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Financing Activities - Short-term Debt (Details) - Commercial Paper [Member] - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Short-term Debt [Line Items]    
Capacity $ 2,775  
Commercial Paper Issuances 988 $ 69
Unused Capacity $ 1,787  
PPL Capital Funding [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 1.19%  
Capacity $ 1,350  
Commercial Paper Issuances 256 0
Unused Capacity 1,094  
PPL Electric [Member]    
Short-term Debt [Line Items]    
Capacity 650  
Commercial Paper Issuances 0 $ 0
Unused Capacity $ 650  
LGE [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 1.20% 0.31%
Capacity $ 425  
Commercial Paper Issuances 394 $ 69
Unused Capacity $ 31  
KU [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 1.21%  
Capacity $ 350  
Commercial Paper Issuances 338 0
Unused Capacity 12  
PPL Electric Utilities Corp [Member]    
Short-term Debt [Line Items]    
Capacity 650  
Commercial Paper Issuances 0 $ 0
Unused Capacity $ 650  
Louisville Gas And Electric Co [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 1.20% 0.31%
Capacity $ 425  
Commercial Paper Issuances 394 $ 69
Unused Capacity $ 31  
Kentucky Utilities Co [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 1.21%  
Capacity $ 350  
Commercial Paper Issuances 338 $ 0
Unused Capacity $ 12