1.0.0.3 true STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME AND CHANGES IN EQUITY (USD $) In Millions false 1 $ true false false false us-gaap_ParentCompanyMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ParentCompanyMember dei_LegalEntityAxis explicitMember Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 2 $ true false false false us-gaap_ParentCompanyMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ParentCompanyMember dei_LegalEntityAxis explicitMember Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 3 $ true false false false us-gaap_ParentCompanyMember dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ParentCompanyMember dei_LegalEntityAxis explicitMember Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 1 Sempra Energy Consolidated 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 2 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 true true 8309000000 8309 [1] false false 2 true true 8587000000 8587 [1] false false 3 true true 7622000000 7622 false false No definition available. No authoritative reference available. false 3 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 1122000000 1122 false false 2 false true 1068000000 1068 [1] false false 3 false true 1092000000 1092 [1] false false No definition available. No authoritative reference available. false 4 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 5 Foreign currency translation adjustments 2 us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 102000000 102 false false 2 false true -140000000 -140 [1] false false 3 false true 38000000 38 [1] false false No definition available. No authoritative reference available. false 6 Available-for-sale securities 2 us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 7000000 7 false false 2 false true -26000000 -26 [1] false false 3 false true 10000000 10 [1] false false No definition available. No authoritative reference available. false 7 Pension and other postretirement benefits 2 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true -3000000 -3 false false 2 false true -30000000 -30 [1] false false 3 false true 15000000 15 [1] false false No definition available. No authoritative reference available. false 8 Financial instruments 2 us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 35000000 35 false false 2 false true -30000000 -30 [1] false false 3 false true 26000000 26 [1] false false No definition available. No authoritative reference available. false 9 Comprehensive income (loss) 2 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 1263000000 1263 false false 2 false true 842000000 842 [1] false false 3 false true 1181000000 1181 [1] false false No definition available. No authoritative reference available. true 10 Adoption of new accounting principles 2 us-gaap_CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true 10000000 10 [1] false false No definition available. No authoritative reference available. false 11 Share-based compensation expense 2 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 38000000 38 false false 2 false true 49000000 49 [1] false false 3 false true 43000000 43 [1] false false No definition available. No authoritative reference available. false 12 Common stock dividends declared 2 us-gaap_DividendsCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -383000000 -383 false false 2 false true -342000000 -342 [1] false false 3 false true -326000000 -326 [1] false false No definition available. No authoritative reference available. false 14 Preferred dividends of subsidiaries 2 sre_PreferredStockDividendsOfSubsidiaries sre false debit duration monetary No definition available. false false false false false false false false false 1 false true -10000000 -10 false false 2 false true -10000000 -10 [1] false false 3 false true -10000000 -10 [1] false false No definition available. No authoritative reference available. false 15 Quasi-reorganization adjustment 2 sre_QuasiReorganizationAdjustment sre false credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -2000000 -2 [1] false false No definition available. No authoritative reference available. false 16 Issuance of common stock 2 us-gaap_StockIssuedDuringPeriodValueNewIssues us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 114000000 114 false false 2 false true 18000000 18 [1] false false 3 false true 62000000 62 [1] false false No definition available. No authoritative reference available. false 17 Tax benefit related to share-based compensation 2 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 23000000 23 false false 2 false true 6000000 6 [1] false false 3 false true 26000000 26 [1] false false No definition available. No authoritative reference available. false 18 Repurchases of common stock 2 us-gaap_StockRepurchasedDuringPeriodValue us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -22000000 -22 false false 2 false true -1018000000 -1018 [1] false false 3 false true -185000000 -185 [1] false false No definition available. No authoritative reference available. false 19 Common stock released from ESOP 2 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 15000000 15 false false 2 false true 16000000 16 [1] false false 3 false true 12000000 12 [1] false false No definition available. No authoritative reference available. false 20 Equity contributed by noncontrolling interests 2 us-gaap_MinorityInterestIncreaseFromStockIssuance us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 7000000 7 false false 2 false true 75000000 75 [1] false false 3 false true 2000000 2 [1] false false No definition available. No authoritative reference available. false 21 Distributions to noncontrolling interests 2 us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -9000000 -9 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 22 Initial consolidation of Otay Mesa VIE 2 sre_InitialConsolidationOfVariableInterestEntities sre false credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true 152000000 152 [1] false false No definition available. No authoritative reference available. false 23 EnergySouth acquisition 2 sre_AcquisitionOfNoncontrollingInterestsInSubsidiaries sre false credit instant monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true 86000000 86 [1] false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 24 Purchase of noncontrolling interest in subsidiary 2 us-gaap_MinorityInterestDecreaseFromRedemptions