Equity (Preference) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Equity
Preferred / preference stock outstanding value				$ 1,645		$ 1,673
Preferred stock repurchased				378
Gain/loss on shares acquired				$ 1
Preferred Stock, Shares Authorized				50,000,000		50,000,000
Series A
Equity
Preferred Stock, Shares Outstanding				1,159,317		1,159,317
Preferred Stock, Shares Issued				1,159,317		1,159,317
Series B
Equity
Preferred Stock, Shares Outstanding				503,454		532,454
Preferred stock repurchased		$ 9	$ 19
Shares repurchased (in shares)		9,000	20,000
Average price shares acquired (in dollars per share)		$ 967	$ 952
SCE
Equity
Preferred / preference stock outstanding value				$ 2,495		$ 2,495
Preferred stock repurchased				$ 350	$ 0
SCE | Series E Preferred Stock
Equity
Preferred stock repurchased	$ 350
SCE | 6.95% Series N Preference Stock
Equity
Preferred / preference stock outstanding value	$ 350	$ 350
Preferred stock, dividend rate (as a percent)		6.95%
Preferred Stock, Shares Outstanding	140,004	140,004
Liquidation value (in dollars per share)	$ 2,500	$ 2,500