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Related Party Transactions (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
PPL Electric Utilities Corp [Member] |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |
Notes Receivable from affiliates | $ 418 |  | $ 418 |  | $ 0
Financing Receivable, after Allowance for Credit Loss, Related Party, Type [Extensible Enumeration] | CEP Reserves, Inc |  | CEP Reserves, Inc |  | CEP Reserves, Inc
PPL Electric Utilities Corp [Member] | PPL Services [Member] |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |
Related Party Transaction, Amounts of Transaction | $ 53 | $ 52 | $ 159 | $ 166 |
PPL Electric Utilities Corp [Member] | CEP Reserves, Inc |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |
Intercompany note with affiliate maximum borrowing capacity | 800 |  | 800 |  |
Louisville Gas And Electric Co [Member] |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |
Notes Payable to affiliates | $ 34 |  | $ 34 |  | $ 0
Notes Payable, Related Party, Type [Extensible Enumeration] | Affiliated Entity [Member] |  | Affiliated Entity [Member] |  | Affiliated Entity [Member]
Louisville Gas And Electric Co [Member] | PPL Services [Member] |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |
Related Party Transaction, Amounts of Transaction | $ 15 | 10 | $ 46 | 30 |
Louisville Gas And Electric Co [Member] | Parent And Affiliate [Member] |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |
Intercompany Money Pool Agreement Unused Borrowing Capacity | 716 |  | 716 |  |
Louisville Gas And Electric Co [Member] | LKS [Member] |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |
Related Party Transaction, Amounts of Transaction | 25 | 25 | 82 | 85 |
Kentucky Utilities Co [Member] |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |
Notes Payable to affiliates | $ 128 |  | $ 128 |  | $ 0
Notes Payable, Related Party, Type [Extensible Enumeration] | Affiliated Entity [Member] |  | Affiliated Entity [Member] |  | Affiliated Entity [Member]
Kentucky Utilities Co [Member] | PPL Services [Member] |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |
Related Party Transaction, Amounts of Transaction | $ 15 | 11 | $ 45 | 33 |
Kentucky Utilities Co [Member] | Parent And Affiliate [Member] |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |
Intercompany Money Pool Agreement Unused Borrowing Capacity | 522 |  | 522 |  |
Kentucky Utilities Co [Member] | LKS [Member] |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |
Related Party Transaction, Amounts of Transaction | $ 31 | $ 35 | $ 99 | $ 110 |

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