Revenue - Summary of SCE (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenue
Total operating revenue	$ 17,599	$ 16,338	$ 17,220
SCE
Revenue
Revenue from contracts with customers	18,395	17,020	16,760
Alternative revenue programs and other operating revenue	(848)	(745)	412
Total operating revenue	17,547	16,275	17,172
Receivables from contracts with customers	2,900	2,500
Accrued unbilled revenues	845	741
SCE | Commercial
Revenue
Revenue from contracts with customers	8,000	7,333	7,028
SCE | Residential
Revenue
Revenue from contracts with customers	7,060	6,421	6,707
SCE | Other
Revenue
Revenue from contracts with customers	$ 3,335	$ 3,266	$ 3,025