Compensation and Benefit Plans (Employee Savings Plan) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Contribution Plans [Line Items]
Employer contributions	$ 103	$ 97	$ 93
SCE
Defined Contribution Plans [Line Items]
Employer contributions	$ 101	$ 96	$ 92