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v3.22.1

Related-Party Transactions (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Related Party Transaction [Line Items] |  |  |
Wildfire insurance expense |  |  | $ 425
SCE |  |  |
Related Party Transaction [Line Items] |  |  |
Wildfire insurance expense |  |  | 450
SCE | Wildfire liability insurance | Wholly-owned subsidiary |  |  |
Related Party Transaction [Line Items] |  |  |
Prepaid Insurance | $ 26 |  | $ 52
Long-term insurance receivables due from affiliate | 76 |  |
Wildfire insurance expense | $ 39 | $ 43 |

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