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Financing Activities - Long-term Debt (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Dec. 31, 2025
Nov. 30, 2025
Aug. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Debt Instrument [Line Items]          
Principal outstanding $ 19,089     $ 19,089  
Long-Term Debt, Gross, before Affiliate Repurchase Adjustments 19,173     19,173 $ 16,674
Total Long-term Debt, repurchased affiliate bonds (84)     (84) 0
Unamortized premium and (discount), net (58)     (58) (57)
Unamortized debt issuance costs (137)     (137) (114)
Total Long-term Debt 18,894     18,894 16,503
Less current portion of Long-term debt 904     904 551
Long-term Debt 17,990     17,990 15,952
Aggregate maturities of long-term debt (Details) [Abstract]          
2022 904     904  
2023 428     428  
2024 1,350     1,350  
2025 116     116  
2026 2,181     2,181  
Thereafter 14,110     14,110  
Loss on Extinguishment of Debt 18        
Debt Instrument, Repurchase Amount 84     84  
PPL Electric [Member]          
Aggregate maturities of long-term debt (Details) [Abstract]          
Debt Instrument, Repurchase Amount 36     36  
LGE [Member]          
Aggregate maturities of long-term debt (Details) [Abstract]          
Debt Instrument, Repurchase Amount 8     8  
KU [Member]          
Aggregate maturities of long-term debt (Details) [Abstract]          
Debt Instrument, Repurchase Amount $ 40     $ 40  
Senior Unsecured Notes [Member]          
Debt Instrument [Line Items]          
Weighted-Average Rate 4.34%     4.34%  
Principal outstanding $ 4,316     $ 4,316 4,316
Senior Secured Notes - First Mortgage Bonds [Member]          
Debt Instrument [Line Items]          
Weighted-Average Rate 4.64%     4.64%  
Principal outstanding $ 12,227     $ 12,227 10,878
Junior Subordinated Notes [Member]          
Debt Instrument [Line Items]          
Weighted-Average Rate 6.61%     6.61%  
Principal outstanding $ 480     $ 480 480
First Mortgage Bonds [Member] | Tax Exempt Revenue Bonds [Member]          
Long-term Debt (Numeric) [Abstract]          
Aggregate amount of tax-exempt revenue bonds in a term rate mode $ 894     $ 894  
Exchangeable Senior Unsecured Notes          
Debt Instrument [Line Items]          
Weighted-Average Rate 2.94%     2.94%  
Principal outstanding $ 2,150     $ 2,150 1,000
Exchangeable Senior Unsecured Notes | Exchangeable Senior Notes Due 2030          
Long-term Debt (Numeric) [Abstract]          
Principal amount   $ 1,150      
Stated interest rate   3.00%      
Aggregate maturities of long-term debt (Details) [Abstract]          
Exchangeable Senior Notes Initial Exchange Rate, Dollars per Share   $ 42.66      
Exchangeable Senior Notes Initial Exchange Rate, Shares per $1000 Principal Amount   23.44      
Proceeds from Convertible Debt   $ 1,140      
PPL Capital Funding [Member]          
Aggregate maturities of long-term debt (Details) [Abstract]          
Capacity 1,700     1,700  
PPL Electric [Member]          
Aggregate maturities of long-term debt (Details) [Abstract]          
Capacity 750     750  
PPL Electric [Member] | Senior Secured Notes - First Mortgage Bonds [Member] | Mortgage Indenture [Member]          
Long-term Debt (Numeric) [Abstract]          
Aggregate carrying value of property subject to lien 14,600     14,600 13,300
PPL Electric [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2055          
Long-term Debt (Numeric) [Abstract]          
Principal amount     $ 500    
Stated interest rate     5.55%    
Aggregate maturities of long-term debt (Details) [Abstract]          
Proceeds from Issuance of First Mortgage Bond     $ 491    
LGE [Member]          
Aggregate maturities of long-term debt (Details) [Abstract]          
Capacity 600     600  
LGE [Member] | First Mortgage Bonds [Member] | 2010 Mortgage Indenture [Member]          
Long-term Debt (Numeric) [Abstract]          
Aggregate carrying value of property subject to lien 6,400     $ 6,400 6,000
LGE [Member] | First Mortgage Bonds [Member] | Tax Exempt Revenue Bonds [Member]          
Long-term Debt (Numeric) [Abstract]          
Minimum length of time to convert interest rate mode       1 year  
Aggregate amount of tax-exempt revenue bonds in a variable rate mode 66     $ 66  
LGE [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2055          
Long-term Debt (Numeric) [Abstract]          
Principal amount     $ 700    
Stated interest rate     5.85%    
Aggregate maturities of long-term debt (Details) [Abstract]          
Proceeds from Issuance of First Mortgage Bond     $ 694    
KU [Member]          
Aggregate maturities of long-term debt (Details) [Abstract]          
Capacity 600     600  
KU [Member] | First Mortgage Bonds [Member] | 2010 Mortgage Indenture [Member]          
Long-term Debt (Numeric) [Abstract]          
Aggregate carrying value of property subject to lien 8,000     $ 8,000 7,500
KU [Member] | First Mortgage Bonds [Member] | Tax Exempt Revenue Bonds [Member]          
Long-term Debt (Numeric) [Abstract]          
Minimum length of time to convert interest rate mode       1 year  
Aggregate amount of tax-exempt revenue bonds in a variable rate mode 33     $ 33  
KU [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2055          
