XML 83 R72.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Commitments and Contingencies (Montecito Mudslides) (Details) $ in Millions | Jun. 30, 2018 USD ($) | Jan. 31, 2018 fatality structure
--- | --- | ---
Montecito mudslides |  |
Loss Contingencies [Line Items] |  |
Structures destroyed | structure |  | 135
Structures damaged | structure |  | 324
Fatalities | fatality |  | 21
Additional fatalities | fatality |  | 2
Southern California Edison |  |
Loss Contingencies [Line Items] |  |
Other general liability insurance coverage | $ | $ 450 |

X
- Definition Fatalities + References No definition available. + Details
Name: | eix_Fatalities
Namespace Prefix: | eix_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fatalities, Additional Presumed + References No definition available. + Details
Name: | eix_FatalitiesAdditionalPresumed
Namespace Prefix: | eix_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition General Liability Insurance Coverage + References No definition available. + Details
Name: | eix_GeneralLiabilityInsuranceCoverage
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Structures Damaged + References No definition available. + Details
Name: | eix_StructuresDamaged
Namespace Prefix: | eix_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Structures Destroyed + References No definition available. + Details
Name: | eix_StructuresDestroyed
Namespace Prefix: | eix_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=eix_MontecitoMudslidesMember
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: |