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Revenue - Schedule of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Jun. 30, 2025	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Revenue from contracts with customers
Total operating revenue	$ 5,750	$ 5,201		$ 14,104	$ 13,615
SCE
Revenue from contracts with customers
Total revenue from contracts with customer	5,843	6,563		13,765	14,434
Alternative revenue program and other	(103)	(1,375)		309	(858)
Total operating revenue	5,740	5,188		14,074	13,576
Receivables from contracts with customers	3,200			3,200		$ 2,900
Accrued unbilled revenues	1,200			1,200		$ 845
SCE | General Rate Case 2025
Revenue from contracts with customers
Total revenue from contracts with customer			$ 418
SCE | Commercial
Revenue from contracts with customers
Total revenue from contracts with customer	2,558	2,731		5,980	6,132
SCE | Residential
Revenue from contracts with customers
Total revenue from contracts with customer	2,478	2,845		5,563	5,770
SCE | Other
Revenue from contracts with customers
Total revenue from contracts with customer	$ 807	$ 987		$ 2,222	$ 2,532

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