Compensation and Benefit Plans - Options Data (Details) - Stock options - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation
Weighted average grant date fair value per option granted (in dollars per share)	$ 13.32	$ 12.69	$ 9.92
Fair value of options vested	$ 14	$ 8	$ 8
Value of options exercised	$ 45	$ 14	$ 17
SCE
Share-based Compensation
Weighted average grant date fair value per option granted (in dollars per share)	$ 13.36	$ 12.71	$ 9.92
Fair value of options vested	$ 7	$ 7	$ 5
Value of options exercised	$ 25	$ 11	$ 12