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Other Income (Expense) - net (Tables) | 6 Months Ended
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Jun. 30, 2025
Other Income (Expense) Net [Line Items] |
Schedule of Other Nonoperating Income (Expense) | The details of "Other Income (Expense) - net" for the periods ended June 30, were:
| Three Months |  | Six Months
| 2025 |  | 2024 |  | 2025 |  | 2024
Defined benefit plans - non-service credits (Note 9) | $ | 7 |  |  | $ | 15 |  |  | $ | 15 |  |  | $ | 23 |
Interest income | 2 |  |  | 6 |  |  | 8 |  |  | 15 |
AFUDC - equity component | 20 |  |  | 12 |  |  | 35 |  |  | 21 |
Miscellaneous | (6) |  |  | (1) |  |  | (7) |  |  | (5) |
Other Income (Expense) - net | $ | 23 |  |  | $ | 32 |  |  | $ | 51 |  |  | $ | 54 |
PPL Electric Utilities Corp [Member] |
Other Income (Expense) Net [Line Items] |
Schedule of Other Nonoperating Income (Expense) | The details of "Other Income (Expense) - net" for the periods ended June 30, were:
| Three Months |  | Six Months
| 2025 |  | 2024 |  | 2025 |  | 2024
Defined benefit plans - non-service credits (Note 9) | $ | 4 |  |  | $ | 4 |  |  | $ | 7 |  |  | $ | 9 |
AFUDC - equity component | 8 |  |  | 7 |  |  | 15 |  |  | 11 |
Miscellaneous | (1) |  |  | — |  |  | — |  |  | — |
Other Income (Expense) - net | $ | 11 |  |  | $ | 11 |  |  | $ | 22 |  |  | $ | 20 |
Louisville Gas And Electric Co [Member] |
Other Income (Expense) Net [Line Items] |
Schedule of Other Nonoperating Income (Expense) | The details of "Other Income (Expense) - net" for the periods ended June 30, were:
| Three Months |  | Six Months |
| 2025 |  | 2024 |  | 2025 |  | 2024 |
Defined benefit plans - non-service credits (Note 9) | $ | 1 |  |  | $ | 2 |  |  | $ | 1 |  |  | $ | 2 |  |
AFUDC - equity component | 4 |  |  | 2 |  |  | 7 |  |  | 3 |  |
Miscellaneous | — |  |  | — |  |  | — |  |  | 1 |  |
Other Income (Expense) - net | $ | 5 |  |  | $ | 4 |  |  | $ | 8 |  |  | $ | 6 |  |
Kentucky Utilities Co [Member] |
Other Income (Expense) Net [Line Items] |
Schedule of Other Nonoperating Income (Expense) | The details of "Other Income (Expense) - net" for the periods ended June 30, were:
| Three Months |  | Six Months
| 2025 |  | 2024 |  | 2025 |  | 2024
Defined benefit plans - non-service credits (Note 9) | $ | 2 |  |  | $ | 3 |  |  | $ | 3 |  |  | $ | 4 |
AFUDC - equity component | 5 |  |  | 2 |  |  | 8 |  |  | 3 |
Miscellaneous | (2) |  |  | (1) |  |  | (1) |  |  | (1) |
Other Income (Expense) - net | $ | 5 |  |  | $ | 4 |  |  | $ | 10 |  |  | $ | 6 |

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- Definition Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References No definition available. + Details
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