XML 97 R79.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Commitments and Contingencies (Nuclear Insurance) (Details) - USD ($) |  | 9 Months Ended
--- | --- | ---
Jan. 05, 2018 | Sep. 30, 2018
Southern California Edison | Palo Verde |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Maximum per incident | $ 60,000,000 |
Maximum per incident, annually | 9,000,000 |
Maximum per incident, prior events | 255,000,000 |
Maximum per incident, prior events, annually | $ 38,000,000 |
Nuclear Insurance | San Onofre |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Federal limit on public liability claims from nuclear incident, approximate |  | $ 560,000,000
Nuclear Insurance | Palo Verde |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Loss Limit, Public Offsite, Bodily Injury and Property Damage from Nuclear Incident, Federal Claim Limit |  | 13,100,000,000
Nuclear Insurance | SCE and other owners of San Onofre and Palo Verde | San Onofre |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Loss limit, property damage insurance, federal minimum requirement |  | 50,000,000
Nuclear Insurance | SCE and other owners of San Onofre and Palo Verde | Palo Verde |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Loss limit, property damage insurance, federal minimum requirement |  | 1,060,000,000
Nuclear Insurance | Southern California Edison |  |
Schedule Of Commitments And Contingencies [Line Items] |  |
Limit on assessment of retrospective premium adjustments, per year, approximate |  | $ 52,000,000

X
- Definition The approximate maximum amount of public liability, as limited by federal law, resulting from a nuclear incident. + References No definition available. + Details
Name: | eix_FederalLimitOnPublicLiabilityClaimsFromNuclearIncidentApproximate
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The approximate maximum yearly retrospective premium adjustments that could be assessed against the entity. + References No definition available. + Details
Name: | eix_LimitOnAssessmentOfRetrospectivePremiumAdjustmentsPerYearApproximate
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loss Limit, Property Damage Insurance, Federal Minimum Requirement + References No definition available. + Details
Name: | eix_LossLimitPropertyDamageInsuranceFederalMinimumRequirement
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loss Limit, Public Offsite, Bodily Injury and Property Damage from Nuclear Incident, Federal Claim Limit + References No definition available. + Details
Name: | eix_LossLimitPublicOffsiteBodilyInjuryandPropertyDamagefromNuclearIncidentFederalClaimLimit
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Ownership Limit on Offsite Liability Claims from Nuclear Incident, Annually, Approximate + References No definition available. + Details
Name: | eix_OwnershipLimitonOffsiteLiabilityClaimsfromNuclearIncidentAnnuallyApproximate
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Ownership Limit on Offsite Liability Claims from Nuclear Incident, Approximate + References No definition available. + Details
Name: | eix_OwnershipLimitonOffsiteLiabilityClaimsfromNuclearIncidentApproximate
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Ownership Limit on Offsite Liability Claims from Nuclear Incident, Past Events, Annually, Approximate + References No definition available. + Details
Name: | eix_OwnershipLimitonOffsiteLiabilityClaimsfromNuclearIncidentPastEventsAnnuallyApproximate
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Ownership Limit on Offsite Liability Claims from Nuclear Incident, Past Events, Approximate + References No definition available. + Details
Name: | eix_OwnershipLimitonOffsiteLiabilityClaimsfromNuclearIncidentPastEventsApproximate
Namespace Prefix: | eix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Schedule Of Commitments And Contingencies [Line Items] + References No definition available. + Details
Name: | eix_ScheduleOfCommitmentsAndContingenciesLineItems
Namespace Prefix: | eix_
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_JointlyOwnedUtilityPlantAxis=eix_PaloVerdeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_JointlyOwnedUtilityPlantAxis=eix_SanOnofreMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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