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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 |  |

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