us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -94000000 -94 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 25 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 9251000000 9251 false false 2 false true 8309000000 8309 [1] false false 3 false true 8587000000 8587 [1] false false No definition available. No authoritative reference available. false 26 Sempra Energy Consolidated | Common Stock 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 27 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 2265000000 2265 [1] false false 2 false true 3198000000 3198 [1] false false 3 false true 3245000000 3245 false false No definition available. No authoritative reference available. false 29 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 36 Share-based compensation expense 2 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 38000000 38 false false 2 false true 49000000 49 [1] false false 3 false true 43000000 43 [1] false false No definition available. No authoritative reference available. false 40 Quasi-reorganization adjustment 2 sre_QuasiReorganizationAdjustment sre false credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -2000000 -2 [1] false false No definition available. No authoritative reference available. false 41 Issuance of common stock 2 us-gaap_StockIssuedDuringPeriodValueNewIssues us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 114000000 114 false false 2 false true 18000000 18 [1] false false 3 false true 62000000 62 [1] false false No definition available. No authoritative reference available. false 42 Tax benefit related to share-based compensation 2 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 23000000 23 false false 2 false true 6000000 6 [1] false false 3 false true 26000000 26 [1] false false No definition available. No authoritative reference available. false 43 Repurchases of common stock 2 us-gaap_StockRepurchasedDuringPeriodValue us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -22000000 -22 false false 2 false true -1018000000 -1018 [1] false false 3 false true -185000000 -185 [1] false false No definition available. No authoritative reference available. false 44 Common stock released from ESOP 2 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 10000000 10 false false 2 false true 12000000 12 [1] false false 3 false true 9000000 9 [1] false false No definition available. No authoritative reference available. false 49 Purchase of noncontrolling interest in subsidiary 2 us-gaap_MinorityInterestDecreaseFromRedemptions us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -10000000 -10 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 50 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 2418000000 2418 false false 2 false true 2265000000 2265 [1] false false 3 false true 3198000000 3198 [1] false false No definition available. No authoritative reference available. false 51 Sempra Energy Consolidated | Retained Earnings 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 52 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 6235000000 6235 [1] false false 2 false true 5464000000 5464 [1] false false 3 false true 4681000000 4681 false false No definition available. No authoritative reference available. false 53 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 1129000000 1129 false false 2 false true 1123000000 1123 [1] false false 3 false true 1109000000 1109 [1] false false No definition available. No authoritative reference available. false 54 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 60 Adoption of new accounting principles 2 us-gaap_CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true 10000000 10 [1] false false No definition available. No authoritative reference available. false 62 Common stock dividends declared 2 us-gaap_DividendsCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -383000000 -383 false false 2 false true -342000000 -342 [1] false false 3 false true -326000000 -326 [1] false false No definition available. No authoritative reference available. false 64 Preferred dividends of subsidiaries 2 sre_PreferredStockDividendsOfSubsidiaries sre false debit duration monetary No definition available. false false false false false false false false false 1 false true -10000000 -10 false false 2 false true -10000000 -10 [1] false false 3 false true -10000000 -10 [1] false false No definition available. No authoritative reference available. false 75 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 6971000000 6971 false false 2 false true 6235000000 6235 [1] false false 3 false true 5464000000 5464 [1] false false No definition available. No authoritative reference available. false 76 Sempra Energy Consolidated | Deferred Compensation Relating to ESOP 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 77 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true -18000000 -18 [1] false false 2 false true -22000000 -22 [1] false false 3 false true -25000000 -25 false false No definition available. No authoritative reference available. false 79 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 94 Common stock released from ESOP 2 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 5000000 5 false false 2 false true 4000000 4 [1] false false 3 false true 3000000 3 [1] false false No definition available. No authoritative reference available. false 100 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true -13000000 -13 false false 2 false true -18000000 -18 [1] false false 3 false true -22000000 -22 [1] false false No definition available. No authoritative reference available. false 101 Sempra Energy Consolidated | Accumulated Other Comprehensive Income (Loss) 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 102 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true -513000000 -513 [1] false false 2 false true -301000000 -301 [1] false false 3 false true -390000000 -390 false false No definition available. No authoritative reference available. false 104 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 105 Foreign currency translation adjustments 2 us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 102000000 102 false false 2 false true -140000000 -140 [1] false false 3 false true 38000000 38 [1] false false No definition available. No authoritative reference available. false 106 Available-for-sale securities 2 us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 7000000 7 false