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Financing Activities - Short-term Debt (Details) - Commercial Paper [Member] - USD ($)
$ in Millions
Sep. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Short-term Debt [Line Items]      
Capacity $ 3,300    
Commercial Paper Issuances (c) 287   $ 987
Unused Capacity 3,013    
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 5.47%   4.74%
Capacity $ 650    
Commercial Paper Issuances (c) 187   $ 145
Unused Capacity 463    
LGE [Member]      
Short-term Debt [Line Items]      
Weighted - Average Interest Rate     4.94%
Capacity 500    
Commercial Paper Issuances (c) 0   $ 180
Unused Capacity $ 500    
KU [Member]      
Short-term Debt [Line Items]      
Weighted - Average Interest Rate 5.45%   4.90%
Capacity $ 400    
Commercial Paper Issuances (c) 25   $ 101
Unused Capacity $ 375    
Rhode Island Energy      
Short-term Debt [Line Items]      
Weighted - Average Interest Rate 5.49%    
Capacity $ 400 $ 400  
Commercial Paper Issuances (c) 75   $ 0
Unused Capacity $ 325    
PPL Electric Utilities Corp [Member]      
Short-term Debt [Line Items]      
Weighted - Average Interest Rate 5.47%   4.74%
Capacity $ 650    
Commercial Paper Issuances (c) 187   $ 145
Unused Capacity 463    
Louisville Gas And Electric Co [Member]      
Short-term Debt [Line Items]      
Weighted - Average Interest Rate     4.94%
Capacity 500    
Commercial Paper Issuances (c) 0   $ 180
Unused Capacity $ 500    
Kentucky Utilities Co [Member]      
Short-term Debt [Line Items]      
Weighted - Average Interest Rate 5.45%   4.90%
Capacity $ 400    
Commercial Paper Issuances (c) 25   $ 101
Unused Capacity $ 375