1.0.0.3 true CONDENSED CONSOLIDATED BALANCE SHEETS (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 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 No definition available. No authoritative reference available. false 2 Current assets: 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 No definition available. false 3 Cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 true true 756000000 756 false false 2 true true 331000000 331 false false No definition available. No authoritative reference available. false 4 Short-term investments 2 us-gaap_ShortTermInvestments us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 176000000 176 false false No definition available. No authoritative reference available. false 5 Restricted cash 2 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 27000000 27 false false 2 false true 27000000 27 false false No definition available. No authoritative reference available. false 6 Trade accounts receivable, net 2 us-gaap_AccountsReceivableNetCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 618000000 618 false false 2 false true 903000000 903 false false No definition available. No authoritative reference available. false 7 Other accounts and notes receivable, net 2 us-gaap_AccountsNotesAndLoansReceivableNetCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 126000000 126 false false 2 false true 78000000 78 false false No definition available. No authoritative reference available. false 8 Due from unconsolidated affiliates 2 us-gaap_DueFromAffiliateCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 19000000 19 false false 2 false true 4000000 4 false false No definition available. No authoritative reference available. false 9 Income taxes receivable 2 us-gaap_IncomeTaxesReceivable us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 139000000 139 false false 2 false true 195000000 195 false false No definition available. No authoritative reference available. false 10 Deferred income taxes, net current assets 2 us-gaap_DeferredTaxAssetsNetCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 117000000 117 false false 2 false true 31000000 31 false false No definition available. No authoritative reference available. false 11 Inventories 2 us-gaap_InventoryNet us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 296000000 296 false false 2 false true 320000000 320 false false No definition available. No authoritative reference available. false 13 Regulatory assets 2 us-gaap_RegulatoryAssetsCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 48000000 48 false false 2 false true 121000000 121 false false No definition available. No authoritative reference available. false 14 Fixed-price contracts and other derivatives, current assets 2 us-gaap_DerivativeAssetsCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 111000000 111 false false 2 false true 160000000 160 false false No definition available. No authoritative reference available. false 15 Insurance receivable related to wildfire litigation (Note 10) 2 us-gaap_InsuranceSettlementsReceivable us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 266000000 266 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 16 Other current assets 2 us-gaap_OtherAssetsCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 173000000 173 false false 2 false true 130000000 130 false false No definition available. No authoritative reference available. false 17 Total current assets 2 us-gaap_AssetsCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 2696000000 2696 false false 2 false true 2476000000 2476 false false No definition available. No authoritative reference available. true 18 Investments and other assets: 2 sre false 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 No definition available. false 21 Regulatory assets arising from fixed-price contracts and other derivatives - noncurrent 2 sre_RegulatoryAssetsArisingFromFixedPriceContractsAndOtherDerivativesNoncurrent sre false debit instant monetary No definition available. false false false false false false false false false 1 false true 232000000 232 false false 2 false true 264000000 264 false false No definition available. No authoritative reference available. false 22 Regulatory assets arising from pension and other postretirement benefit obligations 2 sre_RegulatoryAssetsArisingFromPensionAndOtherPostretirementBenefitObligations sre false debit instant monetary No definition available. false false false false false false false false false 1 false true 1218000000 1218 false false 2 false true 1188000000 1188 false false No definition available. No authoritative reference available. false 23 Other regulatory assets 2 us-gaap_RegulatoryAssetsNoncurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 568000000 568 false false 2 false true 534000000 534 false false No definition available. No authoritative reference available. false 24 Nuclear decommissioning trusts 2 us-gaap_DecommissioningFundInvestments us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 664000000 664 false false 2 false true 577000000 577 false false No definition available. No authoritative reference available. false 25 Investment in RBS Sempra Commodities LLP 2 sre_InvestmentInJointVenture sre false debit instant monetary No definition available. false false false false false false false false false 1 false true 2094000000 2094 false false 2 false true 2082000000 2082 false false No definition available. No authoritative reference available. false 26 Other investments 2 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 2019000000 2019 false false 2 false true 1166000000 1166 false false No definition available. No authoritative reference available. false 27 Goodwill and other intangible assets 2 sre_GoodwillAndOtherIntangibleAssets sre false debit instant monetary No definition available. false