XML 85 R67.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Variable Interest Entities (Summary of Trusts' Income Statement) (Details) - SCE - Variable Interest Entity, Not Primary Beneficiary - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Trust I |  |  |
Variable Interest Entity [Line Items] |  |  |
Dividend income |  | $ 14 | $ 27
Dividend distributions |  | 14 | 27
Trust II |  |  |
Variable Interest Entity [Line Items] |  |  |
Dividend income | $ 20 | 20 | 20
Dividend distributions | 20 | 20 | 20
Trust III |  |  |
Variable Interest Entity [Line Items] |  |  |
Dividend income | 16 | 16 | 16
Dividend distributions | 16 | 16 | 16
Trust IV |  |  |
Variable Interest Entity [Line Items] |  |  |
Dividend income | 17 | 17 | 17
Dividend distributions | 17 | 17 | 17
Trust V |  |  |
Variable Interest Entity [Line Items] |  |  |
Dividend income | 16 | 16 | 13
Dividend distributions | 16 | 16 | $ 13
Trust VI |  |  |
Variable Interest Entity [Line Items] |  |  |
Dividend income | 24 | 12 |
Dividend distributions | $ 24 | $ 12 |

X
- Definition Variable Interest Entities, Dividend Distributions + References No definition available. + Details
Name: | eix_VariableInterestEntitiesDividendDistributions
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Variable Interest Entities, Dividend Income + References No definition available. + Details
Name: | eix_VariableInterestEntitiesDividendIncome
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_VariableInterestEntityLineItems
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_VariableInterestEntitiesByClassificationOfEntityAxis=us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | eix_VariableInterestEntitiesByNameOfEntityAxis=eix_SouthernCaliforniaEdisonTrustIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | eix_VariableInterestEntitiesByNameOfEntityAxis=eix_SouthernCaliforniaEdisonTrustIiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | eix_VariableInterestEntitiesByNameOfEntityAxis=eix_SouthernCaliforniaEdisonTrustIIIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | eix_VariableInterestEntitiesByNameOfEntityAxis=eix_SCETrustIVMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | eix_VariableInterestEntitiesByNameOfEntityAxis=eix_SCETrustVMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | eix_VariableInterestEntitiesByNameOfEntityAxis=eix_SCETrustVIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |