v3.26.1
Investments - Schedule of Gains and Losses for the Trust Investments (Details) - SCE - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Investments    
Gross realized gains $ 10 $ 24
Gross realized losses (3) (1)
Net unrealized losses for equity securities $ (63) $ (60)