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Retirement and Postemployment Benefits (Savings Plans and Employee Stock Ownership Plan) (Details) - Deferred Savings Plans 401K [Member] - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Defined Contribution Pension And Other Postretirement Plans [Line Items] |  |  |
Employer contributions to deferred savings plans | $ 60 | $ 53 | $ 48
PPL Electric Utilities Corp [Member] |  |  |
Defined Contribution Pension And Other Postretirement Plans [Line Items] |  |  |
Employer contributions to deferred savings plans | 10 | 9 | 8
Louisville Gas And Electric Co [Member] |  |  |
Defined Contribution Pension And Other Postretirement Plans [Line Items] |  |  |
Employer contributions to deferred savings plans | 10 | 8 | 8
Kentucky Utilities Co [Member] |  |  |
Defined Contribution Pension And Other Postretirement Plans [Line Items] |  |  |
Employer contributions to deferred savings plans | $ 8 | $ 6 | $ 6

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- Definition Amount of contributions made by employer into fund established for purposes of making future disbursement to individual in accordance with deferred compensation arrangement. + References No definition available. + Details
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