v3.25.2
Defined Benefits (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Net Periodic Defined Benefit Costs Allocated to Subsidiary by Sponsor (Numeric) [Abstract]        
Defined benefit plans - funding     $ 7 $ 7
Pension Plan [Member] | U.S.        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost $ 8 $ 8 15 17
Interest cost 47 46 92 92
Expected return on plan assets (72) (75) (143) (150)
Amortization of: [Abstract]        
Prior service cost 0 0 0 1
Actuarial loss 4 3 9 5
Net periodic defined benefit costs (credits) (13) (18) (27) (35)
Other Postretirement Benefits Plan [Member]        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost 2 2 3 3
Interest cost 8 7 15 14
Expected return on plan assets (8) (8) (15) (15)
Amortization of: [Abstract]        
Prior service cost 0 1 0 1
Actuarial loss (1) (2) (2) (3)
Net periodic defined benefit costs (credits) $ 1 $ 0 1 0
PPL Electric Utilities Corp [Member]        
Net Periodic Defined Benefit Costs Allocated to Subsidiary by Sponsor (Numeric) [Abstract]        
Defined benefit plans - funding     $ 0 $ 1