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v2.4.1.9

Income Taxes (Components of Income Tax Expense (Benefit) by Location) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Current: |  |  |
Federal | $ (99)us-gaap_CurrentFederalTaxExpenseBenefit | $ (97)us-gaap_CurrentFederalTaxExpenseBenefit | $ 0 us-gaap_CurrentFederalTaxExpenseBenefit
State | 20 us-gaap_CurrentStateAndLocalTaxExpenseBenefit | (9)us-gaap_CurrentStateAndLocalTaxExpenseBenefit | 0 us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Total Current Income Tax Expense (Benefit) | (79)us-gaap_CurrentIncomeTaxExpenseBenefit | (106)us-gaap_CurrentIncomeTaxExpenseBenefit | 0 us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred: |  |  |
Federal | 454 us-gaap_DeferredFederalIncomeTaxExpenseBenefit | 317 us-gaap_DeferredFederalIncomeTaxExpenseBenefit | 132 us-gaap_DeferredFederalIncomeTaxExpenseBenefit
State | 68 us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit | 31 us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit | 135 us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
Total Deferred Income Tax Expense (Benefit) | 522 us-gaap_DeferredIncomeTaxExpenseBenefit | 348 us-gaap_DeferredIncomeTaxExpenseBenefit | 267 us-gaap_DeferredIncomeTaxExpenseBenefit
Total income tax expense from continuing operations | 443 us-gaap_IncomeTaxExpenseBenefit | 242 us-gaap_IncomeTaxExpenseBenefit | 267 us-gaap_IncomeTaxExpenseBenefit
Discontinued operations | (710)us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation | (36)us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation | (549)us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation
Total | (267)eix_IncomeTaxExpenseBenefitContinuingAndDiscontinuingOperations | 206 eix_IncomeTaxExpenseBenefitContinuingAndDiscontinuingOperations | (282)eix_IncomeTaxExpenseBenefitContinuingAndDiscontinuingOperations
Southern California Edison |  |  |
Current: |  |  |
Federal | (89)us-gaap_CurrentFederalTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | (119)us-gaap_CurrentFederalTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | 0 us-gaap_CurrentFederalTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember
State | 101 us-gaap_CurrentStateAndLocalTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | (19)us-gaap_CurrentStateAndLocalTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | 50 us-gaap_CurrentStateAndLocalTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember
Total Current Income Tax Expense (Benefit) | 12 us-gaap_CurrentIncomeTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | (138)us-gaap_CurrentIncomeTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | 50 us-gaap_CurrentIncomeTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember
Deferred: |  |  |
Federal | 476 us-gaap_DeferredFederalIncomeTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | 345 us-gaap_DeferredFederalIncomeTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | 136 us-gaap_DeferredFederalIncomeTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember
State | (14)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | 72 us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | 28 us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember
Total Deferred Income Tax Expense (Benefit) | 462 us-gaap_DeferredIncomeTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | 417 us-gaap_DeferredIncomeTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | 164 us-gaap_DeferredIncomeTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember
Total income tax expense from continuing operations | 474 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | 279 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | 214 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember
Discontinued operations | 0 us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | 0 us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | 0 us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember
Total | $ 474 eix_IncomeTaxExpenseBenefitContinuingAndDiscontinuingOperations / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | $ 279 eix_IncomeTaxExpenseBenefitContinuingAndDiscontinuingOperations / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember | $ 214 eix_IncomeTaxExpenseBenefitContinuingAndDiscontinuingOperations / dei_LegalEntityAxis = eix_SouthernCaliforniaEdisonCompanyMember

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