XML 53 R41.htm IDEA: XBRL DOCUMENT
v3.19.2

Summary of Significant Accounting Policies (Organization and Basis of Presentation) (Details) mi² in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2019 mi²
Southern California Edison | Electric Utility |
Segment Reporting Information [Line Items] |
Supply of electricity, area covered (square mile) | 50

X
- Definition Supply Of Electricity Area Covered 1 + References No definition available. + Details
Name: | eix_SupplyOfElectricityAreaCovered1
Namespace Prefix: | eix_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | dei_LegalEntityAxis=eix_SouthernCaliforniaEdisonCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=eix_ElectricUtilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |