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Label | Element | Value
--- | --- | ---
Economic Hedges [Member] | Payables [Member] | Southern California Edison Company [Member] | Electric Utility [Member] |  |
Additional Collateral, Aggregate Fair Value | us-gaap_AdditionalCollateralAggregateFairValue | $ 39

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- Definition The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624258-113959 + Details
Name: | us-gaap_AdditionalCollateralAggregateFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | eix_DerivativeInstrumentsByHedgingRelationshipAxis=eix_EconomicHedgesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_FinancialInstrumentsOwnedAndPledgedAsCollateralAxis=eix_PayablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=eix_ElectricUtilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |