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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