  |  |  |  |  |  |
State income taxes, net of federal income tax benefit | 5 |  |  | 5 |  |  | 12 |  |  | 13 |
Amortization of excess deferred federal and state income taxes | (5) |  |  | (4) |  |  | (13) |  |  | (16) |
Other | (2) |  |  | (2) |  |  | (3) |  |  | (4) |
Total increase (decrease) | (2) |  |  | (1) |  |  | (4) |  |  | (7) |
Total income tax expense (benefit) | $ | 24 |  |  | $ | 24 |  |  | $ | 59 |  |  | $ | 63 |

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