v2.4.1.9

OTHER FINANCIAL DATA - COMPREHENSIVE INCOME AND EQUITY (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014
Comprehensive Income Disclosure [Line Items] |  |  |  |  |
Equity, beginning of period | $ 12,100 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | [1] | $ 11,850 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |  |
Comprehensive income (loss) | 329 sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax |  | 219 sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax |  |
Share-based compensation expense | 13 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  | 10 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  |
Common stock dividends declared | (173)us-gaap_DividendsCommonStock |  | (162)us-gaap_DividendsCommonStock |  |
Issuance of common stock | 30 us-gaap_StockIssuedDuringPeriodValueNewIssues |  | 11 us-gaap_StockIssuedDuringPeriodValueNewIssues |  |
Tax benefit related to share-based compensation | 52 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation |  | 8 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation |  |
Repurchases of common stock | (65)us-gaap_StockRepurchasedDuringPeriodValue |  | (37)us-gaap_StockRepurchasedDuringPeriodValue |  |
Noncontrolling Interest Increase |  |  | 1 us-gaap_NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest |  |
Distributions to noncontrolling interests | (5)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders |  | (11)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders |  |
Equity, end of period | 12,281 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |  | 11,889 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |  |
Ownership Interests Held By Others [Line Items] |  |  |  |  |
Amount of ownership interests held by others | 757 sre_AmountOfOwnershipInterestsHeldByOthers |  |  | 754 sre_AmountOfOwnershipInterestsHeldByOthers |
Ownership Interests Held By Others, Bay Gas Storage Company [Member] |  |  |  |  |
Ownership Interests Held By Others [Line Items] |  |  |  |  |
Percent of ownership held by others | 9.10%sre_PercentOfOwnershipHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersBayGasStorageCompanyMember |  |  | 9.10%sre_PercentOfOwnershipHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersBayGasStorageCompanyMember |
Amount of ownership interests held by others | 23 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersBayGasStorageCompanyMember |  |  | 23 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersBayGasStorageCompanyMember |
Ownership Interests Held By Others, Southern Gas Transmission [Member] |  |  |  |  |
Ownership Interests Held By Others [Line Items] |  |  |  |  |
Percent of ownership held by others | 49.00%sre_PercentOfOwnershipHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersSouthernGasTransmissionMember |  |  | 49.00%sre_PercentOfOwnershipHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersSouthernGasTransmissionMember |
Amount of ownership interests held by others | 1 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersSouthernGasTransmissionMember |  |  | 1 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersSouthernGasTransmissionMember |
Ownership Interests Held By Others, Liberty Gas Storage [Member] |  |  |  |  |
Ownership Interests Held By Others [Line Items] |  |  |  |  |
Percent of ownership held by others | 25.00%sre_PercentOfOwnershipHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersLibertyGasStorageMember |  |  | 25.00%sre_PercentOfOwnershipHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersLibertyGasStorageMember |
Amount of ownership interests held by others | 14 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersLibertyGasStorageMember |  |  | 14 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersLibertyGasStorageMember |
Ownership Interests Held By Others, Tecsur [Member] |  |  |  |  |
Ownership Interests Held By Others [Line Items] |  |  |  |  |
Percent of ownership held by others | 9.80%sre_PercentOfOwnershipHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersTecsurMember |  |  | 9.80%sre_PercentOfOwnershipHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersTecsurMember |
Amount of ownership interests held by others | 3 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersTecsurMember |  |  | 4 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersTecsurMember |
Ownership Interests Held By Others, Luz Del Sur [Member] |  |  |  |  |
Ownership Interests Held By Others [Line Items] |  |  |  |  |
Percent of ownership held by others | 16.40%sre_PercentOfOwnershipHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersLuzDelSurMember |  |  | 16.40%sre_PercentOfOwnershipHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersLuzDelSurMember |
Amount of ownership interests held by others | 174 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersLuzDelSurMember |  |  | 177 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersLuzDelSurMember |
Ownership Interests Held By Others, Chilquinta Energia [Member] |  |  |  |  |
Ownership Interests Held By Others [Line Items] |  |  |  |  |
Percent of ownership held by others, minimum | 23.50%sre_PercentOfOwnershipHeldByOthersMinimum / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersChilquintaEnergiaMember | [2] |  | 23.60%sre_PercentOfOwnershipHeldByOthersMinimum / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersChilquintaEnergiaMember | [2]
Percent of ownership held by others, maximum | 43.40%sre_PercentOfOwnershipHeldByOthersMaximum / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersChilquintaEnergiaMember | [2] |  | 43.40%sre_PercentOfOwnershipHeldByOthersMaximum / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersChilquintaEnergiaMember | [2]
Amount of ownership interests held by others | 23 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersChilquintaEnergiaMember | [2] |  | 23 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersChilquintaEnergiaMember | [2]
Otay Mesa VIE [Member] |  |  |  |  |
Ownership Interests Held By Others [Line Items] |  |  |  |  |
Percent of ownership held by others | 100.00%sre_PercentOfOwnershipHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersOtayMesaVieMember |  |  | 100.00%sre_PercentOfOwnershipHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersOtayMesaVieMember |
Amount of ownership interests held by others | 59 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersOtayMesaVieMember |  |  | 60 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersOtayMesaVieMember |
Ownership Interests Held By Others IEnova [Member] |  |  |  |  |
Ownership Interests Held By Others [Line Items] |  |  |  |  |
