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Financing Activities - Short-term Debt (Details) - Commercial Paper [Member] - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Short-term Debt [Line Items]    
Capacity $ 3,150  
Commercial Paper Issuances (c) 780 $ 303
Unused Capacity $ 2,370  
PPL Capital Funding [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 4.71% 4.76%
Capacity $ 1,350  
Commercial Paper Issuances (c) 427 $ 138
Unused Capacity $ 923  
PPL Electric [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 4.68%  
Capacity $ 650  
Commercial Paper Issuances (c) 55 $ 0
Unused Capacity $ 595  
LGE [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 4.67% 4.72%
Capacity $ 500  
Commercial Paper Issuances (c) 89 $ 25
Unused Capacity $ 411  
KU [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 4.71% 4.71%
Capacity $ 400  
Commercial Paper Issuances (c) 209 $ 140
Unused Capacity 191  
Rhode Island Energy    
Short-term Debt [Line Items]    
Capacity 250  
Commercial Paper Issuances (c) 0 0
Unused Capacity $ 250  
PPL Electric Utilities Corp [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 4.68%  
Capacity $ 650  
Commercial Paper Issuances (c) 55 $ 0
Unused Capacity $ 595  
Louisville Gas And Electric Co [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 4.67% 4.72%
Capacity $ 500  
Commercial Paper Issuances (c) 89 $ 25
Unused Capacity $ 411  
Kentucky Utilities Co [Member]    
Short-term Debt [Line Items]    
Weighted - Average Interest Rate 4.71% 4.71%
Capacity $ 400  
Commercial Paper Issuances (c) 209 $ 140
Unused Capacity $ 191