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Income and Other Taxes (Unrecognized to End) (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
Integer
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Income Tax Examination (Details) [Line Items]      
Number of major tax jurisdictions tax returns are filed | Integer 4    
Deferred Income Tax Expense (Benefit) $ 199 $ 201 $ 334
Increase (Decrease) in Regulatory Assets and Liabilities $ (162) 68 37
US - Federal [Member]      
Income Tax Examination (Details) [Line Items]      
Income tax examination, year(s) no longer under examination 2020 and prior    
Pennsylvania - State [Member]      
Income Tax Examination (Details) [Line Items]      
Income tax examination, year(s) no longer under examination 2021 and prior    
Kentucky - State [Member]      
Income Tax Examination (Details) [Line Items]      
Income tax examination, year(s) no longer under examination 2020 and prior    
PPL Electric Utilities Corp [Member]      
Income Tax Examination (Details) [Line Items]      
Number of major tax jurisdictions tax returns are filed | Integer 3    
Deferred Income Tax Expense (Benefit) $ 24 128 46
Increase (Decrease) in Regulatory Assets and Liabilities $ (67) 101 38
PPL Electric Utilities Corp [Member] | US - Federal [Member]      
Income Tax Examination (Details) [Line Items]      
Income tax examination, year(s) no longer under examination 2020 and prior    
PPL Electric Utilities Corp [Member] | Pennsylvania - State [Member]      
Income Tax Examination (Details) [Line Items]      
Income tax examination, year(s) no longer under examination 2021 and prior    
PPL Electric Utilities Corp [Member] | Kentucky - State [Member]      
Income Tax Examination (Details) [Line Items]      
Income tax examination, year(s) no longer under examination 2020 and prior    
Louisville Gas And Electric Co [Member]      
Income Tax Examination (Details) [Line Items]      
Number of major tax jurisdictions tax returns are filed | Integer 2    
Deferred Income Tax Expense (Benefit) $ (7) 7 (13)
Increase (Decrease) in Regulatory Assets and Liabilities $ 12 3 (25)
Louisville Gas And Electric Co [Member] | US - Federal [Member]      
Income Tax Examination (Details) [Line Items]      
Income tax examination, year(s) no longer under examination 2020 and prior    
Louisville Gas And Electric Co [Member] | Kentucky - State [Member]      
Income Tax Examination (Details) [Line Items]      
Income tax examination, year(s) no longer under examination 2020 and prior    
Kentucky Utilities Co [Member]      
Income Tax Examination (Details) [Line Items]      
Number of major tax jurisdictions tax returns are filed | Integer 2    
Deferred Income Tax Expense (Benefit) $ 2 (13) (7)
Increase (Decrease) in Regulatory Assets and Liabilities $ 6 $ (23) $ (25)
Kentucky Utilities Co [Member] | US - Federal [Member]      
Income Tax Examination (Details) [Line Items]      
Income tax examination, year(s) no longer under examination 2020 and prior    
Kentucky Utilities Co [Member] | Kentucky - State [Member]      
Income Tax Examination (Details) [Line Items]      
Income tax examination, year(s) no longer under examination 2020 and prior