Consolidated Statements of Changes in Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Increase (decrease) in Stockholders' Equity
Beginning balance	$ 17,944	$ 17,522
Net income	52	365
Other comprehensive income		2
Common stock issued	11	15
Common stock dividends declared	(300)	(282)
Preferred stock dividend declared	(44)	(52)
Dividends to noncontrolling interests	(41)	(29)
Noncash stock-based compensation	12	8
Preferred stock repurchased	(19)
Ending Balance	$ 17,615	$ 17,549
Dividends declared per common share (in dollars per share)	$ 0.78	$ 0.7375
Series A
Increase (decrease) in Stockholders' Equity
Preferred stock dividends (in dollars per share)	26.875	26.875
Series B
Increase (decrease) in Stockholders' Equity
Preferred stock dividends (in dollars per share)	$ 25.00	$ 25.00
Preferred stock
Increase (decrease) in Stockholders' Equity
Beginning balance	$ 1,673	$ 1,978
Preferred stock repurchased	(19)
Ending Balance	1,654	1,978
Common Stock, Including APIC
Increase (decrease) in Stockholders' Equity
Beginning balance	6,338	6,200
Common stock issued	11	15
Noncash stock-based compensation	12	8
Ending Balance	6,361	6,223
Accumulated Other Comprehensive Loss
Increase (decrease) in Stockholders' Equity
Beginning balance	(9)	(11)
Other comprehensive income		2
Ending Balance	(9)	(9)
Retained Earnings
Increase (decrease) in Stockholders' Equity
Beginning balance	7,499	7,454
Net income	11	336
Common stock dividends declared	(300)	(282)
Preferred stock dividend declared	(44)	(52)
Ending Balance	7,166	7,456
Equity Attributable to Common Shareholders
Increase (decrease) in Stockholders' Equity
Beginning balance	15,501	15,621
Net income	11	336
Other comprehensive income		2
Common stock issued	11	15
Common stock dividends declared	(300)	(282)
Preferred stock dividend declared	(44)	(52)
Noncash stock-based compensation	12	8
Preferred stock repurchased	(19)
Ending Balance	15,172	15,648
Noncontrolling Interest
Increase (decrease) in Stockholders' Equity
Beginning balance	2,443	1,901
Net income	41	29
Dividends to noncontrolling interests	(41)	(29)
Ending Balance	$ 2,443	$ 1,901
Noncontrolling Interest | Minimum
Increase (decrease) in Stockholders' Equity
Preferred stock dividends (in dollars per share)	$ 24.418	$ 22.281
Noncontrolling Interest | Maximum
Increase (decrease) in Stockholders' Equity
Preferred stock dividends (in dollars per share)	$ 58.854	$ 35.937
SCE
Increase (decrease) in Stockholders' Equity
Beginning balance	$ 21,404	$ 20,789
Net income	106	399
Other comprehensive income	1
Common stock dividends declared	(360)	(350)
Preferred stock dividend declared	(41)	(29)
Stock-based compensation	(20)	(8)
Noncash stock-based compensation	7	6
Ending Balance	$ 21,097	$ 20,807
Dividends declared per common share (in dollars per share)	$ 0.8278	$ 0.8048
SCE | Minimum
Increase (decrease) in Stockholders' Equity
Preferred stock dividends (in dollars per share)	24.418	22.281
SCE | Maximum
Increase (decrease) in Stockholders' Equity
Preferred stock dividends (in dollars per share)	$ 58.854	$ 35.937
SCE | Preferred stock
Increase (decrease) in Stockholders' Equity
Beginning balance	$ 2,495	$ 1,945
Ending Balance	2,495	1,945
SCE | Common stock
Increase (decrease) in Stockholders' Equity
Beginning balance	2,168	2,168
Ending Balance	2,168	2,168
SCE | Additional Paid-in Capital
Increase (decrease) in Stockholders' Equity
Beginning balance	8,446	8,441
Stock-based compensation	(20)	(8)
Noncash stock-based compensation	7	5
Ending Balance	8,433	8,438
SCE | Accumulated Other Comprehensive Loss
Increase (decrease) in Stockholders' Equity
Beginning balance	(12)	(8)
Other comprehensive income	1
Ending Balance	(11)	(8)
SCE | Retained Earnings
Increase (decrease) in Stockholders' Equity
Beginning balance	8,307	8,243
Net income	106	399
Common stock dividends declared	(360)	(350)
Preferred stock dividend declared	(41)	(29)
Noncash stock-based compensation		1
Ending Balance	$ 8,012	$ 8,264