v3.26.3
Other Income (Expense) - net (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Other Income        
Defined benefit plans - non-service credits $ 6 $ 8 $ 18 $ 23
AFUDC - equity component 31 23 82 58
Miscellaneous (19) 2 (18) (4)
Other Expense        
Other Income (Expense) - net 22 39 104 90
Interest Income (Expense), Nonoperating, Net 4 6 22 13
PPL Electric Utilities Corp [Member]        
Other Income        
Defined benefit plans - non-service credits 1 4 4 11
AFUDC - equity component 11 8 30 23
Miscellaneous 1 2 5 2
Other Expense        
Other Income (Expense) - net 13 14 39 36
Louisville Gas And Electric Co [Member]        
Other Income        
Defined benefit plans - non-service credits 0 0 (1) 1
AFUDC - equity component 7 4 18 11
Miscellaneous 0 4 2 4
Other Expense        
Other Income (Expense) - net 7 8 19 16
Kentucky Utilities Co [Member]        
Other Income        
Defined benefit plans - non-service credits 1 1 2 4
AFUDC - equity component 8 6 21 14
Miscellaneous 1 2 0 1
Other Expense        
Other Income (Expense) - net $ 10 $ 9 $ 23 $ 19