Equity (Preferred and Preference) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended		12 Months Ended
	Dec. 31, 2023	Nov. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Feb. 22, 2024
Equity
Gain on shares acquired	$ 16
Redemption amount (in dollars per share)	$ 1,000		$ 1,000
Redemption amount following change in criteria (in dollars per share)	$ 1,020		$ 1,020
Preferred stock, shares authorized	50,000,000		50,000,000	50,000,000
Preference stocks summary
Dividends (in dollars per share)	$ 3.12	$ 2.95	$ 3.12		$ 0.78
Preferred / preference stock outstanding value	$ 1,673		$ 1,673	$ 1,978
Edison International's preference stock of utility	$ 2,443		$ 2,443	$ 1,901
Preferred stock
Equity
Liquidation value (in dollars per share)	$ 1,000		$ 1,000
Series A
Equity
Preferred stock, dividend rate, (as a percent)			5.375%
Shares repurchased	29,186	61,497
Average price shares acquired (in dollars per share)	$ 971	$ 925
Preferred stock current redemption amount	$ 28	$ 57	$ 28
Preferred stock, shares issued	1,159,317		1,159,317	1,250,000
Preference stocks summary
Preferred Stock, Shares Outstanding	1,159,317		1,159,317	1,250,000
Series B
Equity
Preferred stock, dividend rate, (as a percent)			5.00%
Shares repurchased	133,323	84,223
Average price shares acquired (in dollars per share)	$ 955	$ 904
Preferred stock current redemption amount	$ 127	$ 76	$ 127
Preferred stock, shares issued	532,454		532,454	750,000
Preference stocks summary
Preferred Stock, Shares Outstanding	532,454		532,454	750,000
SCE
Equity
Shares repurchased			0	0
Preference stocks summary
Preferred / preference stock outstanding value	$ 2,495		$ 2,495	$ 1,945
SCE | Preferred stock
Equity
Preferred stock, shares issued	0		0
Dividends in arrears preferred stock			$ 0
Preference stocks summary
Preferred Stock, Shares Outstanding	0		0	0
Preferred / preference stock outstanding value	$ 2,495		$ 2,495	$ 1,945
Less issuance costs			$ (52)	$ (44)
SCE | Cumulative preferred stock, $100 par value
Equity
Preferred stock, shares authorized	12,000,000		12,000,000
Preferred stock, par value (in dollars per share)	$ 100		$ 100
SCE | Cumulative preferred stock $25 par value
Equity
Preferred stock, shares authorized	24,000,000		24,000,000
Preferred stock, par value (in dollars per share)	$ 25		$ 25
SCE | No par value
Equity
Preferred stock, shares authorized	50,000,000		50,000,000
Preferred stock, par value (in dollars per share)	$ 0		$ 0
SCE | Series E Preferred Stock
Preference stocks summary
Preferred stock, variable dividend rate, (as a percent)			4.199%	4.199%
Preferred Stock, Shares Outstanding	350,000		350,000	350,000
Redemption price (in dollars per share)	$ 1,000.00		$ 1,000.00	$ 1,000.00
Dividends (in dollars per share)	$ 96.823		$ 96.823	$ 96.823
Preferred / preference stock outstanding value	$ 350		$ 350	$ 350
SCE | 5.10% Series G Preferred Stock
Equity
Preferred stock, dividend rate, (as a percent)			5.10%	5.10%
Preference stocks summary
Preferred Stock, Shares Outstanding	88,004		88,004	88,004
Redemption price (in dollars per share)	$ 2,500.00		$ 2,500.00	$ 2,500.00
Dividends (in dollars per share)	$ 127.500		$ 127.500	$ 127.500
Preferred / preference stock outstanding value	$ 220		$ 220	$ 220
SCE | 5.75% Series H Preferred Stock
Equity
Preferred stock, dividend rate, (as a percent)			5.75%	5.75%
Preference stocks summary
Preferred Stock, Shares Outstanding	110,004		110,004
Redemption price (in dollars per share)	$ 2,500.00		$ 2,500.00	$ 2,500.00
Dividends (in dollars per share)	$ 143.750		$ 143.750	$ 143.750
Preferred / preference stock outstanding value	$ 275		$ 275	$ 275
SCE | 5.375% Series J Preferred Stock
Equity
Preferred stock, dividend rate, (as a percent)			5.375%	5.375%
Preference stocks summary
Preferred Stock, Shares Outstanding	130,004		130,004	130,004
Redemption price (in dollars per share)	$ 2,500.00		$ 2,500.00	$ 2,500.00
Dividends (in dollars per share)	$ 134.375		$ 134.375	$ 134.375
Preferred / preference stock outstanding value	$ 325		$ 325	$ 325
SCE | 5.45% Series K Preferred Stock
Equity
Preferred stock, dividend rate, (as a percent)			5.45%	5.45%
Preference stocks summary
Preferred Stock, Shares Outstanding	120,004		120,004
Redemption price (in dollars per share)	$ 2,500.00		$ 2,500.00	$ 2,500.00
Dividends (in dollars per share)	$ 136.250		$ 136.250	$ 136.250
Preferred / preference stock outstanding value	$ 300		$ 300	$ 300
SCE | 5.00% Series L Preferred Stock
Equity
Preferred stock, dividend rate, (as a percent)			5.00%	5.00%
Preference stocks summary
Preferred Stock, Shares Outstanding	190,004		190,004	190,004
Redemption price (in dollars per share)	$ 2,500.00		$ 2,500.00	$ 2,500.00
Dividends (in dollars per share)	$ 125.000		$ 125.000	$ 125.000
Preferred / preference stock outstanding value	$ 475		$ 475	$ 475
SCE | 7.50% Series M Preferred Stock
Equity
Preferred stock, dividend rate, (as a percent)			7.50%	7.50%
Preference stocks summary
Preferred Stock, Shares Outstanding	220,004		220,004	220,004
Redemption price (in dollars per share)	$ 2,500.00		$ 2,500.00	$ 2,500.00
Preferred / preference stock outstanding value	$ 550		$ 550