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v3.20.2

Equity (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
May 31, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2020 | May 31, 2019
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) | 14,181,882 |  |  |  |
Proceeds received | $ 800.0 |  |  |  |
Offering expenses | $ 14.0 |  |  |  |
Shares issued |  | $ 815.0 | $ 88.0 |  |
ATM |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  | 0 |  | 391,501 |
Proceeds received |  |  |  | $ 27.0 |
Offering expenses |  |  |  | 0.3 |
Aggregate sales price (up to) |  |  |  |  | $ 1,500.0
Aggregate sales price remaining |  | $ 1,300.0 |  | 1,300.0 |
401(k) defined contribution savings plan |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Proceeds received |  | $ 26.0 |  | $ 72.0 |
Issuance of new common stock (in shares) |  | 448,000 |  | 1,171,800 |
Stock compensation awards |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Proceeds received |  | $ 1.0 |  | $ 14.0 |
Issuance of new common stock (in shares) |  | 20,571 |  | 333,693 |
In lieu of dividend payment |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Proceeds received |  | $ 5.0 |  | $ 9.0 |
Issuance of new common stock (in shares) |  | 72,910 |  | 129,019 |
Southern California Edison |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Capital contributions |  | $ 619.0 |  | $ 888.0 |

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