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Related Party Transactions (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
PPL Electric Utilities Corp [Member] |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |
Notes Receivable from affiliates | $ 0 |  | $ 0 |  | $ 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 | $ 52 | $ 51 | $ 166 | $ 172 |
PPL Electric Utilities Corp [Member] | CEP Reserves, Inc |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |
Intercompany note with affiliate maximum borrowing capacity | 500 |  | 500 |  |
PPL Electric Utilities Corp [Member] | Accounts receivable from affiliates [Member] | PPL Services [Member] |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |
VEBA Funds Receivable | 0 |  | 0 |  |
Louisville Gas And Electric Co [Member] |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |
Notes Payable to affiliates | $ 6 |  | $ 6 |  | $ 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 | $ 10 | 0 | $ 30 | 0 |
Louisville Gas And Electric Co [Member] | Parent And Affiliate [Member] |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |
Intercompany Money Pool Agreement Unused Borrowing Capacity | 744 |  | 744 |  |
Louisville Gas And Electric Co [Member] | LKS [Member] |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |
Related Party Transaction, Amounts of Transaction | 25 | 34 | 85 | 114 |
Kentucky Utilities Co [Member] |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |
Notes Payable to affiliates | $ 21 |  | $ 21 |  | $ 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 | $ 11 | 0 | $ 33 | 0 |
Kentucky Utilities Co [Member] | Parent And Affiliate [Member] |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |
Intercompany Money Pool Agreement Unused Borrowing Capacity | 604 |  | 604 |  |
Kentucky Utilities Co [Member] | LKS [Member] |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |
Related Party Transaction, Amounts of Transaction | $ 35 | $ 39 | $ 110 | $ 125 |

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- Definition Intercompany receivable related to IRS private letter ruling permitting a transfer of excess funds from the PPL Bargaining Unite Retiree Health Plan VEBA to a new subaccount within the VEBA to be used to pay medical claims of active bargaining unit employees + References No definition available. + Details
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