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Income Taxes (Textual) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Jun. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Income Tax Examination [Line Items] |  |  |  |  |  |
2018 GRC Final Decision | $ 0 |  | $ 0 | $ 80 | $ 0 |
California Franchise Tax Board | Tax years 1994 to 2006 |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |
IRS refund expected |  |  |  |  |  | $ 65
Southern California Edison |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |
2018 GRC Final Decision | $ 0 | $ 80 | $ 0 | $ 80 | $ 0 |

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- Definition The amount of the additional liability or refund received or expected based on a final settlement with a taxing authority. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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