Condensed Consolidated Statements of Changes in Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Increase (decrease) in Stockholders' Equity
Beginning balance	$ 15,565
Beginning balance	17,740	$ 17,944
Net income	1,492	52
Net income	1,436	(11)
Other comprehensive income	0	0
Common stock issued	2	11
Common/Preferred stock repurchased	(29)	(19)
Common stock dividends declared	(319)	(300)
Preferred stock dividend declared	(44)	(44)
Dividends to noncontrolling interests	(34)	(41)
Shares withheld for tax withholdings on vested equity awards	(21)
Noncash stock-based compensation	10	12
Ending balance	18,797	$ 17,615
Ending balance	$ 16,622
Dividends declared per common share (in dollars per share)	$ 0.8275	$ 0.78
Series A Preferred Stock
Increase (decrease) in Stockholders' Equity
Preferred stock dividends (in dollars per share)	26.875	26.875
Series B Preferred Stock
Increase (decrease) in Stockholders' Equity
Preferred stock dividends (in dollars per share)	$ 25.00	$ 25.00
Parent
Increase (decrease) in Stockholders' Equity
Beginning balance	$ 15,565	$ 15,501
Net income	1,458	11
Common stock issued	2	11
Common/Preferred stock repurchased	(29)	(19)
Common stock dividends declared	(319)	(300)
Preferred stock dividend declared	(44)	(44)
Shares withheld for tax withholdings on vested equity awards	(21)
Noncash stock-based compensation	10	12
Ending balance	16,622	15,172
Preferred Stock
Increase (decrease) in Stockholders' Equity
Beginning balance	1,645	1,673
Common/Preferred stock repurchased		(19)
Ending balance	1,645	1,654
Common Stock
Increase (decrease) in Stockholders' Equity
Beginning balance	6,353	6,338
Common stock issued	2	11
Common/Preferred stock repurchased	(29)
Shares withheld for tax withholdings on vested equity awards	(21)
Noncash stock-based compensation	10	12
Ending balance	6,315	6,361
Accumulated Other Comprehensive Loss
Increase (decrease) in Stockholders' Equity
Beginning balance	0	(9)
Ending balance	0	(9)
Retained Earnings
Increase (decrease) in Stockholders' Equity
Beginning balance	7,567	7,499
Net income	1,458	11
Common stock dividends declared	(319)	(300)
Preferred stock dividend declared	(44)	(44)
Ending balance	8,662	7,166
Noncontrolling Interests
Increase (decrease) in Stockholders' Equity
Beginning balance	2,175	2,443
Net income	34	41
Dividends to noncontrolling interests	(34)	(41)
Ending balance	2,175	2,443
SCE
Increase (decrease) in Stockholders' Equity
Beginning balance	21,751	21,404
Net income	1,601	106
Other comprehensive income	0	1
Common stock dividends declared	(430)	(360)
Preferred stock dividend declared	(34)	(41)
Stock-based compensation	(20)	(20)
Noncash stock-based compensation	7	7
Ending balance	$ 22,875	$ 21,097
Dividends declared per common share (in dollars per share)	$ 0.9888	$ 0.8278
SCE | Minimum
Increase (decrease) in Stockholders' Equity
Preferred stock dividends (in dollars per share)	31.250	24.418
SCE | Maximum
Increase (decrease) in Stockholders' Equity
Preferred stock dividends (in dollars per share)	$ 46.875	$ 58.854
SCE | Preferred Stock
Increase (decrease) in Stockholders' Equity
Beginning balance	$ 2,220	$ 2,495
Ending balance	2,220	2,495
SCE | Common Stock
Increase (decrease) in Stockholders' Equity
Beginning balance	2,168	2,168
Ending balance	2,168	2,168
SCE | Accumulated Other Comprehensive Loss
Increase (decrease) in Stockholders' Equity
Beginning balance	(9)	(12)
Other comprehensive income		1
Ending balance	(9)	(11)
SCE | Retained Earnings
Increase (decrease) in Stockholders' Equity
Beginning balance	8,422	8,307
Net income	1,601	106
Common stock dividends declared	(430)	(360)
Preferred stock dividend declared	(34)	(41)
Stock-based compensation	1
Ending balance	9,560	8,012
SCE | Additional Paid-in Capital
Increase (decrease) in Stockholders' Equity
Beginning balance	8,950	8,446
Stock-based compensation	(21)	(20)
Noncash stock-based compensation	7	7
Ending balance	$ 8,936	$ 8,433