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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