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Financing Activities - Short-term Debt (Details) - Commercial Paper [Member] - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Short-term Debt [Line Items]    
Capacity $ 2,900  
Commercial Paper Issuances (b) 0 $ 987
Unused Capacity 2,900  
PPL Capital Funding [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate   4.84%
Capacity 1,350  
Commercial Paper Issuances (b) 0 $ 561
Unused Capacity 1,350  
PPL Electric [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate   4.74%
Capacity 650  
Commercial Paper Issuances (b) 0 $ 145
Unused Capacity 650  
LGE [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate   4.94%
Capacity 500  
Commercial Paper Issuances (b) 0 $ 180
Unused Capacity 500  
KU [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate   4.90%
Capacity 400  
Commercial Paper Issuances (b) 0 $ 101
Unused Capacity 400  
PPL Electric Utilities Corp [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate   4.74%
Capacity 650  
Commercial Paper Issuances (b) 0 $ 145
Unused Capacity 650  
Louisville Gas And Electric Co [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate   4.94%
Capacity 500  
Commercial Paper Issuances (b) 0 $ 180
Unused Capacity 500  
Kentucky Utilities Co [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate   4.90%
Capacity 400  
Commercial Paper Issuances (b) 0 $ 101
Unused Capacity $ 400