v3.26.3
Financing Activities - Long-term Debt (Details) - USD ($)
$ in Millions
1 Months Ended
May 31, 2026
Sep. 30, 2026
Jul. 31, 2026
May 12, 2026
Dec. 31, 2025
Long-term Debt (Numeric) [Abstract]          
Long-term debt due within one year   $ 358     $ 904
Long-term Debt, Excluding Current Maturities   $ 19,853     17,990
Remarketable Senior Notes | Remarketable Senior Notes due 2034          
Long-term Debt (Numeric) [Abstract]          
Stated interest rate   4.02%      
Remarketable Senior Notes | Remarketable Senior Notes due 2039          
Long-term Debt (Numeric) [Abstract]          
Stated interest rate   4.02%      
PPL Electric [Member]          
Long-term Debt (Numeric) [Abstract]          
Capacity   $ 750      
Borrowed   0     0
PPL Electric [Member] | First Mortgage Bond [Member] | First Mortgage Bonds Due 2056          
Long-term Debt (Numeric) [Abstract]          
Principal amount       $ 500  
Stated interest rate       5.75%  
Proceeds from Issuance of First Mortgage Bond $ 491        
PPL Capital Funding [Member]          
Long-term Debt (Numeric) [Abstract]          
Capacity   1,700      
Borrowed   0     0
LGE [Member]          
Long-term Debt (Numeric) [Abstract]          
Capacity   600      
Borrowed   0     0
LGE [Member] | Louisville/Jefferson County Metro Government of Kentucky Pollution Control Revenue Bonds, 2005 Series A | Remarketed [Member]          
Long-term Debt (Numeric) [Abstract]          
Principal amount     $ 40    
Stated interest rate     3.80%    
KU [Member]          
Long-term Debt (Numeric) [Abstract]          
Capacity   600      
Borrowed   0     0
KU [Member] | Carroll County Environmental Facilities Revenue Refunding Bonds, 2006 Series B | Remarketed [Member]          
Long-term Debt (Numeric) [Abstract]          
Principal amount   $ 96      
Stated interest rate   4.00%      
KU [Member] | Carroll County Environmental Facilities Revenue Bonds, 2008 series A | Remarketed [Member]          
Long-term Debt (Numeric) [Abstract]          
Principal amount   $ 50      
Stated interest rate   4.25%      
Rhode Island Energy | Senior Notes [Member] | Senior Notes Due 2056          
Long-term Debt (Numeric) [Abstract]          
Principal amount       $ 400  
Stated interest rate       6.00%  
Proceeds from Issuance of Senior Long-Term Debt 396        
PPL Electric Utilities Corp [Member]          
Long-term Debt (Numeric) [Abstract]          
Capacity   $ 750      
Borrowed   0     0
Long-term debt due within one year   108     0
Long-term Debt, Excluding Current Maturities   6,092     5,707
PPL Electric Utilities Corp [Member] | First Mortgage Bond [Member] | First Mortgage Bonds Due 2056          
Long-term Debt (Numeric) [Abstract]          
Principal amount       $ 500  
Stated interest rate       5.75%  
Proceeds from Issuance of First Mortgage Bond $ 491        
Louisville Gas And Electric Co [Member]          
Long-term Debt (Numeric) [Abstract]          
Capacity   600      
Borrowed   0     0
Long-term debt due within one year   190     90
Long-term Debt, Excluding Current Maturities   2,626     2,775
Louisville Gas And Electric Co [Member] | Louisville/Jefferson County Metro Government of Kentucky Pollution Control Revenue Bonds, 2005 Series A | Remarketed [Member]          
Long-term Debt (Numeric) [Abstract]          
Principal amount     $ 40    
Stated interest rate     3.80%    
Kentucky Utilities Co [Member]          
Long-term Debt (Numeric) [Abstract]          
Capacity   600      
Borrowed   0     0
Long-term debt due within one year   60     164
Long-term Debt, Excluding Current Maturities   3,433     $ 3,346
Kentucky Utilities Co [Member] | Carroll County Environmental Facilities Revenue Refunding Bonds, 2006 Series B | Remarketed [Member]          
Long-term Debt (Numeric) [Abstract]          
Principal amount   $ 96      
Stated interest rate   4.00%      
Kentucky Utilities Co [Member] | Carroll County Environmental Facilities Revenue Bonds, 2008 series A | Remarketed [Member]          
Long-term Debt (Numeric) [Abstract]          
Principal amount   $ 50      
Stated interest rate   4.25%