v3.26.1
Derivative Instruments - Schedule of Gains/(Losses) of Economic Hedging Activity (Details) - SCE - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]        
Realized $ (12) $ (3) $ (50) $ (43)
Unrealized $ (14) $ 35 $ (21) $ 11