false 2 false true -26000000 -26 [1] false false 3 false true 10000000 10 [1] false false No definition available. No authoritative reference available. false 107 Pension and other postretirement benefits 2 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true -3000000 -3 false false 2 false true -30000000 -30 [1] false false 3 false true 15000000 15 [1] false false No definition available. No authoritative reference available. false 108 Financial instruments 2 us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 38000000 38 false false 2 false true -16000000 -16 [1] false false 3 false true 26000000 26 [1] false false No definition available. No authoritative reference available. false 109 Comprehensive income (loss) 2 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 144000000 144 false false 2 false true -212000000 -212 [1] false false 3 false true 89000000 89 [1] false false No definition available. No authoritative reference available. true 125 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true -369000000 -369 false false 2 false true -513000000 -513 [1] false false 3 false true -301000000 -301 [1] false false No definition available. No authoritative reference available. false 126 Sempra Energy Consolidated | Total Shareholders' Equity 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 127 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 7969000000 7969 [1] false false 2 false true 8339000000 8339 [1] false false 3 false true 7511000000 7511 false false No definition available. No authoritative reference available. false 128 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 1129000000 1129 false false 2 false true 1123000000 1123 [1] false false 3 false true 1109000000 1109 [1] false false No definition available. No authoritative reference available. false 129 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 130 Foreign currency translation adjustments 2 us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 102000000 102 false false 2 false true -140000000 -140 [1] false false 3 false true 38000000 38 [1] false false No definition available. No authoritative reference available. false 131 Available-for-sale securities 2 us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 7000000 7 false false 2 false true -26000000 -26 [1] false false 3 false true 10000000 10 [1] false false No definition available. No authoritative reference available. false 132 Pension and other postretirement benefits 2 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true -3000000 -3 false false 2 false true -30000000 -30 [1] false false 3 false true 15000000 15 [1] false false No definition available. No authoritative reference available. false 133 Financial instruments 2 us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 38000000 38 false false 2 false true -16000000 -16 [1] false false 3 false true 26000000 26 [1] false false No definition available. No authoritative reference available. false 134 Comprehensive income (loss) 2 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 1273000000 1273 false false 2 false true 911000000 911 [1] false false 3 false true 1198000000 1198 [1] false false No definition available. No authoritative reference available. true 135 Adoption of new accounting principles 2 us-gaap_CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true 10000000 10 [1] false false No definition available. No authoritative reference available. false 136 Share-based compensation expense 2 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 38000000 38 false false 2 false true 49000000 49 [1] false false 3 false true 43000000 43 [1] false false No definition available. No authoritative reference available. false 137 Common stock dividends declared 2 us-gaap_DividendsCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -383000000 -383 false false 2 false true -342000000 -342 [1] false false 3 false true -326000000 -326 [1] false false No definition available. No authoritative reference available. false 139 Preferred dividends of subsidiaries 2 sre_PreferredStockDividendsOfSubsidiaries sre false debit duration monetary No definition available. false false false false false false false false false 1 false true -10000000 -10 false false 2 false true -10000000 -10 [1] false false 3 false true -10000000 -10 [1] false false No definition available. No authoritative reference available. false 140 Quasi-reorganization adjustment 2 sre_QuasiReorganizationAdjustment sre false credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -2000000 -2 [1] false false No definition available. No authoritative reference available. false 141 Issuance of common stock 2 us-gaap_StockIssuedDuringPeriodValueNewIssues us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 114000000 114 false false 2 false true 18000000 18 [1] false false 3 false true 62000000 62 [1] false false No definition available. No authoritative reference available. false 142 Tax benefit related to share-based compensation 2 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 23000000 23 false false 2 false true 6000000 6 [1] false false 3 false true 26000000 26 [1] false false No definition available. No authoritative reference available. false 143 Repurchases of common stock 2 us-gaap_StockRepurchasedDuringPeriodValue us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -22000000 -22 false false 2 false true -1018000000 -1018 [1] false false 3 false true -185000000 -185 [1] false false No definition available. No authoritative reference available. false 144 Common stock released from ESOP 2 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 15000000 15 false false 2 false true 16000000 16 [1] false false 3 false true 12000000 12 [1] false false No definition available. No authoritative reference available. false 149 Purchase of noncontrolling interest in subsidiary 2 us-gaap_MinorityInterestDecreaseFromRedemptions us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -10000000 -10 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 150 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 9007000000 9007 false false 2 false true 7969000000 7969 [1] false false 3 false true 8339000000 8339 [1] false false No definition available. No authoritative reference available. false 151 Sempra Energy Consolidated | Noncontrolling Interests 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 152 