Equity (SCE Preferred and Preference) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Preferred stock, shares authorized	50,000,000
Redemption of preferred and preference stock		$ 308
Preferred / preference stock	$ 1,977
Edison International's preference stock of utility	1,901	1,901
SCE
Class of Stock [Line Items]
Redemption of preferred and preference stock		308
Preferred / preference stock	1,945	$ 1,945
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 | Preferred stock
Class of Stock [Line Items]
Dividends in arrears preferred stock	0
Redemption of preferred and preference stock	$ 0	$ 120
Redemption loss		(9)
Stock issued (in shares)	0
Preferred / preference stock	$ 1,945	1,945
Less issuance costs	$ (44)	(44)
SCE | 6.25% Series E Preferred Stock
Class of Stock [Line Items]
Preferred Stock, dividend rate, (as a percent)	6.25%
Redemption price (in dollars per share)	$ 1,000.00
Shares Outstanding	350,000
Dividends Declared per Share	$ 62.500
Preferred / preference stock	$ 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
Redemption loss		(6)
Shares Outstanding	88,004
Dividends Declared per Share	$ 127.500
Preferred / preference stock	$ 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
Shares Outstanding	110,004
Dividends Declared per Share	$ 143.750
Preferred / preference stock	$ 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
Shares Outstanding	130,004
Dividends Declared per Share	$ 134.375
Preferred / preference stock	$ 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
Shares Outstanding	120,004
Dividends Declared per Share	$ 136.250
Preferred / preference stock	$ 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
Shares Outstanding	190,004
Dividends Declared per Share	$ 125.000
Preferred / preference stock	$ 475	$ 475
SCE | Cumulative preferred stock, $100 par value
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 100
Preferred stock, shares authorized	12,000,000
SCE | Cumulative preferred stock $25 par value
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 25
Preferred stock, shares authorized	24,000,000
SCE | No par value
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 0
Preferred stock, shares authorized	50,000,000