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v3.20.4

Summary of Significant Accounting Policies (Revenue Recognition) (Details) - SCE - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Jul. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Franchise fees billed to customers |  |  | $ 131 | $ 122 | $ 133
Rate recovery period |  |  | 24 months |  |
CPUC |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Requested increase rate amount | $ 214 | $ 505 |  |  |
CPUC | 2018 GRC |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Impact of decision non-core impairment of utility core earnings, net of tax |  |  |  | 65 |
Reduction in authorized revenue |  |  |  | 289 |
Impact of decision non-core impairment of utility property, plant and equipment |  |  |  | 170 |
Impact of decision non-core impairment of utility property, plant and equipment, net of tax |  |  |  | $ 123 |
Requested increase rate amount | $ 204 | $ 478 |  |  |
CPUC | 2021 GRC |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Requested test year revenue requirement |  |  | $ 7,600 |  |
Requested increase rate amount |  |  | $ 1,300 |  |

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