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 340000000 340 [1] false false 2 false true 248000000 248 [1] false false 3 false true 111000000 111 false false No definition available. No authoritative reference available. false 153 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -7000000 -7 false false 2 false true -55000000 -55 [1] false false 3 false true -17000000 -17 [1] false false No definition available. No authoritative reference available. false 154 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 158 Financial instruments 2 us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true -3000000 -3 false false 2 false true -14000000 -14 [1] false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 159 Comprehensive income (loss) 2 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -10000000 -10 false false 2 false true -69000000 -69 [1] false false 3 false true -17000000 -17 [1] false false No definition available. No authoritative reference available. true 170 Equity contributed by noncontrolling interests 2 us-gaap_MinorityInterestIncreaseFromStockIssuance us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 7000000 7 false false 2 false true 75000000 75 [1] false false 3 false true 2000000 2 [1] false false No definition available. No authoritative reference available. false 171 Distributions to noncontrolling interests 2 us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -9000000 -9 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 172 Initial consolidation of Otay Mesa VIE 2 sre_InitialConsolidationOfVariableInterestEntities sre false credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true 152000000 152 [1] false false No definition available. No authoritative reference available. false 173 EnergySouth acquisition 2 sre_AcquisitionOfNoncontrollingInterestsInSubsidiaries sre false credit instant monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true 86000000 86 [1] false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 174 Purchase of noncontrolling interest in subsidiary 2 us-gaap_MinorityInterestDecreaseFromRedemptions us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -84000000 -84 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 175 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 244000000 244 false false 2 false true 340000000 340 [1] false false 3 false true 248000000 248 [1] false false No definition available. No authoritative reference available. false 176 San Diego Gas and Electric Company and Subsidiary 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 177 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 2670000000 2670 [1] false false 2 false true 2335000000 2335 [1] false false 3 false true 1915000000 1915 false false No definition available. No authoritative reference available. false 178 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 373000000 373 false false 2 false true 290000000 290 [1] false false 3 false true 271000000 271 [1] false false No definition available. No authoritative reference available. false 179 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 182 Pension and other postretirement benefits 2 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 2000000 2 false false 2 false true 3000000 3 [1] false false 3 false true 4000000 4 [1] false false No definition available. No authoritative reference available. false 183 Financial instruments 2 us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true -2000000 -2 false false 2 false true -14000000 -14 [1] false false 3 false true -1000000 -1 [1] false false No definition available. No authoritative reference available. false 184 Comprehensive income (loss) 2 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 373000000 373 false false 2 false true 279000000 279 [1] false false 3 false true 274000000 274 [1] false false No definition available. No authoritative reference available. true 185 Adoption of new accounting principles 2 us-gaap_CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -1000000 -1 [1] false false No definition available. No authoritative reference available. false 187 Common stock dividends declared 2 us-gaap_DividendsCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -150000000 -150 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 188 Preferred stock dividends declared 2 us-gaap_DividendsPreferredStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -5000000 -5 false false 2 false true -5000000 -5 [1] false false 3 false true -5000000 -5 [1] false false No definition available. No authoritative reference available. false 195 Equity contributed by noncontrolling interests 2 us-gaap_MinorityInterestIncreaseFromStockIssuance us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 6000000 6 false false 2 false true 61000000 61 [1] false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 196 Distributions to noncontrolling interests 2 us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -9000000 -9 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 197 Initial consolidation of Otay Mesa VIE 2 sre_InitialConsolidationOfVariableInterestEntities sre false credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true 152000000 152 [1] false false No definition available. No authoritative reference available. false 200 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 2885000000 2885 false false 2 false true 2670000000 2670 [1] false false 3 false true 2335000000 2335 [1] false false No definition available. No authoritative reference available. false 201 San Diego Gas and Electric Company and Subsidiary | Common Stock 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 202 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 1138000000 1138 [1] false false 2 false true 1138000000 1138 [1] false false 3 false true 1138000000 1138 false false No definition available. No authoritative reference available. false 204 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 225 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 1138000000 1138 false false 2 false true 1138000000 1138 [1] false false 3 false true 1138000000 1138 [1] false false No definition available. No authoritative reference available. false 226 San Diego Gas and Electric Company and Subsidiary | Retained Earnings 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 227 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 1417000000 1417 [1] false false 2 false true 