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Related Party Transactions (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
PPL Electric Utilities Corp [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Notes Receivable from Affiliate | $ 143 | $ 222 |
Financing Receivable, after Allowance for Credit Loss, Related Party, Name [Extensible Enumeration] | CEP Reserves, Inc. | CEP Reserves, Inc. |
PPL Electric Utilities Corp [Member] | PPL Services [Member] |  |  |
Related Party Transactions [Line Items] |  |  |
Related Party Transaction, Amounts of Transaction | $ 261 | $ 227 | $ 222
Intercompany Borrowings (Numeric) [Abstract] |  |  |
VEBA Funds Receivable | 0 | 7 |
PPL Electric Utilities Corp [Member] | PPL Services [Member] | Accounts receivable from affiliates [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
VEBA Funds Receivable |  | 4 |
PPL Electric Utilities Corp [Member] | PPL Services [Member] | Other Noncurrent Assets [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
VEBA Funds Receivable |  | $ 3 |
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] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Notes Payable, Related Party [Extensible Enumeration] | Related Party | Affiliated Entity [Member] |
Notes Payable with affiliates | $ 0 | $ 43 |
Louisville Gas And Electric Co [Member] | PPL Services [Member] |  |  |
Related Party Transactions [Line Items] |  |  |
Related Party Transaction, Amounts of Transaction | 135 | 66 | 42
Louisville Gas And Electric Co [Member] | Parent And Affiliate [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Intercompany Money Pool Agreement Unused Borrowing Capacity | 750 | 43 |
Louisville Gas And Electric Co [Member] | LKS [Member] |  |  |
Related Party Transactions [Line Items] |  |  |
Related Party Transaction, Amounts of Transaction | $ 113 | $ 105 | 115
Kentucky Utilities Co [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Notes Payable, Related Party [Extensible Enumeration] | Related Party | Affiliated Entity [Member] |
Notes Payable with affiliates | $ 36 | $ 73 |
Kentucky Utilities Co [Member] | PPL Services [Member] |  |  |
Related Party Transactions [Line Items] |  |  |
Related Party Transaction, Amounts of Transaction | 131 | 65 | 48
Kentucky Utilities Co [Member] | Parent And Affiliate [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Intercompany Money Pool Agreement Unused Borrowing Capacity | 614 | 73 |
Kentucky Utilities Co [Member] | LKS [Member] |  |  |
Related Party Transactions [Line Items] |  |  |
Related Party Transaction, Amounts of Transaction | $ 141 | $ 130 | $ 150

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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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