Compensation and Benefit Plans (Option Activity) (Details) - Employee Stock Option [Member] $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) $ / shares shares
Stock Options
Beginning balance (in shares) | shares	11,883,556
Grants (in shares) | shares	766,167
Forfeited or expired (in shares) | shares	(129,716)
Exercised (in shares) | shares	(1,101,764)
Ending balance (in shares) | shares	11,418,243
Vested and expected to vest (in shares) | shares	11,183,196
Exercisable (in shares) | shares	8,642,764
Weighted Average Grant Date Fair Value
Beginning balance, weighted average exercise price (in dollars per share) | $ / shares	$ 63.64
Granted, weighted average exercise price (in dollars per share) | $ / shares	64.71
Forfeited or expired, weighted average exercise price (in dollars per share) | $ / shares	65.61
Exercised, weighted average exercise price (in dollars per share) | $ / shares	57.36
Ending balance, weighted average exercise price (in dollars per share) | $ / shares	64.30
Vested and expected to vest, weighted average exercise price (in dollars per share) | $ / shares	64.40
Exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 65.24
Outstanding, remaining contractual term	4 years 10 months 20 days
Vested and expected to vest, remaining contractual term	4 years 9 months 29 days
Exercisable, remaining contractual term	4 years 10 days
Vested and expected to vest, intrinsic value | $	$ 88
Exercisable, intrinsic value | $	63
Exercise of option, tax benefit | $	$ 4
SCE
Stock Options
Beginning balance (in shares) | shares	5,797,632
Grants (in shares) | shares	393,304
Forfeited or expired (in shares) | shares	(110,560)
Exercised (in shares) | shares	(857,922)
Transfers, net (in shares) | shares	(30,179)
Ending balance (in shares) | shares	5,192,275
Vested and expected to vest (in shares) | shares	5,072,830
Exercisable (in shares) | shares	3,808,466
Weighted Average Grant Date Fair Value
Beginning balance, weighted average exercise price (in dollars per share) | $ / shares	$ 63.31
Granted, weighted average exercise price (in dollars per share) | $ / shares	64.81
Forfeited or expired, weighted average exercise price (in dollars per share) | $ / shares	66.28
Exercised, weighted average exercise price (in dollars per share) | $ / shares	58.07
Affiliate transfers, net, weighted average grant date fair value (in dollars per share) | $ / shares	63.35
Ending balance, weighted average exercise price (in dollars per share) | $ / shares	64.22
Vested and expected to vest, weighted average exercise price (in dollars per share) | $ / shares	64.34
Exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 65.31
Outstanding, remaining contractual term	5 years 14 days
Vested and expected to vest, remaining contractual term	4 years 11 months 19 days
Exercisable, remaining contractual term	4 years 1 month 9 days
Vested and expected to vest, intrinsic value | $	$ 41
Exercisable, intrinsic value | $	28
Exercise of option, tax benefit | $	$ 3