1078000000 1078 [1] false false 3 false true 796000000 796 false false No definition available. No authoritative reference available. false 228 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 349000000 349 false false 2 false true 344000000 344 [1] false false 3 false true 288000000 288 [1] false false No definition available. No authoritative reference available. false 229 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 235 Adoption of new accounting principles 2 us-gaap_CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -1000000 -1 [1] false false No definition available. No authoritative reference available. false 237 Common stock dividends declared 2 us-gaap_DividendsCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -150000000 -150 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 238 Preferred stock dividends declared 2 us-gaap_DividendsPreferredStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -5000000 -5 false false 2 false true -5000000 -5 [1] false false 3 false true -5000000 -5 [1] false false No definition available. No authoritative reference available. false 250 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 1611000000 1611 false false 2 false true 1417000000 1417 [1] false false 3 false true 1078000000 1078 [1] false false No definition available. No authoritative reference available. false 251 San Diego Gas and Electric Company and Subsidiary | Accumulated Other Comprehensive Income (Loss) 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 252 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true -13000000 -13 [1] false false 2 false true -16000000 -16 [1] false false 3 false true -19000000 -19 false false No definition available. No authoritative reference available. false 254 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 257 Pension and other postretirement benefits 2 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 2000000 2 false false 2 false true 3000000 3 [1] false false 3 false true 4000000 4 [1] false false No definition available. No authoritative reference available. false 258 Financial instruments 2 us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 1000000 1 false false 2 false false 0 0 false false 3 false true -1000000 -1 [1] false false No definition available. No authoritative reference available. false 259 Comprehensive income (loss) 2 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 3000000 3 false false 2 false true 3000000 3 [1] false false 3 false true 3000000 3 [1] false false No definition available. No authoritative reference available. true 275 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true -10000000 -10 false false 2 false true -13000000 -13 [1] false false 3 false true -16000000 -16 [1] false false No definition available. No authoritative reference available. false 276 San Diego Gas and Electric Company and Subsidiary | Total Shareholders' Equity 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 277 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 2542000000 2542 [1] false false 2 false true 2200000000 2200 [1] false false 3 false true 1915000000 1915 false false No definition available. No authoritative reference available. false 278 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 349000000 349 false false 2 false true 344000000 344 [1] false false 3 false true 288000000 288 [1] false false No definition available. No authoritative reference available. false 279 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 282 Pension and other postretirement benefits 2 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 2000000 2 false false 2 false true 3000000 3 [1] false false 3 false true 4000000 4 [1] false false No definition available. No authoritative reference available. false 283 Financial instruments 2 us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 1000000 1 false false 2 false false 0 0 false false 3 false true -1000000 -1 [1] false false No definition available. No authoritative reference available. false 284 Comprehensive income (loss) 2 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 352000000 352 false false 2 false true 347000000 347 [1] false false 3 false true 291000000 291 [1] false false No definition available. No authoritative reference available. true 285 Adoption of new accounting principles 2 us-gaap_CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -1000000 -1 [1] false false No definition available. No authoritative reference available. false 287 Common stock dividends declared 2 us-gaap_DividendsCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -150000000 -150 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 288 Preferred stock dividends declared 2 us-gaap_DividendsPreferredStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -5000000 -5 false false 2 false true -5000000 -5 [1] false false 3 false true -5000000 -5 [1] false false No definition available. No authoritative reference available. false 300 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 2739000000 2739 false false 2 false true 2542000000 2542 [1] false false 3 false true 2200000000 2200 [1] false false No definition available. No authoritative reference available. false 301 San Diego Gas and Electric Company and Subsidiary | Noncontrolling Interests 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 302 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 128000000 128 [1] false false 2 false true 135000000 135 [1] false false 3 false true 0 0 false false No definition available. No authoritative reference available. false 303 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 24000000 24 false false 2 false true -54000000 -54 [1] false false 3 false true -17000000 -17 [1] false false No definition available. No authoritative reference available. false 304 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 308 Financial instruments 2 us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true -3000000 -3 false false 2 false true -14000000 -14 [1] false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 309 Comprehensive income (loss) 2 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 21000000 21 false false 2 false true -68000000 -68 [1] false false 3 false true -17000000 -17 [1] false false No definition available. No authoritative reference available. true 320 Equity contributed by noncontrolling interests 2 us-gaap_MinorityInterestIncreaseFromStockIssuance