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Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) - SCE | Dec. 31, 2024
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Generation plant | Minimum |
Property, Plant and Equipment [Line Items] |
Estimated and Weighted Average Useful Lives | 10 years
Generation plant | Maximum |
Property, Plant and Equipment [Line Items] |
Estimated and Weighted Average Useful Lives | 54 years
Generation plant | Weighted Average |
Property, Plant and Equipment [Line Items] |
Estimated and Weighted Average Useful Lives | 39 years
Distribution plant | Minimum |
Property, Plant and Equipment [Line Items] |
Estimated and Weighted Average Useful Lives | 20 years
Distribution plant | Maximum |
Property, Plant and Equipment [Line Items] |
Estimated and Weighted Average Useful Lives | 67 years
Distribution plant | Weighted Average |
Property, Plant and Equipment [Line Items] |
Estimated and Weighted Average Useful Lives | 50 years
Transmission plant | Minimum |
Property, Plant and Equipment [Line Items] |
Estimated and Weighted Average Useful Lives | 30 years
Transmission plant | Maximum |
Property, Plant and Equipment [Line Items] |
Estimated and Weighted Average Useful Lives | 65 years
Transmission plant | Weighted Average |
Property, Plant and Equipment [Line Items] |
Estimated and Weighted Average Useful Lives | 53 years
General plant and other | Minimum |
Property, Plant and Equipment [Line Items] |
Estimated and Weighted Average Useful Lives | 5 years
General plant and other | Maximum |
Property, Plant and Equipment [Line Items] |
Estimated and Weighted Average Useful Lives | 60 years
General plant and other | Weighted Average |
Property, Plant and Equipment [Line Items] |
Estimated and Weighted Average Useful Lives | 19 years

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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 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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