Equity (Preferred and Preference) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended			24 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022	Feb. 23, 2023	Nov. 30, 2022
Class of Stock [Line Items]
Preferred stock, shares authorized	50,000,000	50,000,000		50,000,000
Redemption of preferred and preference stock			$ 308
Dividends Declared per Share	$ 2.95			$ 2.95	$ 0.7375	$ 2.80
Preferred / preference stock	$ 1,978	$ 1,977		$ 1,978
Edison International's preference stock of utility	1,901	1,901		1,901
SCE
Class of Stock [Line Items]
Redemption of preferred and preference stock			308
Preferred / preference stock	$ 1,945	1,945		$ 1,945
SCE | Cumulative preferred stock, $100 par value
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 100			$ 100
Preferred stock, shares authorized	12,000,000			12,000,000
SCE | Cumulative preferred stock $25 par value
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 25			$ 25
Preferred stock, shares authorized	24,000,000			24,000,000
SCE | No par value
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 0			$ 0
Preferred stock, shares authorized	50,000,000			50,000,000
SCE | Preferred stock
Class of Stock [Line Items]
Dividends in arrears preferred stock	$ 0
Redemption of preferred and preference stock	$ 0	$ 0	120	$ 0
Redemption loss			$ 9
Stock issued (in shares)	0	0
Preferred / preference stock	$ 1,945	$ 1,945		$ 1,945
Less issuance costs	$ (44)	(44)
SCE | 4.32% Series
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)			4.32%
Redemption price (in dollars per share)			$ 28.75
SCE | 4.08% Series
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)			4.08%
Redemption price (in dollars per share)			$ 25.50
SCE | 4.24% Series
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)			4.24%
Redemption price (in dollars per share)			$ 25.80
SCE | 4.78% Series
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)			4.78%
Redemption price (in dollars per share)			$ 25.80
SCE | Series E Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)	4.199%
Redemption price (in dollars per share)	$ 1,000.00			$ 1,000.00
Shares Outstanding	350,000			350,000
Dividends Declared per Share	$ 65.110			$ 65.110
Preferred / preference stock	$ 350	350		$ 350
SCE | 5.10% Series G Preferred Stock
Class of Stock [Line Items]
Redemption of preferred and preference stock			$ 180
Preferred stock, dividend rate, (as a percent)	5.10%
Redemption price (in dollars per share)	$ 2,500.00			$ 2,500.00
Redemption loss			$ 6
Shares Outstanding	88,004			88,004
Dividends Declared per Share	$ 127.500			$ 127.500
Preferred / preference stock	$ 220	220		$ 220
SCE | 5.75% Series H Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)	5.75%
Redemption price (in dollars per share)	$ 2,500.00			$ 2,500.00
Shares Outstanding	110,004			110,004
Dividends Declared per Share	$ 143.750			$ 143.750
Preferred / preference stock	$ 275	275		$ 275
SCE | 5.375% Series J Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)	5.375%
Redemption price (in dollars per share)	$ 2,500.00			$ 2,500.00
Shares Outstanding	130,004			130,004
Dividends Declared per Share	$ 134.375			$ 134.375
Preferred / preference stock	$ 325	325		$ 325
SCE | 5.45% Series K Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)	5.45%
Redemption price (in dollars per share)	$ 2,500.00			$ 2,500.00
Shares Outstanding	120,004			120,004
Dividends Declared per Share	$ 136.250			$ 136.250
Preferred / preference stock	$ 300	300		$ 300
SCE | 5.00% Series L Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)	5.00%
Redemption price (in dollars per share)	$ 2,500.00			$ 2,500.00
Shares Outstanding	190,004			190,004
Dividends Declared per Share	$ 125.000			$ 125.000
Preferred / preference stock	$ 475	$ 475		$ 475