us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 6000000 6 false false 2 false true 61000000 61 [1] false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 321 Distributions to noncontrolling interests 2 us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -9000000 -9 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 322 Initial consolidation of Otay Mesa VIE 2 sre_InitialConsolidationOfVariableInterestEntities sre false credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true 152000000 152 [1] false false No definition available. No authoritative reference available. false 325 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 146000000 146 false false 2 false true 128000000 128 [1] false false 3 false true 135000000 135 [1] false false No definition available. No authoritative reference available. false 326 Pacific Enterprises and Subsidiaries 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 327 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 1960000000 1960 [1] false false 2 false true 1936000000 1936 [1] false false 3 false true 1950000000 1950 false false No definition available. No authoritative reference available. false 328 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 270000000 270 false false 2 false true 253000000 253 [1] false false 3 false true 243000000 243 [1] false false No definition available. No authoritative reference available. false 329 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 332 Pension and other postretirement benefits 2 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true 1000000 1 [1] false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 333 Financial instruments 2 us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 3000000 3 false false 2 false true -25000000 -25 [1] false false 3 false true 1000000 1 [1] false false No definition available. No authoritative reference available. false 334 Comprehensive income (loss) 2 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 273000000 273 false false 2 false true 229000000 229 [1] false false 3 false true 244000000 244 [1] false false No definition available. No authoritative reference available. true 335 Adoption of new accounting principles 2 us-gaap_CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -1000000 -1 [1] false false No definition available. No authoritative reference available. false 337 Common stock dividends declared 2 us-gaap_DividendsCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true -200000000 -200 [1] false false 3 false true -250000000 -250 [1] false false No definition available. No authoritative reference available. false 338 Preferred stock dividends declared 2 us-gaap_DividendsPreferredStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -4000000 -4 false false 2 false true -4000000 -4 [1] false false 3 false true -4000000 -4 [1] false false No definition available. No authoritative reference available. false 339 Preferred dividends of subsidiaries 2 sre_PreferredStockDividendsOfSubsidiaries sre false debit duration monetary No definition available. false false false false false false false false false 1 false true -1000000 -1 false false 2 false true -1000000 -1 [1] false false 3 false true -1000000 -1 [1] false false No definition available. No authoritative reference available. false 340 Quasi-reorganization adjustment 2 sre_QuasiReorganizationAdjustment sre false credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -2000000 -2 [1] false false No definition available. No authoritative reference available. false 350 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 2228000000 2228 false false 2 false true 1960000000 1960 [1] false false 3 false true 1936000000 1936 [1] false false No definition available. No authoritative reference available. false 351 Pacific Enterprises and Subsidiaries | Preferred Stock 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 352 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 80000000 80 [1] false false 2 false true 80000000 80 [1] false false 3 false true 80000000 80 false false No definition available. No authoritative reference available. false 354 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 375 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 80000000 80 false false 2 false true 80000000 80 [1] false false 3 false true 80000000 80 [1] false false No definition available. No authoritative reference available. false 376 Pacific Enterprises and Subsidiaries | Common Stock 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 377 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 1462000000 1462 [1] false false 2 false true 1462000000 1462 [1] false false 3 false true 1464000000 1464 false false No definition available. No authoritative reference available. false 379 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 390 Quasi-reorganization adjustment 2 sre_QuasiReorganizationAdjustment sre false credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -2000000 -2 [1] false false No definition available. No authoritative reference available. false 400 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 1462000000 1462 false false 2 false true 1462000000 1462 [1] false false 3 false true 1462000000 1462 [1] false false No definition available. No authoritative reference available. false 401 Pacific Enterprises and Subsidiaries | Retained Earnings 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 402 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 426000000 426 [1] false false 2 false true 378000000 378 [1] false false 3 false true 391000000 391 false false No definition available. No authoritative reference available. false 403 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 270000000 270 false false 2 false true 253000000 253 [1] false false 3 false true 243000000 243 [1] false false No definition available. No authoritative reference available. false 404 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 410 Adoption of new accounting principles 2 us-gaap_CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -1000000 -1 [1] false false No definition available. No authoritative reference available. false 412 Common stock dividends declared 2 us-gaap_DividendsCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true -200000000 -200 [1] false false 3 false true -250000000 -250 [1] false false No definition available. No authoritative