Revenue (Summary) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue
Total operating revenue	$ 17,220	$ 14,905	$ 13,578
SCE
Revenue
Revenue from contracts with customers	16,760	14,347	12,459
Alternative revenue programs and other operating revenue	412	527	1,087
Total operating revenue	17,172	14,874	13,546
Receivables from contracts with customers	2,300	2,300
Accrued unbilled revenues	638	794
SCE | Earning Activities
Revenue
Revenue from contracts with customers	8,327	7,523	6,920
Alternative revenue programs and other operating revenue	681	349	548
Total operating revenue	9,008	7,872	7,468
SCE | Cost- Recovery Activities
Revenue
Revenue from contracts with customers	8,433	6,824	5,539
Alternative revenue programs and other operating revenue	(269)	178	539
Total operating revenue	$ 8,164	$ 7,002	$ 6,078