Leases - Other Information (Details) - SCE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
PPA operating leases
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 115	$ 503	$ 580
Operating ROU assets obtained in exchange for lease obligations	$ 11	$ 226	$ 20
Weighted average remaining operating lease term (in years)	12 years 6 months	13 years 4 months 13 days	9 years 5 months 1 day
Operating leases weighted average discount rate	4.30%	4.30%	2.95%
Other operating leases
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 62	$ 55	$ 50
Operating ROU assets obtained in exchange for lease obligations	$ 79	$ 69	$ 76
Weighted average remaining operating lease term (in years)	8 years 10 months 9 days	9 years 6 months 21 days	10 years 4 months 17 days
Operating leases weighted average discount rate	4.50%	4.22%	3.78%