reference available. false 413 Preferred stock dividends declared 2 us-gaap_DividendsPreferredStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -4000000 -4 false false 2 false true -4000000 -4 [1] false false 3 false true -4000000 -4 [1] false false No definition available. No authoritative reference available. false 414 Preferred dividends of subsidiaries 2 sre_PreferredStockDividendsOfSubsidiaries sre false debit duration monetary No definition available. false false false false false false false false false 1 false true -1000000 -1 false false 2 false true -1000000 -1 [1] false false 3 false true -1000000 -1 [1] false false No definition available. No authoritative reference available. false 425 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 691000000 691 false false 2 false true 426000000 426 [1] false false 3 false true 378000000 378 [1] false false No definition available. No authoritative reference available. false 426 Pacific Enterprises and Subsidiaries | Accumulated Other Comprehensive Income (Loss) 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 427 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true -28000000 -28 [1] false false 2 false true -4000000 -4 [1] false false 3 false true -5000000 -5 false false No definition available. No authoritative reference available. false 429 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 432 Pension and other postretirement benefits 2 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true 1000000 1 [1] false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 433 Financial instruments 2 us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 3000000 3 false false 2 false true -25000000 -25 [1] false false 3 false true 1000000 1 [1] false false No definition available. No authoritative reference available. false 434 Comprehensive income (loss) 2 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 3000000 3 false false 2 false true -24000000 -24 [1] false false 3 false true 1000000 1 [1] false false No definition available. No authoritative reference available. true 450 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true -25000000 -25 false false 2 false true -28000000 -28 [1] false false 3 false true -4000000 -4 [1] false false No definition available. No authoritative reference available. false 451 Pacific Enterprises and Subsidiaries | Total Shareholders' Equity 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 452 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 1940000000 1940 [1] false false 2 false true 1916000000 1916 [1] false false 3 false true 1930000000 1930 false false No definition available. No authoritative reference available. false 453 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 270000000 270 false false 2 false true 253000000 253 [1] false false 3 false true 243000000 243 [1] false false No definition available. No authoritative reference available. false 454 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 457 Pension and other postretirement benefits 2 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true 1000000 1 [1] false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 458 Financial instruments 2 us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 3000000 3 false false 2 false true -25000000 -25 [1] false false 3 false true 1000000 1 [1] false false No definition available. No authoritative reference available. false 459 Comprehensive income (loss) 2 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 273000000 273 false false 2 false true 229000000 229 [1] false false 3 false true 244000000 244 [1] false false No definition available. No authoritative reference available. true 460 Adoption of new accounting principles 2 us-gaap_CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -1000000 -1 [1] false false No definition available. No authoritative reference available. false 462 Common stock dividends declared 2 us-gaap_DividendsCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true -200000000 -200 [1] false false 3 false true -250000000 -250 [1] false false No definition available. No authoritative reference available. false 463 Preferred stock dividends declared 2 us-gaap_DividendsPreferredStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -4000000 -4 false false 2 false true -4000000 -4 [1] false false 3 false true -4000000 -4 [1] false false No definition available. No authoritative reference available. false 464 Preferred dividends of subsidiaries 2 sre_PreferredStockDividendsOfSubsidiaries sre false debit duration monetary No definition available. false false false false false false false false false 1 false true -1000000 -1 false false 2 false true -1000000 -1 [1] false false 3 false true -1000000 -1 [1] false false No definition available. No authoritative reference available. false 465 Quasi-reorganization adjustment 2 sre_QuasiReorganizationAdjustment sre false credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -2000000 -2 [1] false false No definition available. No authoritative reference available. false 475 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 2208000000 2208 false false 2 false true 1940000000 1940 [1] false false 3 false true 1916000000 1916 [1] false false No definition available. No authoritative reference available. false 476 Pacific Enterprises and Subsidiaries | Noncontrolling Interests 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 477 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 20000000 20 [1] false false 2 false true 20000000 20 [1] false false 3 false true 20000000 20 false false No definition available. No authoritative reference available. false 479 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 500 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 20000000 20 false false 2 false true 20000000 20 [1] false false 3 false true 20000000 20 [1] false false No definition available. No authoritative reference available. false 501 Southern California Gas Company and Subsidiaries 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 502 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 1490000000 1490 false false 2 false true 1470000000 1470 false false 3 false true 1490000000 1490 false false No definition available. No authoritative reference available. false 503 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 274000000 274 false false 2 false true 245000000 245 false false 3 false