v3.26.1
Other Income (Expense) - net (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Other Income        
Defined benefit plans - non-service credits $ 6 $ 7 $ 12 $ 15
AFUDC - equity component 28 20 52 35
Miscellaneous 0 (6) 0 (7)
Other Expense        
Other Income (Expense) - net 43 23 82 51
Interest Income (Expense), Nonoperating, Net 9 2 18 8
PPL Electric Utilities Corp [Member]        
Other Income        
Defined benefit plans - non-service credits 2 4 3 7
AFUDC - equity component 10 8 19 15
Miscellaneous 2 (1) 4 0
Other Expense        
Other Income (Expense) - net 14 11 26 22
Louisville Gas And Electric Co [Member]        
Other Income        
Defined benefit plans - non-service credits 0 1 (1) 1
AFUDC - equity component 6 4 11 7
Miscellaneous 0 0 2 0
Other Expense        
Other Income (Expense) - net 6 5 12 8
Kentucky Utilities Co [Member]        
Other Income        
Defined benefit plans - non-service credits 1 2 2 3
AFUDC - equity component 7 5 13 8
Miscellaneous (2) (2) (2) (1)
Other Expense        
Other Income (Expense) - net $ 6 $ 5 $ 13 $ 10