Leases (Other Information) (Details) - SCE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
PPA Operating Leases
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 580	$ 305	$ 111
Operating ROU assets obtained in exchange for lease obligations	$ 20	$ 1,084	$ 463
Weighted average remaining operating lease term (in years)	9 years 5 months 1 day	8 years 1 month 28 days	9 years 9 months
Operating leases weighted average discount rate	2.95%	2.43%	3.12%
Other operating leases
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 50	$ 45	$ 44
Operating ROU assets obtained in exchange for lease obligations	$ 76	$ 71	$ 58
Weighted average remaining operating lease term (in years)	10 years 4 months 17 days	11 years 1 month 20 days	12 years 1 month 17 days
Operating leases weighted average discount rate	3.78%	3.34%	3.63%