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Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions | 9 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024
Statement of Cash Flows [Abstract] |  |
Long-term debt issued, net of discount and issuance costs | $ 49 | $ 37

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- Definition Premiums, Discounts and Issuance Costs of Long Term Debt + References No definition available. + Details
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Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration