XML 92 R74.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Commitments and Contingencies (Southern California Wildfires) (Details) a in Thousands | 10 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 USD ($) claims | May 31, 2019 USD ($) | Dec. 31, 2017 USD ($) a fatality structure
Loss Contingencies [Line Items] |  |  |
Derivative lawsuits | claims | 2 |  |
Southern California Edison |  |  |
Loss Contingencies [Line Items] |  |  |
Wildfire-specific insurance coverage |  |  | $ 1,000,000,000
Self-insured retention | $ 10,000,000 |  | $ 10,000,000
Southern California Edison | Forecast |  |  |
Loss Contingencies [Line Items] |  |  |
Wildfire-specific insurance coverage |  | $ 1,000,000,000 |
Southern California Edison | December 2017 Wildfires |  |  |
Loss Contingencies [Line Items] |  |  |
Acres burned | a |  |  | 280
Structures destroyed | structure |  |  | 1,063
Structures damaged | structure |  |  | 280
Fatalities | fatality |  |  | 2
Capital expenditures | $ 84,000,000 |  |

X
- Definition Acres Burned + References No definition available. + Details
Name: | eix_AcresBurned
Namespace Prefix: | eix_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

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 Loss Incurred, Capital Expenditures + References No definition available. + Details
Name: | eix_LossIncurredCapitalExpenditures
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Self Insurance Retention Per Wildfire Occurrence + References No definition available. + Details
Name: | eix_SelfInsuranceRetentionPerWildfireOccurrence
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 Wildfire Insurance Coverage + References No definition available. + Details
Name: | eix_WildfireInsuranceCoverage
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_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of pending claims pertaining to a loss contingency. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349 + Details
Name: | us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=eix_December2017WildfiresMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |