v2.4.1.9

COMMITMENTS AND CONTINGENCIES - NUCLEAR INSURANCE (Details) (San Diego Gas and Electric Company [Member], USD $) | Mar. 31, 2015
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San Diego Gas and Electric Company [Member] |
Schedule Of Nuclear Insurance [Line Items] |
Nuclear Liability Insurance Coverage, Maximum | $ 375,000,000 sre_NuclearLiabilityInsuranceCoverageMaximum / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember
Secondary Financial Protection, Maximum | 13,200,000,000 sre_SecondaryFinancialProtectionMaximum / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember
Secondary Financial Protection, Company Contribution, Maximum | 50,930,000 sre_SecondaryFinancialProtectionCompanyContributionMaximum / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember
Secondary Financial Protection, Company Contribution, Annual Maximum | 7,600,000 sre_SecondaryFinancialProtectionCompanyContributionAnnualMaximum / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember
Nuclear Property Insurance Coverage, Maximum | 2,750,000,000 sre_NuclearPropertyInsuranceCoverageMaximum / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember
Nuclear Property Damage Insurance, Premium Assessment | 9,700,000 sre_NuclearPropertyDamageInsurancePremiumAssessment / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember
Nuclear Property Insurance Terrorism Coverage, Maximum | 3,240,000,000 sre_NuclearPropertyInsuranceTerrorismCoverageMaximum / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember
Nuclear Property Insurance, Deductible Per Event | $ 2,500,000 sre_NuclearPropertyInsuranceDeductiblePerEvent / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | sre_NuclearLiabilityInsuranceCoverageMaximum
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | sre_NuclearPropertyDamageInsurancePremiumAssessment
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | sre_NuclearPropertyInsuranceCoverageMaximum
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | sre_NuclearPropertyInsuranceDeductiblePerEvent
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | sre_NuclearPropertyInsuranceTerrorismCoverageMaximum
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | sre_ScheduleOfNuclearInsuranceLineItems
Namespace Prefix: | sre_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | sre_SecondaryFinancialProtectionCompanyContributionAnnualMaximum
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | sre_SecondaryFinancialProtectionCompanyContributionMaximum
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | sre_SecondaryFinancialProtectionMaximum
Namespace Prefix: | sre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant