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Financing Activities - Credit Arrangements (Details) - USD ($)
$ in Millions
Jan. 01, 2025
Dec. 31, 2024
Dec. 31, 2023
Commercial Paper [Member]      
Financing Activities [Line Items]      
Commercial paper issuances   $ 303 $ 993
PPL Capital Funding [Member]      
Financing Activities [Line Items]      
Capacity   1,450  
Borrowed   0 0
Letters of credit and commercial paper issued   153 403
Unused capacity   1,297  
PPL Capital Funding [Member] | Commercial Paper [Member]      
Financing Activities [Line Items]      
Commercial paper issuances   138 365
PPL Capital Funding [Member] | Syndicated Credit Facility [Member]      
Financing Activities [Line Items]      
Capacity   1,250  
Borrowed   0 0
Letters of credit and commercial paper issued   138 390
Unused capacity   $ 1,112  
Maximum percentage of debt to total capitalization allowed under the credit facility   70.00%  
Potential capacity increase   $ 400  
Line of Credit Facility, Borrowing Capacity Sublimit   1,000 1,000
PPL Capital Funding [Member] | Syndicated Credit Facility [Member] | Commercial Paper [Member]      
Financing Activities [Line Items]      
Commercial paper issuances   138 365
PPL Capital Funding [Member] | Syndicated Credit Facility [Member] | Subsequent Event [Member]      
Financing Activities [Line Items]      
Capacity $ 1,500    
PPL Capital Funding [Member] | Bilateral Credit Facility [Member]      
Financing Activities [Line Items]      
Capacity   100  
Borrowed   0 0
Letters of credit and commercial paper issued   0 0
Unused capacity   $ 100  
Maximum percentage of debt to total capitalization allowed under the credit facility   70.00%  
Potential capacity increase   $ 30  
PPL Capital Funding [Member] | Bilateral Credit Facility      
Financing Activities [Line Items]      
Capacity   100  
Borrowed   0 0
Letters of credit and commercial paper issued   15 13
Unused capacity   $ 85  
Maximum percentage of debt to total capitalization allowed under the credit facility   70.00%  
PPL Electric [Member]      
Financing Activities [Line Items]      
Capacity   $ 650  
Borrowed   0 0
Letters of credit and commercial paper issued   1 511
Unused capacity   649  
PPL Electric [Member] | Commercial Paper [Member]      
Financing Activities [Line Items]      
Commercial paper issuances   0 510
PPL Electric [Member] | Syndicated Credit Facility [Member]      
Financing Activities [Line Items]      
Capacity   650  
Borrowed   0 0
Letters of credit and commercial paper issued   1 511
Unused capacity   $ 649  
Maximum percentage of debt to total capitalization allowed under the credit facility   70.00%  
Potential capacity increase   $ 250  
PPL Electric [Member] | Syndicated Credit Facility [Member] | Subsequent Event [Member]      
Financing Activities [Line Items]      
Capacity 750    
PPL Electric [Member] | Term Loan Credit Facility [Member]      
Financing Activities [Line Items]      
Maximum percentage of debt to total capitalization allowed under the credit facility   70.00%  
LGE [Member]      
Financing Activities [Line Items]      
Capacity   $ 500  
Borrowed   0 0
Letters of credit and commercial paper issued   25 0
Unused capacity   475  
LGE [Member] | Commercial Paper [Member]      
Financing Activities [Line Items]      
Commercial paper issuances   25 0
LGE [Member] | Syndicated Credit Facility [Member]      
Financing Activities [Line Items]      
Capacity   500  
Borrowed   0 0
Letters of credit and commercial paper issued   25 0
Unused capacity   $ 475  
Maximum percentage of debt to total capitalization allowed under the credit facility   70.00%  
Potential capacity increase   $ 250  
LGE [Member] | Syndicated Credit Facility [Member] | Subsequent Event [Member]      
Financing Activities [Line Items]      
Capacity 600    
LGE [Member] | Term Loan Credit Facility [Member]      
Financing Activities [Line Items]      
Maximum percentage of debt to total capitalization allowed under the credit facility   70.00%  
KU [Member]      
Financing Activities [Line Items]      
Capacity   $ 400  
Borrowed   0 0
Letters of credit and commercial paper issued   140 93
Unused capacity   260  
KU [Member] | Commercial Paper [Member]      
Financing Activities [Line Items]      
Commercial paper issuances   140 93
KU [Member] | Syndicated Credit Facility [Member]      
Financing Activities [Line Items]      
Capacity   400  
Borrowed   0 0
Letters of credit and commercial paper issued   140 93
Unused capacity   $ 260  
Maximum percentage of debt to total capitalization allowed under the credit facility   70.00%  
Potential capacity increase   $ 250  
KU [Member] | Syndicated Credit Facility [Member] | Subsequent Event [Member]      
Financing Activities [Line Items]      
Capacity 600    
KU [Member] | Term Loan Credit Facility [Member]      
Financing Activities [Line Items]      
Maximum percentage of debt to total capitalization allowed under the credit facility   70.00%  
Rhode Island Energy | Commercial Paper [Member]      
Financing Activities [Line Items]      
Commercial paper issuances   $ 0 25
Rhode Island Energy | Syndicated Credit Facility [Member]      
Financing Activities [Line Items]      
Line of Credit Facility, Borrowing Capacity Sublimit   250 250
Rhode Island Energy | Syndicated Credit Facility [Member] | Commercial Paper [Member]      
Financing Activities [Line Items]      
Commercial paper issuances   0 25
PPL Electric Utilities Corp [Member]      
Financing Activities [Line Items]      
Capacity   650  
Borrowed   0 0
Letters of credit and commercial paper issued   1 511
Unused capacity   649  
PPL Electric Utilities Corp [Member] | Commercial Paper [Member]      
Financing Activities [Line Items]      
Commercial paper issuances   0 510
PPL Electric Utilities Corp [Member] | Syndicated Credit Facility [Member]      
Financing Activities [Line Items]      
Capacity   650  
Borrowed   0 0
Letters of credit and commercial paper issued   1 511
Unused capacity   $ 649  
Maximum percentage of debt to total capitalization allowed under the credit facility   70.00%  
Potential capacity increase   $ 250  
PPL Electric Utilities Corp [Member] | Syndicated Credit Facility [Member] | Subsequent Event [Member]      
Financing Activities [Line Items]      
Capacity 750    
PPL Electric Utilities Corp [Member] | Term Loan Credit Facility [Member]      
Financing Activities [Line Items]      
Maximum percentage of debt to total capitalization allowed under the credit facility   70.00%  
Louisville Gas And Electric Co [Member]      
Financing Activities [Line Items]      
Capacity   $ 500  
Borrowed   0 0
Letters of credit and commercial paper issued   25 0
Unused capacity   475  
Louisville Gas And Electric Co [Member] | Commercial Paper [Member]      
Financing Activities [Line Items]      
Commercial paper issuances   25 0
Louisville Gas And Electric Co [Member] | Syndicated Credit Facility [Member]      
Financing Activities [Line Items]      
Capacity   500  
Borrowed   0 0
Letters of credit and commercial paper issued   25 0
Unused capacity   $ 475  
Maximum percentage of debt to total capitalization allowed under the credit facility   70.00%  
Potential capacity increase   $ 250  
Louisville Gas And Electric Co [Member] | Syndicated Credit Facility [Member] | Subsequent Event [Member]      
Financing Activities [Line Items]      
Capacity 600    
Louisville Gas And Electric Co [Member] | Term Loan Credit Facility [Member]      
Financing Activities [Line Items]      
Maximum percentage of debt to total capitalization allowed under the credit facility   70.00%  
Kentucky Utilities Co [Member]      
Financing Activities [Line Items]      
Capacity   $ 400  
Borrowed   0 0
Letters of credit and commercial paper issued   140 93
Unused capacity   260  
Kentucky Utilities Co [Member] | Commercial Paper [Member]      
Financing Activities [Line Items]      
Commercial paper issuances   140 93
Kentucky Utilities Co [Member] | Syndicated Credit Facility [Member]      
Financing Activities [Line Items]      
Capacity   400  
Borrowed   0 0
Letters of credit and commercial paper issued   140 $ 93
Unused capacity   $ 260  
Maximum percentage of debt to total capitalization allowed under the credit facility   70.00%  
Potential capacity increase   $ 250  
Kentucky Utilities Co [Member] | Syndicated Credit Facility [Member] | Subsequent Event [Member]      
Financing Activities [Line Items]      
Capacity $ 600    
Kentucky Utilities Co [Member] | Term Loan Credit Facility [Member]      
Financing Activities [Line Items]      
Maximum percentage of debt to total capitalization allowed under the credit facility   70.00%