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v3.19.3.a.u2

Summary of Significant Accounting Policies (Organization and Basis of Presentation) (Details) mi² in Thousands | 12 Months Ended
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Dec. 31, 2019 mi²
Electric Utility | SCE |
Segment Reporting Information [Line Items] |
Supply of electricity area covered (in square miles) | 50

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- Definition Supply Of Electricity Area Covered 1 + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Period Type: |