Consolidated Statements of Changes in Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 17,522	$ 17,789
Net (loss) income	365	136
Other comprehensive income	2	2
Common stock issued, net of issuance cost	15	12
Common stock dividends declared	(282)	(267)
Preferred stock dividend declared	(52)	(21)
Dividends to noncontrolling interests	(29)	(26)
Noncash stock-based compensation	8	7
Ending Balance	$ 17,549	$ 17,632
Dividends declared per common share (in dollars per share)	$ 0.7375	$ 0.7000
Series A
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock dividends (in dollars per share)	26.875	26.875
Series B
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock dividends (in dollars per share)	$ 25.00	$ 17.08333
Preferred stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 1,978	$ 1,977
Ending Balance	1,978	1,977
Common Stock, Including APIC
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	6,200	6,071
Common stock issued, net of issuance cost	15	12
Noncash stock-based compensation	8	7
Ending Balance	6,223	6,090
Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(11)	(54)
Other comprehensive income	2	2
Ending Balance	(9)	(52)
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	7,454	7,894
Net (loss) income	336	110
Common stock dividends declared	(282)	(267)
Preferred stock dividend declared	(52)	(21)
Ending Balance	7,456	7,716
Equity Attributable to Common Shareholders
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	15,621	15,888
Net (loss) income	336	110
Other comprehensive income	2	2
Common stock issued, net of issuance cost	15	12
Common stock dividends declared	(282)	(267)
Preferred stock dividend declared	(52)	(21)
Noncash stock-based compensation	8	7
Ending Balance	15,648	15,731
Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	1,901	1,901
Net (loss) income	29	26
Dividends to noncontrolling interests	(29)	(26)
Ending Balance	$ 1,901	$ 1,901
Noncontrolling Interest | Minimum
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock dividends (in dollars per share)	$ 22.281	$ 11.160
Noncontrolling Interest | Maximum
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock dividends (in dollars per share)	$ 35.937	$ 35.936
SCE
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 20,789	$ 19,835
Net (loss) income	399	173
Other comprehensive income		1
Common stock dividends declared	(350)	(325)
Preferred stock dividend declared	(29)	(26)
Stock-based compensation	(8)	(9)
Noncash stock-based compensation	6	3
Ending Balance	$ 20,807	$ 19,652
Dividends declared per common share (in dollars per share)	$ 0.8048	$ 0.7473
SCE | Minimum
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock dividends (in dollars per share)	22.281	11.160
SCE | Maximum
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock dividends (in dollars per share)	$ 35.937	$ 35.937
SCE | Preferred stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 1,945	$ 1,945
Ending Balance	1,945	1,945
SCE | Common stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	2,168	2,168
Ending Balance	2,168	2,168
SCE | Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	8,441	7,033
Stock-based compensation	(8)	(9)
Noncash stock-based compensation	5	4
Ending Balance	8,438	7,028
SCE | Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(8)	(32)
Other comprehensive income		1
Ending Balance	(8)	(31)
SCE | Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	8,243	8,721
Net (loss) income	399	173
Common stock dividends declared	(350)	(325)
Preferred stock dividend declared	(29)	(26)
Noncash stock-based compensation	1	(1)
Ending Balance	$ 8,264	$ 8,542