Percent of ownership held by others | 18.90%sre_PercentOfOwnershipHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersIenovaMember |  |  | 18.90%sre_PercentOfOwnershipHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersIenovaMember |
Amount of ownership interests held by others | 460 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersIenovaMember |  |  | 452 sre_AmountOfOwnershipInterestsHeldByOthers / sre_ScheduleOfOwnershipInterestsHeldByOthersAxis = sre_OwnershipInterestsHeldByOthersIenovaMember |
San Diego Gas and Electric Company [Member] |  |  |  |  |
Comprehensive Income Disclosure [Line Items] |  |  |  |  |
Equity, beginning of period | 4,992 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | 4,719 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |
Comprehensive income (loss) | 149 sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | 101 sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |
Distributions to noncontrolling interests | (3)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | (6)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |
Equity, end of period | 5,138 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  | 4,814 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |  |
Southern California Gas Company [Member] |  |  |  |  |
Comprehensive Income Disclosure [Line Items] |  |  |  |  |
Equity, beginning of period |  |  |  | 2,781 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |
Equity, end of period | 2,995 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |  |  | 2,781 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |
Total Shareholders' Equity |  |  |  |  |
Comprehensive Income Disclosure [Line Items] |  |  |  |  |
Equity, beginning of period | 11,326 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | 11,008 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |
Comprehensive income (loss) | 321 sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | 202 sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |
Share-based compensation expense | 13 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | 10 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |
Common stock dividends declared | (173)us-gaap_DividendsCommonStock / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | (162)us-gaap_DividendsCommonStock / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |
Issuance of common stock | 30 us-gaap_StockIssuedDuringPeriodValueNewIssues / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | 11 us-gaap_StockIssuedDuringPeriodValueNewIssues / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |
Tax benefit related to share-based compensation | 52 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | 8 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |
Repurchases of common stock | (65)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | (37)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |
Noncontrolling Interest Increase |  |  | 0 us-gaap_NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |
Distributions to noncontrolling interests | 0 us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | 0 us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |
Equity, end of period | 11,504 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | 11,040 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |
Total Shareholders' Equity | San Diego Gas and Electric Company [Member] |  |  |  |  |
Comprehensive Income Disclosure [Line Items] |  |  |  |  |
Equity, beginning of period | 4,932 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | 4,628 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |
Comprehensive income (loss) | 147 sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | 99 sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |
Distributions to noncontrolling interests | 0 us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | 0 us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |
Equity, end of period | 5,079 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | 4,727 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |
Noncontrolling Interests [Member] |  |  |  |  |
Comprehensive Income Disclosure [Line Items] |  |  |  |  |
Equity, beginning of period | 774 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  | 842 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |
Comprehensive income (loss) | 8 sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  | 17 sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |
Share-based compensation expense | 0 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  | 0 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |
Common stock dividends declared | 0 us-gaap_DividendsCommonStock / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  | 0 us-gaap_DividendsCommonStock / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |
Issuance of common stock | 0 us-gaap_StockIssuedDuringPeriodValueNewIssues / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  | 0 us-gaap_StockIssuedDuringPeriodValueNewIssues / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |
Tax benefit related to share-based compensation | 0 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  | 0 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |
Repurchases of common stock | 0 us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  | 0 us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |
Noncontrolling Interest Increase |  |  | 1 us-gaap_NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |
Distributions to noncontrolling interests | (5)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  | (11)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |
Equity, end of period | 777 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  | 849 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |
Noncontrolling Interests [Member] | San Diego Gas and Electric Company [Member] |  |  |  |  |
Comprehensive Income Disclosure [Line Items] |  |  |  |  |
Equity, beginning of period | 60 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  | 91 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |
Comprehensive income (loss) | 2 sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  | 2 sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |
Distributions to noncontrolling interests | (3)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  | (6)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |
Equity, end of period | $ 59 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  | $ 87 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |  |
[1] | Derived from audited financial statements.
[2] | Chilquinta Energía has four subsidiaries with noncontrolling interests held by others. Percentage range reflects the highest and lowest ownership percentages amongst these subsidiaries.

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