XML 64 R50.htm IDEA: XBRL DOCUMENT
v3.21.1

Variable Interest Entities (Trusts' Income Statement) (Details) - SCE - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Trust II |  |
Variable Interest Entity [Line Items] |  |
Dividend income | $ 5 | $ 5
Dividend distributions | 5 | 5
Trust III |  |
Variable Interest Entity [Line Items] |  |
Dividend income | 4 | 4
Dividend distributions | 4 | 4
Trust IV |  |
Variable Interest Entity [Line Items] |  |
Dividend income | 4 | 4
Dividend distributions | 4 | 4
Trust V |  |
Variable Interest Entity [Line Items] |  |
Dividend income | 4 | 4
Dividend distributions | 4 | 4
Trust VI |  |
Variable Interest Entity [Line Items] |  |
Dividend income | 6 | 6
Dividend distributions | $ 6 | $ 6

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: | srt_ConsolidatedEntitiesAxis=eix_SouthernCaliforniaEdisonTrustIiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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