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Variable Interest Entities (Income Statement) (Details) - SCE - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Trust II |  |  |
Variable Interest Entity |  |  |
Dividend income | $ 11 | $ 11 | $ 20
Dividend distributions | 11 | 11 | 20
Trust III |  |  |
Variable Interest Entity |  |  |
Dividend income | 16 | 16 | 16
Dividend distributions | 16 | 16 | 16
Trust IV |  |  |
Variable Interest Entity |  |  |
Dividend income | 17 | 17 | 17
Dividend distributions | 17 | 17 | 17
Trust V |  |  |
Variable Interest Entity |  |  |
Dividend income | 16 | 16 | 16
Dividend distributions | 16 | 16 | 16
Trust VI |  |  |
Variable Interest Entity |  |  |
Dividend income | 24 | 24 | 24
Dividend distributions | 24 | $ 24 | $ 24
Trust VII |  |  |
Variable Interest Entity |  |  |
Dividend income | 4 |  |
Dividend distributions | $ 4 |  |

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