Compensation and Benefit Plans (Options Data) (Details) - Employee Stock Option [Member] - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation
Weighted average grant date fair value per option granted (in dollars per share)	$ 12.69	$ 9.92	$ 7.26
Fair value of options vested	$ 8	$ 8	$ 3
Value of options exercised	$ 14	$ 17	$ 8
SCE
Share-based Compensation
Weighted average grant date fair value per option granted (in dollars per share)	$ 12.71	$ 9.92	$ 7.30
Fair value of options vested	$ 7	$ 5	$ 3
Value of options exercised	$ 11	$ 12	$ 6