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Derivative Instruments - Summaries of Notional Volumes and Derivatives Notional Values (Details) - SCE | 12 Months Ended
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Dec. 31, 2024 GWh Bcfe | Dec. 31, 2023 GWh Bcfe
Electricity options, swaps and forwards |  |
Derivatives |  |
Notional volumes of derivative instruments | 3,295 | 3,494
Natural gas options, swaps and forwards |  |
Derivatives |  |
Notional volumes of derivative instruments | Bcfe | 4,000,000,000 | 31,000,000,000
Congestion revenue rights |  |
Derivatives |  |
Notional volumes of derivative instruments | 8,141 | 35,011

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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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480237/815-40-50-5 + Details
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