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 $ 12,100us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest [1] $ 11,850us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest  
Comprehensive income (loss) 329sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax 219sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax  
Share-based compensation expense 13us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue 10us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue  
Common stock dividends declared (173)us-gaap_DividendsCommonStock (162)us-gaap_DividendsCommonStock  
Issuance of common stock 30us-gaap_StockIssuedDuringPeriodValueNewIssues 11us-gaap_StockIssuedDuringPeriodValueNewIssues  
Tax benefit related to share-based compensation 52us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation 8us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation  
Repurchases of common stock (65)us-gaap_StockRepurchasedDuringPeriodValue (37)us-gaap_StockRepurchasedDuringPeriodValue  
Noncontrolling Interest Increase   1us-gaap_NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest  
Distributions to noncontrolling interests (5)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders (11)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders  
Equity, end of period 12,281us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest 11,889us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest  
Ownership Interests Held By Others [Line Items]      
Amount of ownership interests held by others 757sre_AmountOfOwnershipInterestsHeldByOthers   754sre_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 23sre_AmountOfOwnershipInterestsHeldByOthers
/ sre_ScheduleOfOwnershipInterestsHeldByOthersAxis
= sre_OwnershipInterestsHeldByOthersBayGasStorageCompanyMember		   23sre_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 1sre_AmountOfOwnershipInterestsHeldByOthers
/ sre_ScheduleOfOwnershipInterestsHeldByOthersAxis
= sre_OwnershipInterestsHeldByOthersSouthernGasTransmissionMember		   1sre_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 14sre_AmountOfOwnershipInterestsHeldByOthers
/ sre_ScheduleOfOwnershipInterestsHeldByOthersAxis
= sre_OwnershipInterestsHeldByOthersLibertyGasStorageMember		   14sre_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 3sre_AmountOfOwnershipInterestsHeldByOthers
/ sre_ScheduleOfOwnershipInterestsHeldByOthersAxis
= sre_OwnershipInterestsHeldByOthersTecsurMember		   4sre_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 174sre_AmountOfOwnershipInterestsHeldByOthers
/ sre_ScheduleOfOwnershipInterestsHeldByOthersAxis
= sre_OwnershipInterestsHeldByOthersLuzDelSurMember		   177sre_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 23sre_AmountOfOwnershipInterestsHeldByOthers
/ sre_ScheduleOfOwnershipInterestsHeldByOthersAxis
= sre_OwnershipInterestsHeldByOthersChilquintaEnergiaMember		 [2]   23sre_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 59sre_AmountOfOwnershipInterestsHeldByOthers
/ sre_ScheduleOfOwnershipInterestsHeldByOthersAxis
= sre_OwnershipInterestsHeldByOthersOtayMesaVieMember		   60sre_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 460sre_AmountOfOwnershipInterestsHeldByOthers
/ sre_ScheduleOfOwnershipInterestsHeldByOthersAxis
= sre_OwnershipInterestsHeldByOthersIenovaMember		   452sre_AmountOfOwnershipInterestsHeldByOthers
/ sre_ScheduleOfOwnershipInterestsHeldByOthersAxis
= sre_OwnershipInterestsHeldByOthersIenovaMember
San Diego Gas and Electric Company [Member]      
Comprehensive Income Disclosure [Line Items]      
Equity, beginning of period 4,992us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember		 4,719us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember		  
Comprehensive income (loss) 149sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember		 101sre_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 5,138us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember		 4,814us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember		  
Southern California Gas Company [Member]      
Comprehensive Income Disclosure [Line Items]      
Equity, beginning of period     2,781us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= sre_SouthernCaliforniaGasCompanyMember
Equity, end of period 2,995us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= sre_SouthernCaliforniaGasCompanyMember		   2,781us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= sre_SouthernCaliforniaGasCompanyMember
Total Shareholders' Equity      
Comprehensive Income Disclosure [Line Items]      
Equity, beginning of period 11,326us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		 11,008us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		  
Comprehensive income (loss) 321sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		 202sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		  
Share-based compensation expense 13us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		 10us-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 30us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		 11us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		  
Tax benefit related to share-based compensation 52us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		 8us-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   0us-gaap_NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		  
Distributions to noncontrolling interests 0us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		 0us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		  
Equity, end of period 11,504us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		 11,040us-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 4,932us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		 4,628us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		  
Comprehensive income (loss) 147sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		 99sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		  
Distributions to noncontrolling interests 0us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		 0us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		  
Equity, end of period 5,079us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		 4,727us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember		  
Noncontrolling Interests [Member]      
Comprehensive Income Disclosure [Line Items]      
Equity, beginning of period 774us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		 842us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		  
Comprehensive income (loss) 8sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		 17sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		  
Share-based compensation expense 0us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		 0us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		  
Common stock dividends declared 0us-gaap_DividendsCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		 0us-gaap_DividendsCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		  
Issuance of common stock 0us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		 0us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		  
Tax benefit related to share-based compensation 0us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		 0us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		  
Repurchases of common stock 0us-gaap_StockRepurchasedDuringPeriodValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		 0us-gaap_StockRepurchasedDuringPeriodValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		  
Noncontrolling Interest Increase   1us-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 777us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		 849us-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 60us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		 91us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		  
Comprehensive income (loss) 2sre_ComprehensiveIncomeLossBeforePreferredDividendsAndAfterTax
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		 2sre_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 $ 59us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= sre_SanDiegoGasAndElectricCompanyMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember		 $ 87us-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.