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Income and Other Taxes (Tax Reform) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Tax Reform [Line Items] |  |  |
Income Tax Expense (Benefit) | $ 291 | $ 228 | $ 184
Net Increase in Regulatory Liability | (162) | 68 | 37
Deferred Tax Liabilities, Net | 3,497 | 3,344 |
PPL Electric Utilities Corp [Member] |  |  |
Tax Reform [Line Items] |  |  |
Income Tax Expense (Benefit) | 204 | 176 | 168
Net Increase in Regulatory Liability | (67) | 101 | 38
Deferred Tax Liabilities, Net | 1,781 | 1,726 |
Louisville Gas And Electric Co [Member] |  |  |
Tax Reform [Line Items] |  |  |
Income Tax Expense (Benefit) | 78 | 77 | 69
Net Increase in Regulatory Liability | 12 | 3 | (25)
Deferred Tax Liabilities, Net | 819 | 803 |
Kentucky Utilities Co [Member] |  |  |
Tax Reform [Line Items] |  |  |
Income Tax Expense (Benefit) | 99 | 89 | 77
Net Increase in Regulatory Liability | 6 | (23) | $ (25)
Deferred Tax Liabilities, Net | $ 956 | $ 924 |

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