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Related Party Transactions (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
PPL Electric Utilities Corp [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Financing Receivable, after Allowance for Credit Loss, Related Party, Type [Extensible Enumeration] | CEP Reserves, Inc. | CEP Reserves, Inc. |
Financing Receivable, after Allowance for Credit Loss | $ 0 | $ 0 |
PPL Electric Utilities Corp [Member] | PPL Services [Member] |  |  |
Related Party Transactions [Line Items] |  |  |
Related Party Transaction, Amounts of Transaction | 222 | 241 | $ 54
PPL Electric Utilities Corp [Member] | PPL EU Services [Member] |  |  |
Related Party Transactions [Line Items] |  |  |
Related Party Transaction, Amounts of Transaction | 0 | 0 | 222
PPL Electric Utilities Corp [Member] | CEP Reserves, Inc. |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Intercompany note with affiliate maximum borrowing capacity | 500 |  |
Louisville Gas And Electric Co [Member] | PPL Services [Member] |  |  |
Related Party Transactions [Line Items] |  |  |
Related Party Transaction, Amounts of Transaction | 42 | 13 | 3
Louisville Gas And Electric Co [Member] | Parent And Affiliate [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Intercompany Money Pool Agreement Unused Borrowing Capacity | 750 |  |
Louisville Gas And Electric Co [Member] | LKS [Member] |  |  |
Related Party Transactions [Line Items] |  |  |
Related Party Transaction, Amounts of Transaction | 115 | 153 | 169
Kentucky Utilities Co [Member] | PPL Services [Member] |  |  |
Related Party Transactions [Line Items] |  |  |
Related Party Transaction, Amounts of Transaction | 48 | 14 | 3
Kentucky Utilities Co [Member] | Parent And Affiliate [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Intercompany Money Pool Agreement Unused Borrowing Capacity | 557 |  |
Kentucky Utilities Co [Member] | LKS [Member] |  |  |
Related Party Transactions [Line Items] |  |  |
Related Party Transaction, Amounts of Transaction | $ 150 | $ 171 | $ 179

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- Definition Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(5)(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481990/310-10-45-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-5 + Details
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