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Condensed Consolidated Statements of Changes in Equity - SCE (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024
Increase (decrease) in Stockholders' Equity
Beginning balance			$ 15,565				$ 15,565
Net income	$ 832			$ 516			2,611	$ 944
Other comprehensive income	0	$ 2		2	$ 1		2	3
Dividends declared on common stock	(318)	(318)	(319)	(302)	(301)	$ (300)
Dividends declared on preference stock	(44)		(44)	(44)		(44)
Noncash stock-based compensation	13	$ 15	$ 10	$ 14	15	$ 12
Preference stock issued					345
Preference stock redeemed					$ (350)
Ending Balance	$ 17,155						17,155
Dividends declared on common stock (in dollars per share)	$ 0.8275	$ 0.8275	$ 0.8275	$ 0.78	$ 0.78	$ 0.78
SCE
Increase (decrease) in Stockholders' Equity
Beginning balance	$ 22,395	$ 22,875	$ 21,751	$ 21,262	$ 21,097	$ 21,404	21,751	21,404
Net income	959	476	1,601	641	572	106	3,036	1,319
Other comprehensive income	0	1		1		1	1	2
Dividends declared on common stock	(430)	(930)	(430)	(360)	(360)	(360)
Dividends declared on preference stock	(69)	(33)	(34)	(72)	(43)	(41)
Stock-based compensation			(20)	(7)	(6)	(20)
Noncash stock-based compensation	6	6	7	9	7	7
Preference stock issued					345
Preference stock redeemed					(350)
Ending Balance	$ 22,861	$ 22,395	$ 22,875	$ 21,474	$ 21,262	$ 21,097	22,861	21,474
Dividends declared on common stock (in dollars per share)	$ 0.9888	$ 2.1385	$ 0.9888	$ 0.8278	$ 0.8278	$ 0.8278
SCE | Minimum
Increase (decrease) in Stockholders' Equity
Dividends declared on preference stock (in dollars per share)	62.50	31.250	31.250	31.25	17.927	24.418
SCE | Maximum
Increase (decrease) in Stockholders' Equity
Dividends declared on preference stock (in dollars per share)	$ 93.75	$ 46.875	$ 46.875	$ 51.8084	$ 54.8223	$ 58.854
Preferred Stock | SCE
Increase (decrease) in Stockholders' Equity
Beginning balance	$ 2,220	$ 2,220	$ 2,220	$ 2,495	$ 2,495	$ 2,495	2,220	2,495
Preference stock issued					350
Preference stock redeemed					(350)
Ending Balance	2,220	2,220	2,220	2,495	2,495	2,495	2,220	2,495
Common Stock
Increase (decrease) in Stockholders' Equity
Noncash stock-based compensation	14	15	10	13	14	12
Common Stock | SCE
Increase (decrease) in Stockholders' Equity
Beginning balance	2,168	2,168	2,168	2,168	2,168	2,168	2,168	2,168
Ending Balance	2,168	2,168	2,168	2,168	2,168	2,168	2,168	2,168
Additional Paid-in Capital | SCE
Increase (decrease) in Stockholders' Equity
Beginning balance	8,943	8,936	8,950	8,435	8,433	8,446	8,950	8,446
Stock-based compensation			(21)	(7)	(6)	(20)
Noncash stock-based compensation	6	7	7	8	7	7
Preference stock issued					(5)
Preference stock redeemed					6
Ending Balance	8,949	8,943	8,936	8,436	8,435	8,433	8,949	8,436
Accumulated Other Comprehensive Loss
Increase (decrease) in Stockholders' Equity
Other comprehensive income		2		2	1
Accumulated Other Comprehensive Loss | SCE
Increase (decrease) in Stockholders' Equity
Beginning balance	(8)	(9)	(9)	(11)	(11)	(12)	(9)	(12)
Other comprehensive income		1		1		1
Ending Balance	(8)	(8)	(9)	(10)	(11)	(11)	(8)	(10)
Retained Earnings
Increase (decrease) in Stockholders' Equity
Dividends declared on common stock	(318)	(318)	(319)	(302)	(301)	(300)
Dividends declared on preference stock	(44)		(44)	(44)		(44)
Noncash stock-based compensation	(1)			1	1
Retained Earnings | SCE
Increase (decrease) in Stockholders' Equity
Beginning balance	9,072	9,560	8,422	8,175	8,012	8,307	8,422	8,307
Net income	959	476	1,601	641	572	106
Dividends declared on common stock	(430)	(930)	(430)	(360)	(360)	(360)
Dividends declared on preference stock	(69)	(33)	(34)	(72)	(43)	(41)
Stock-based compensation			1
Noncash stock-based compensation	0	(1)		1
Preference stock redeemed					(6)
Ending Balance	$ 9,532	$ 9,072	$ 9,560	$ 8,385	$ 8,175	$ 8,012	$ 9,532	$ 8,385

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