true 231000000 231 false false No definition available. No authoritative reference available. false 504 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 507 Pension and other postretirement benefits 2 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true 1000000 1 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 508 Financial instruments 2 us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 3000000 3 false false 2 false true -25000000 -25 false false 3 false true 1000000 1 false false No definition available. No authoritative reference available. false 509 Comprehensive income (loss) 2 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 277000000 277 false false 2 false true 221000000 221 false false 3 false true 232000000 232 false false No definition available. No authoritative reference available. true 510 Adoption of new accounting principles 2 us-gaap_CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -1000000 -1 false false No definition available. No authoritative reference available. false 512 Common stock dividends declared 2 us-gaap_DividendsCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true -200000000 -200 false false 3 false true -250000000 -250 false false No definition available. No authoritative reference available. false 513 Preferred stock dividends declared 2 us-gaap_DividendsPreferredStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -1000000 -1 false false 2 false true -1000000 -1 false false 3 false true -1000000 -1 false false No definition available. No authoritative reference available. false 525 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 1766000000 1766 false false 2 false true 1490000000 1490 false false 3 false true 1470000000 1470 false false No definition available. No authoritative reference available. false 526 Southern California Gas Company and Subsidiaries | Preferred Stock 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 527 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 22000000 22 false false 2 false true 22000000 22 false false 3 false true 22000000 22 false false No definition available. No authoritative reference available. false 529 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 550 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 22000000 22 false false 2 false true 22000000 22 false false 3 false true 22000000 22 false false No definition available. No authoritative reference available. false 551 Southern California Gas Company and Subsidiaries | Common Stock 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 552 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 866000000 866 false false 2 false true 866000000 866 false false 3 false true 866000000 866 false false No definition available. No authoritative reference available. false 554 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 575 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 866000000 866 false false 2 false true 866000000 866 false false 3 false true 866000000 866 false false No definition available. No authoritative reference available. false 576 Southern California Gas Company and Subsidiaries | Retained Earnings 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 577 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true 630000000 630 false false 2 false true 586000000 586 false false 3 false true 607000000 607 false false No definition available. No authoritative reference available. false 578 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 274000000 274 false false 2 false true 245000000 245 false false 3 false true 231000000 231 false false No definition available. No authoritative reference available. false 579 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 585 Adoption of new accounting principles 2 us-gaap_CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -1000000 -1 false false No definition available. No authoritative reference available. false 587 Common stock dividends declared 2 us-gaap_DividendsCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true -200000000 -200 false false 3 false true -250000000 -250 false false No definition available. No authoritative reference available. false 588 Preferred stock dividends declared 2 us-gaap_DividendsPreferredStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -1000000 -1 false false 2 false true -1000000 -1 false false 3 false true -1000000 -1 false false No definition available. No authoritative reference available. false 600 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 false true 903000000 903 false false 2 false true 630000000 630 false false 3 false true 586000000 586 false false No definition available. No authoritative reference available. false 601 Southern California Gas Company and Subsidiaries | Accumulated Other Comprehensive Income (Loss) 0 na true na na na No definition available. false true false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 602 Equity, beginning of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false true false false 1 false true -28000000 -28 false false 2 false true -4000000 -4 false false 3 false true -5000000 -5 false false No definition available. No authoritative reference available. false 604 Comprehensive income adjustments: 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 607 Pension and other postretirement benefits 2 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true 1000000 1 false false 3 false false 0 0 false false No definition available. No authoritative reference available. false 608 Financial instruments 2 us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 3000000 3 false false 2 false true -25000000 -25 false false 3 false true 1000000 1 false false No definition available. No authoritative reference available. false 609 Comprehensive income (loss) 2 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 3000000 3 false false 2 false true -24000000 -24 false false 3 false true 1000000 1 false false No definition available. No authoritative reference available. true 625 Equity, end of period 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false true false 1 true true -25000000 -25 false false 2 true true -28000000 -28 false false 3 true true -4000000 -4 false false No definition available. No authoritative reference available. false 1 As adjusted for the retrospective adoption of ASC 810 (SFAS 160). false 3 232 false Millions UnKnown UnKnown false true