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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 |

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