v3.25.2
Compensation and Benefit Plans (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Pension Plans        
Pension and Other Postretirement Benefits        
Service cost $ 23 $ 24 $ 46 $ 48
Non-service cost (benefit)        
Interest cost 48 44 96 88
Expected return on plan assets (58) (59) (116) (118)
Amortization of net loss (gain) 1 1 1 2
Regulatory adjustment (8) (5) (15) (10)
Total non-service benefit (17) (19) (34) (38)
Total expense 6 5 12 10
Postretirement Benefits Other Than Pensions ("PBOP")        
Pension and Other Postretirement Benefits        
Service cost 3 3 6 6
Non-service cost (benefit)        
Interest cost 10 9 20 18
Expected return on plan assets (27) (28) (54) (56)
Amortization of net loss (gain) (20) (24) (40) (48)
Regulatory adjustment 34 40 68 80
Total non-service benefit (3) (3) (6) (6)
Total expense 0 0 0 0
SCE        
Non-service cost (benefit)        
Total non-service benefit (21) (22) (42) (44)
SCE | Pension Plans        
Pension and Other Postretirement Benefits        
Service cost 23 24 46 48
Non-service cost (benefit)        
Interest cost 45 41 89 81
Expected return on plan assets (55) (55) (110) (110)
Amortization of net loss (gain) 0 0 0 1
Regulatory adjustment (8) (5) (15) (10)
Total non-service benefit (18) (19) (36) (38)
Total expense $ 5 $ 5 $ 10 $ 10