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Summary of Significant Accounting Policies (Revenue) (Details) - USD ($) $ in Millions | 1 Months Ended |
--- | --- | ---
Nov. 30, 2021 | Dec. 31, 2020 | Mar. 31, 2022
SCE |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Revenue not yet approved |  |  | $ 43
Requested increase (decrease) revenue requirement |  | $ 214 |
2022 Formula Rate |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested increase (decrease) revenue requirement | $ 326 |  |
Requested increase (decrease) revenue requirement (as a percent) | 30.00% |  |

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- Details
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