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Equity (Schedule of Preferred and Preference Stock) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Class of Stock [Line Items] |  |
Edison International's preferred and preference stock of utility | $ 2,193,000,000 | $ 2,193,000,000
SCE | 4.08% Series |  |
Class of Stock [Line Items] |  |
Preferred stock, par value (in dollars per share) | $ 25 |
Preferred Stock, dividend rate, (as a percent) | 4.08% |
Shares Outstanding | 650,000 |
Redemption Price (in dollars per share) | $ 25.50 |
Dividends Declared per Share (in dollars per share) | $ 1.020 |
Preferred stock before issuance costs | $ 16,000,000 | 16,000,000
SCE | 4.24% Series |  |
Class of Stock [Line Items] |  |
Preferred stock, par value (in dollars per share) | $ 25 |
Preferred Stock, dividend rate, (as a percent) | 4.24% |
Shares Outstanding | 1,200,000 |
Redemption Price (in dollars per share) | $ 25.80 |
Dividends Declared per Share (in dollars per share) | $ 1.060 |
Preferred stock before issuance costs | $ 30,000,000 | 30,000,000
SCE | 4.32% Series |  |
Class of Stock [Line Items] |  |
Preferred stock, par value (in dollars per share) | $ 25 |
Preferred Stock, dividend rate, (as a percent) | 4.32% |
Shares Outstanding | 1,653,429 |
Redemption Price (in dollars per share) | $ 28.75 |
Dividends Declared per Share (in dollars per share) | $ 1.080 |
Preferred stock before issuance costs | $ 41,000,000 | 41,000,000
SCE | 4.78% Series |  |
Class of Stock [Line Items] |  |
Preferred stock, par value (in dollars per share) | $ 25 |
Preferred Stock, dividend rate, (as a percent) | 4.78% |
Shares Outstanding | 1,296,769 |
Redemption Price (in dollars per share) | $ 25.80 |
Dividends Declared per Share (in dollars per share) | $ 1.195 |
Preferred stock before issuance costs | 33,000,000 | 33,000,000
SCE | Preference stock |  |
Class of Stock [Line Items] |  |
Preferred stock before issuance costs | 2,245,000,000 | 2,245,000,000
Less issuance costs | (52,000,000) | (52,000,000)
Edison International's preferred and preference stock of utility | $ 2,193,000,000 | 2,193,000,000
SCE | 6.25% Series E (cumulative) |  |
Class of Stock [Line Items] |  |
Preferred Stock, dividend rate, (as a percent) | 6.25% |
Shares Outstanding | 350,000 |
Redemption Price (in dollars per share) | $ 1,000.00 |
Dividends Declared per Share (in dollars per share) | $ 62.500 |
Preferred stock before issuance costs | $ 350,000,000 | 350,000,000
SCE | 5.10% Series G (cumulative) |  |
Class of Stock [Line Items] |  |
Preferred Stock, dividend rate, (as a percent) | 5.10% |
Shares Outstanding | 160,004 |
Redemption Price (in dollars per share) | $ 2,500.00 |
Dividends Declared per Share (in dollars per share) | $ 127.500 |
Preferred stock before issuance costs | $ 400,000,000 | 400,000,000
SCE | 5.75% Series H (cumulative) |  |
Class of Stock [Line Items] |  |
Preferred Stock, dividend rate, (as a percent) | 5.75% |
Shares Outstanding | 110,004 |
Redemption Price (in dollars per share) | $ 2,500.00 |
Dividends Declared per Share (in dollars per share) | $ 143.750 |
Preferred stock before issuance costs | $ 275,000,000 | 275,000,000
SCE | 5.375% Series J (cumulative) |  |
Class of Stock [Line Items] |  |
Preferred Stock, dividend rate, (as a percent) | 5.375% |
Shares Outstanding | 130,004 |
Redemption Price (in dollars per share) | $ 2,500.00 |
Dividends Declared per Share (in dollars per share) | $ 134.375 |
Preferred stock before issuance costs | $ 325,000,000 | 325,000,000
SCE | 5.45% Series K (cumulative) |  |
Class of Stock [Line Items] |  |
Preferred Stock, dividend rate, (as a percent) | 5.45% |
Shares Outstanding | 120,004 |
Redemption Price (in dollars per share) | $ 2,500.00 |
Dividends Declared per Share (in dollars per share) | $ 136.250 |
Preferred stock before issuance costs | $ 300,000,000 | 300,000,000
SCE | 5.00% Series L (cumulative) |  |
Class of Stock [Line Items] |  |
Preferred Stock, dividend rate, (as a percent) | 5.00% |
Shares Outstanding | 190,004 |
Redemption Price (in dollars per share) | $ 2,500.00 |
Dividends Declared per Share (in dollars per share) | $ 125.000 |
Preferred stock before issuance costs | $ 475,000,000 | $ 475,000,000

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