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Investments (Other) (Details) - Edison International Parent and Other - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Investments |  |
Marketable securities | $ 5 | $ 12
Equity investments without readily determinable fair values | 12 | 3
Cumulative upward adjustments investments without readily determinable fair values | 9 | 1
Marketable securities, Unrealized gains/(losses) | (6) | 3
Equity investments without readily determinable fair values - upward adjustments | 8 | 1
Total unrealized gains/(losses) | $ 2 | $ 4

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