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Financing Activities - Short-term Debt (Details) - Commercial Paper [Member] - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Jun. 30, 2022
Short-term Debt [Line Items]      
Capacity $ 3,300    
Commercial Paper Issuances (c) 243 $ 987  
Unused Capacity 3,057    
PPL Capital Funding [Member]      
Short-term Debt [Line Items]      
Weighted - Average Interest Rate   4.84%  
Capacity 1,350    
Commercial Paper Issuances (c) 0 $ 561  
Unused Capacity 1,350    
PPL Electric [Member]      
Short-term Debt [Line Items]      
Weighted - Average Interest Rate   4.74% 5.31%
Capacity 650    
Commercial Paper Issuances (c) 130 $ 145  
Unused Capacity 520    
LGE [Member]      
Short-term Debt [Line Items]      
Weighted - Average Interest Rate   4.94% 5.30%
Capacity 500    
Commercial Paper Issuances (c) 21 $ 180  
Unused Capacity 479    
KU [Member]      
Short-term Debt [Line Items]      
Weighted - Average Interest Rate   4.90% 5.34%
Capacity 400    
Commercial Paper Issuances (c) 92 $ 101  
Unused Capacity 308    
Rhode Island Energy      
Short-term Debt [Line Items]      
Capacity 400    
Commercial Paper Issuances (c) 0 $ 0  
Unused Capacity 400    
PPL Electric Utilities Corp [Member]      
Short-term Debt [Line Items]      
Weighted - Average Interest Rate   4.74% 5.31%
Capacity 650    
Commercial Paper Issuances (c) 130 $ 145  
Unused Capacity 520    
Louisville Gas And Electric Co [Member]      
Short-term Debt [Line Items]      
Weighted - Average Interest Rate   4.94% 5.30%
Capacity 500    
Commercial Paper Issuances (c) 21 $ 180  
Unused Capacity 479    
Kentucky Utilities Co [Member]      
Short-term Debt [Line Items]      
Weighted - Average Interest Rate   4.90% 5.34%
Capacity 400    
Commercial Paper Issuances (c) 92 $ 101  
Unused Capacity $ 308