Income Taxes (Interest and Penalties) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Line Items]
Net after-tax interest and penalties tax (benefit) expense			$ (41)
SCE
Income Tax Disclosure [Line Items]
Accrued interest and penalties	$ 28	$ 23
Net after-tax interest and penalties tax (benefit) expense	$ 4	$ 2	$ (2)