Long-term Debt (Numeric) [Abstract]          
Principal amount     $ 700    
Stated interest rate     5.85%    
Aggregate maturities of long-term debt (Details) [Abstract]          
Proceeds from Issuance of First Mortgage Bond     $ 694    
PPL Electric Utilities Corp [Member]          
Debt Instrument [Line Items]          
Principal outstanding 5,799     5,799 5,299
Unamortized discount (45)     (45) (42)
Unamortized debt issuance costs (47)     (47) (43)
Total Long-term Debt 5,707     5,707 5,214
Less current portion of Long-term debt 0     0 0
Long-term Debt 5,707     5,707 5,214
Aggregate maturities of long-term debt (Details) [Abstract]          
2022 0     0  
2023 108     108  
2024 0     0  
2025 116     116  
2026 0     0  
Thereafter 5,575     5,575  
Capacity $ 750     $ 750  
PPL Electric Utilities Corp [Member] | Senior Secured Notes - First Mortgage Bonds [Member]          
Debt Instrument [Line Items]          
Weighted-Average Rate 4.72%     4.72%  
Principal outstanding $ 5,799     $ 5,799 5,299
PPL Electric Utilities Corp [Member] | Senior Secured Notes - First Mortgage Bonds [Member] | Mortgage Indenture [Member]          
Long-term Debt (Numeric) [Abstract]          
Aggregate carrying value of property subject to lien 14,600     14,600 13,300
PPL Electric Utilities Corp [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2055          
Long-term Debt (Numeric) [Abstract]          
Principal amount     $ 500    
Stated interest rate     5.55%    
Aggregate maturities of long-term debt (Details) [Abstract]          
Proceeds from Issuance of First Mortgage Bond     $ 491    
Louisville Gas And Electric Co [Member]          
Debt Instrument [Line Items]          
Principal outstanding 2,889     2,889 2,489
Unamortized discount (4)     (4) (4)
Unamortized debt issuance costs (20)     (20) (14)
Total Long-term Debt 2,865     2,865 2,471
Less current portion of Long-term debt 90     90 300
Long-term Debt 2,775     2,775 2,171
Aggregate maturities of long-term debt (Details) [Abstract]          
2022 90     90  
2023 260     260  
2024 0     0  
2025 0     0  
2026 0     0  
Thereafter 2,539     2,539  
Capacity $ 600     $ 600  
Louisville Gas And Electric Co [Member] | First Mortgage Bonds [Member]          
Debt Instrument [Line Items]          
Weighted-Average Rate 4.52%     4.52%  
Principal outstanding $ 2,889     $ 2,889 2,489
Louisville Gas And Electric Co [Member] | First Mortgage Bonds [Member] | 2010 Mortgage Indenture [Member]          
Long-term Debt (Numeric) [Abstract]          
Aggregate carrying value of property subject to lien 6,400     $ 6,400 6,000
Louisville Gas And Electric Co [Member] | First Mortgage Bonds [Member] | Tax Exempt Revenue Bonds [Member]          
Long-term Debt (Numeric) [Abstract]          
Minimum length of time to convert interest rate mode       1 year  
Aggregate amount of tax-exempt revenue bonds in a term rate mode 538     $ 538  
Aggregate amount of tax-exempt revenue bonds in a variable rate mode 66     66  
Louisville Gas And Electric Co [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2055          
Long-term Debt (Numeric) [Abstract]          
Principal amount     $ 700    
Stated interest rate     5.85%    
Aggregate maturities of long-term debt (Details) [Abstract]          
Proceeds from Issuance of First Mortgage Bond     $ 694    
Kentucky Utilities Co [Member]          
Debt Instrument [Line Items]          
Principal outstanding 3,539     3,539 3,089
Debt Instrument, Unamortized Premium 4     4 4
Unamortized discount (8)     (8) (8)
Unamortized debt issuance costs (25)     (25) (19)
Total Long-term Debt 3,510     3,510 3,066
Less current portion of Long-term debt 164     164 250
Long-term Debt 3,346     3,346 2,816
Aggregate maturities of long-term debt (Details) [Abstract]          
2022 164     164  
2023 60     60  
2024 0     0  
2025 0     0  
2026 0     0  
Thereafter 3,315     3,315  
Capacity $ 600     $ 600  
Kentucky Utilities Co [Member] | First Mortgage Bonds [Member]          
Debt Instrument [Line Items]          
Weighted-Average Rate 4.60%     4.60%  
Principal outstanding $ 3,539     $ 3,539 3,089
Kentucky Utilities Co [Member] | First Mortgage Bonds [Member] | 2010 Mortgage Indenture [Member]          
Long-term Debt (Numeric) [Abstract]          
Aggregate carrying value of property subject to lien 8,000     $ 8,000 $ 7,500
Kentucky Utilities Co [Member] | First Mortgage Bonds [Member] | Tax Exempt Revenue Bonds [Member]          
Long-term Debt (Numeric) [Abstract]          
Minimum length of time to convert interest rate mode       1 year  
Aggregate amount of tax-exempt revenue bonds in a term rate mode 356     $ 356  
Aggregate amount of tax-exempt revenue bonds in a variable rate mode 33     33  
Kentucky Utilities Co [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2055          
Long-term Debt (Numeric) [Abstract]          
Principal amount     $ 700    
Stated interest rate     5.85%    
Aggregate maturities of long-term debt (Details) [Abstract]          
Proceeds from Issuance of First Mortgage Bond     $ 694    
PPL Capital Funding [Member]          
Aggregate maturities of long-term debt (Details) [Abstract]          
Debt Instrument, Repurchase Amount $ 84     $ 84