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Financing Activities - Short-term Debt (Details) - Commercial Paper [Member] - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Short-term Debt [Line Items]    
Capacity $ 3,300  
Commercial Paper Issuances (c) 291 $ 993
Unused Capacity $ 3,009  
PPL Capital Funding [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 5.51% 5.66%
Capacity $ 1,350  
Commercial Paper Issuances (c) 218 $ 365
Unused Capacity 1,132  
PPL Electric [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate   5.67%
Capacity 650  
Commercial Paper Issuances (c) 0 $ 510
Unused Capacity $ 650  
LGE [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 5.49%  
Capacity $ 500  
Commercial Paper Issuances (c) 28 $ 0
Unused Capacity $ 472  
KU [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 5.49% 5.64%
Capacity $ 400  
Commercial Paper Issuances (c) 45 $ 93
Unused Capacity 355  
Rhode Island Energy    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate   5.72%
Capacity 400  
Commercial Paper Issuances (c) 0 $ 25
Unused Capacity 400  
PPL Electric Utilities Corp [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate   5.67%
Capacity 650  
Commercial Paper Issuances (c) 0 $ 510
Unused Capacity $ 650  
Louisville Gas And Electric Co [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 5.49%  
Capacity $ 500  
Commercial Paper Issuances (c) 28 $ 0
Unused Capacity $ 472  
Kentucky Utilities Co [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 5.49% 5.64%
Capacity $ 400  
Commercial Paper Issuances (c) 45 $ 93
Unused Capacity $ 355