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Related Party Transactions (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
PPL Electric Utilities Corp [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Notes Receivable from affiliates | $ 554 |  | $ 0
Financing Receivable, after Allowance for Credit Loss, Related Party, Type [Extensible Enumeration] | CEP Reserves, Inc |  | CEP Reserves, Inc
PPL Electric Utilities Corp [Member] | PPL Services [Member] |  |  |
Support Costs (Details) [Abstract] |  |  |
Related Party Transaction, Amounts of Transaction | $ 56 | $ 59 |
PPL Electric Utilities Corp [Member] | CEP Reserves, Inc |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Intercompany note with affiliate maximum borrowing capacity | 800 |  |
Louisville Gas And Electric Co [Member] | PPL Services [Member] |  |  |
Support Costs (Details) [Abstract] |  |  |
Related Party Transaction, Amounts of Transaction | 11 | 8 |
Louisville Gas And Electric Co [Member] | Parent And Affiliate [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Intercompany Money Pool Agreement Unused Borrowing Capacity | 722 |  |
Louisville Gas And Electric Co [Member] | LKS [Member] |  |  |
Support Costs (Details) [Abstract] |  |  |
Related Party Transaction, Amounts of Transaction | 29 | 32 |
Kentucky Utilities Co [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Notes Payable to affiliates | $ 37 |  | $ 0
Notes Payable, Related Party, Type [Extensible Enumeration] | Affiliated Entity [Member] |  | Affiliated Entity [Member]
Kentucky Utilities Co [Member] | PPL Services [Member] |  |  |
Support Costs (Details) [Abstract] |  |  |
Related Party Transaction, Amounts of Transaction | $ 11 | 9 |
Kentucky Utilities Co [Member] | Parent And Affiliate [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Intercompany Money Pool Agreement Unused Borrowing Capacity | 568 |  |
Kentucky Utilities Co [Member] | LKS [Member] |  |  |
Support Costs (Details) [Abstract] |  |  |
Related Party Transaction, Amounts of Transaction | $ 38 | $ 41 |

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