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Investments (Trust gain loss) (Details) - SCE - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Investment Holdings [Line Items] |  |
Gross realized gains | $ 15 | $ 111
Gross realized losses | 16 | 12
Net unrealized (losses) gains for equity securities | $ (100) | $ 18

X
- Definition This item represents the amount of realized gain on investments in trust during the period from the sale of securities. + References No definition available. + Details
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X
- Definition This item represents the amount of realized loss on investments in trust during the period from the sale of securities. + References No definition available. + Details
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Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
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X
- Definition This item represents the amount of net unrealized gain on investments in trust during the period. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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