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Investments (Trust Info) (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Investment Holdings [Line Items] |  |
Nuclear decommissioning trusts, net of deferred tax | $ 4,100 |
SCE |  |
Investment Holdings [Line Items] |  |
Cumulative unrealized holding gains, net of losses | 1,900 | $ 2,100
Deferred income taxes related to unrealized gains | $ 434 | 517
Nuclear decommissioning trusts, net of deferred tax |  | $ 4,400

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- Definition Decommissioning Fund Investments, Fair Value, Net of Deferred Income Tax + References No definition available. + Details
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