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Summary of Significant Accounting Policies (Emissions) (Details) - SCE - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Significant Accounting Policies [Line Items] |  |
GHG allowances | $ 128 | $ 87
GHG emission obligations | 117 | 55
Regulatory liabilities | 10,183 | 9,175
LCFS net sales proceeds |  |
Significant Accounting Policies [Line Items] |  |
Regulatory liabilities | $ 248 | $ 218

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- Definition Significant Accounting Policies [Line Items] + References No definition available. + Details
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- Definition The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 405 -Name Accounting Standards Codification -Section 25 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481854/980-405-25-1 + Details
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