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Income Taxes (Tables) | 6 Months Ended
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Jun. 30, 2025
Income Taxes [Line Items] |
Schedule of Effective Income Tax Rate Reconciliation | Reconciliations of income tax expense (benefit) for the periods ended June 30 are as follows.
(PPL)
| Three Months |  | Six Months
| 2025 |  | 2024 |  | 2025 |  | 2024
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 48 |  |  | $ | 50 |  |  | $ | 157 |  |  | $ | 132 |
Increase (decrease) due to: |  |  |  |  |  |  |
State income taxes, net of federal income tax benefit | 8 |  |  | 11 |  |  | 28 |  |  | 28 |
Valuation allowance adjustments | 2 |  |  | 2 |  |  | 6 |  |  | 5 |
Amortization of investment tax credit including deferred taxes on basis adjustment | (1) |  |  | — |  |  | (4) |  |  | (2) |
Utility rate-making tax adjustments (a) | (5) |  |  | (5) |  |  | (14) |  |  | (10) |
Amortization of excess deferred federal and state income taxes | (6) |  |  | (7) |  |  | (21) |  |  | (20) |
Other | 1 |  |  | (1) |  |  | (3) |  |  | (2) |
Total increase (decrease) | (1) |  |  | — |  |  | (8) |  |  | (1) |
Total income tax expense (benefit) | $ | 47 |  |  | $ | 50 |  |  | $ | 149 |  |  | $ | 131 |
(a) Primarily consists of tax impacts of AFUDC equity and related depreciation across PPL's regulated utility subsidiaries and flow through tax impacts of Pennsylvania utility ratemaking. Flow through occurs when the regulator excludes deferred tax expense or benefit from recoverable costs when determining income tax expense.
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 June 30 are as follows.
(PPL Electric) |  |  |  |  |  |  |
| Three Months |  | Six Months
| 2025 |  | 2024 |  | 2025 |  | 2024
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 38 |  |  | $ | 41 |  |  | $ | 88 |  |  | $ | 83 |
Increase (decrease) due to: |  |  |  |  |  |  |
State income taxes, net of federal income tax benefit | 11 |  |  | 13 |  |  | 27 |  |  | 26 |
Utility rate-making tax adjustments (a) | (6) |  |  | (6) |  |  | (12) |  |  | (10) |
Amortization of excess deferred federal and state income taxes | (2) |  |  | (3) |  |  | (5) |  |  | (5) |
Other | 2 |  |  | 1 |  |  | (1) |  |  | — |
Total increase (decrease) | 5 |  |  | 5 |  |  | 9 |  |  | 11 |
Total income tax expense (benefit) | $ | 43 |  |  | $ | 46 |  |  | $ | 97 |  |  | $ | 94 |
(a) Primarily consists of tax impacts of AFUDC equity and related depreciation and flow through tax impacts of Pennsylvania utility ratemaking. Flow through occurs when the regulator excludes deferred tax expense or benefit from recoverable costs when determining income tax expense.
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 June 30 are as follows.
(LG&E) |  |  |  |  |  |  |
| Three Months |  | Six Months
| 2025 |  | 2024 |  | 2025 |  | 2024
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 15 |  |  | $ | 17 |  |  | $ | 42 |  |  | $ | 41 |
Increase (decrease) due to: |  |  |  |  |  |  |
State income taxes, net of federal income tax benefit | 3 |  |  | 3 |  |  | 8 |  |  | 7 |
Amortization of excess deferred federal and state income taxes | (3) |  |  | (3) |  |  | (7) |  |  | (6) |
Other | (1) |  |  | — |  |  | (3) |  |  | (1) |
Total increase (decrease) | (1) |  |  | — |  |  | (2) |  |  | — |
Total income tax expense (benefit) | $ | 14 |  |  | $ | 17 |  |  | $ | 40 |  |  | $ | 41 |
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 June 30 are as follows.
(KU) |  |  |  |  |  |  |
| Three Months |  | Six Months
| 2025 |  | 2024 |  | 2025 |  | 2024
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 20 |  |  | $ | 20 |  |  | $ | 53 |  |  | $ | 48 |
Increase (decrease) due to: |  |  |  |  |  |  |
State income taxes, net of federal income tax benefit | 4 |  |  | 4 |  |  | 10 |  |  | 9 |
Amortization of excess deferred federal and state income taxes | (4) |  |  | (4) |  |  | (9) |  |  | (9) |
Other | (1) |  |  | (1) |  |  | (4) |  |  | (2) |
Total increase (decrease) | (1) |  |  | (1) |  |  | (3) |  |  | (2) |
Total income tax expense (benefit) | $ | 19 |  |  | $ | 19 |  |  | $ | 50 |  |  | $ | 46 |

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