XML 145 R127.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Commitments and Contingencies (Nuclear Insurance) (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Jan. 05, 2018 | Dec. 31, 2018
SCE | Palo Verde (nuclear) |  |
Loss Contingencies [Line Items] |  |
Maximum per incident | $ 65,000,000 |
Maximum per incident annual | 9,700,000 |
Maximum per incident, prior events | 255,000,000 |
Maximum per incident, prior events, annually | $ 38,000,000 |
Insurance Claims | Palo Verde (nuclear) |  |
Loss Contingencies [Line Items] |  |
Federal loss limit, bodily injury and property damage from nuclear incident |  | $ 14,100,000,000
Insurance Claims | San Onofre |  |
Loss Contingencies [Line Items] |  |
Federal limit on public liability claims from nuclear incident, approximate |  | 560,000,000
Insurance Claims | SCE and other owners of San Onofre and Palo Verde | Palo Verde (nuclear) |  |
Loss Contingencies [Line Items] |  |
Minimum federal requirement of nuclear property insurance |  | 1,060,000,000.00
Insurance Claims | SCE and other owners of San Onofre and Palo Verde | San Onofre |  |
Loss Contingencies [Line Items] |  |
Minimum federal requirement of nuclear property insurance |  | 50,000,000
Insurance Claims | SCE |  |
Loss 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 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: | 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: |