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Other Income (Expense) - net (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Other Income [Line Items]      
Defined benefit plans - non-service credits $ 59 $ 42 $ 40
Interest Income (Expense), Nonoperating 20 33 32
Allowance for funds used during construction - equity component 81 47 30
Other Expense [Line Items]      
Miscellaneous (9) (6) (18)
Other Income (Expense) - net 151 114 (40)
Income (Expense) Related to Talen Litigation 0 (2) (124)
PPL Electric Utilities Corp [Member]      
Other Income [Line Items]      
Defined benefit plans - non-service credits 14 17 20
Interest Income (Expense), Nonoperating 8 8 8
Allowance for funds used during construction - equity component 30 23 16
Other Expense [Line Items]      
Miscellaneous (4) (3) (5)
Other Income (Expense) - net 48 45 39
LOUISVILLE GAS And ELECTRIC CO [Member]      
Other Income [Line Items]      
Defined benefit plans - non-service credits 3 3 0
Allowance for funds used during construction - equity component 16 8 3
Other Expense [Line Items]      
Miscellaneous 5 1 0
Other Income (Expense) - net 24 12 3
Kentucky Utilities Co [Member]      
Other Income [Line Items]      
Defined benefit plans - non-service credits 7 8 6
Allowance for funds used during construction - equity component 21 9 3
Other Expense [Line Items]      
Miscellaneous 1 (2) (1)
Other Income (Expense) - net $ 29 $ 15 $ 8