false false false false false false false false 1 false true 527000000 527 false false 2 false true 539000000 539 false false No definition available. No authoritative reference available. false 28 Sundry 2 us-gaap_OtherAssetsNoncurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 605000000 605 false false 2 false true 709000000 709 false false No definition available. No authoritative reference available. false 29 Total investments and other assets 2 sre_TotalInvestmentsAndOtherAssets sre false debit instant monetary No definition available. false false false false false false false false false 1 false true 7927000000 7927 false false 2 false true 7059000000 7059 false false No definition available. No authoritative reference available. true 30 Property, plant and equipment: 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 No definition available. false 31 Property, plant and equipment 2 us-gaap_PropertyPlantAndEquipmentGross us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 24379000000 24379 false false 2 false true 23153000000 23153 false false No definition available. No authoritative reference available. false 32 Less accumulated depreciation and amortization 2 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true -6607000000 -6607 false false 2 false true -6288000000 -6288 false false No definition available. No authoritative reference available. false 33 Property, plant and equipment, net 2 us-gaap_PropertyPlantAndEquipmentNet us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 17772000000 17772 false false 2 false true 16865000000 16865 false false No definition available. No authoritative reference available. true 34 Total assets 2 us-gaap_Assets us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 28395000000 28395 false false 2 false true 26400000000 26400 false false No definition available. No authoritative reference available. true 35 Current liabilities: 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 No definition available. false 36 Short-term debt 2 us-gaap_ShortTermBorrowings us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 851000000 851 false false 2 false true 503000000 503 [1] false false No definition available. No authoritative reference available. false 37 Accounts payable - trade 2 us-gaap_AccountsPayableTradeCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 436000000 436 false false 2 false true 606000000 606 [1] false false No definition available. No authoritative reference available. false 38 Accounts payable - other 2 us-gaap_AccountsPayableOtherCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 145000000 145 false false 2 false true 250000000 250 [1] false false No definition available. No authoritative reference available. false 39 Due to unconsolidated affiliates 2 us-gaap_DueToAffiliateCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 16000000 16 false false 2 false true 38000000 38 [1] false false No definition available. No authoritative reference available. false 42 Dividends and interest payable 2 us-gaap_InterestAndDividendsPayableCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 209000000 209 false false 2 false true 156000000 156 [1] false false No definition available. No authoritative reference available. false 43 Accrued compensation and benefits 2 us-gaap_EmployeeRelatedLiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 221000000 221 false false 2 false true 280000000 280 [1] false false No definition available. No authoritative reference available. false 44 Regulatory balancing accounts, net 2 sre_RegulatoryBalancingAccountsNet sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 605000000 605 false false 2 false true 335000000 335 [1] false false No definition available. No authoritative reference available. false 45 Current portion of long-term debt 2 us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 622000000 622 false false 2 false true 410000000 410 [1] false false No definition available. No authoritative reference available. false 46 Fixed-price contracts and other derivatives, current liabilities 2 us-gaap_DerivativeLiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 99000000 99 false false 2 false true 180000000 180 [1] false false No definition available. No authoritative reference available. false 47 Customer deposits 2 us-gaap_CustomerDepositsCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 145000000 145 false false 2 false true 170000000 170 [1] false false No definition available. No authoritative reference available. false 48 Reserve for wildfire litigation (Note 10) 2 us-gaap_LitigationReserveCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 289000000 289 false false 2 false true 0 0 [1] false false No definition available. No authoritative reference available. false 49 Other current liabilities 2 us-gaap_OtherLiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 672000000 672 false false 2 false true 684000000 684 [1] false false No definition available. No authoritative reference available. false 50 Total current liabilities 2 us-gaap_LiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 4310000000 4310 false false 2 false true 3612000000 3612 [1] false false No definition available. No authoritative reference available. true 51 Long-term debt 2 us-gaap_LongTermDebtAndCapitalLeaseObligations us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 6845000000 6845 false false 2 false true 6544000000 6544 [1] false false No definition available. No authoritative reference available. false 52 Deferred credits and other liabilities: 2 sre false 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 No definition available. false 53 Due to unconsolidated affiliate 2 us-gaap_DueToAffiliateNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 102000000 102 false false 2 false true 102000000 102 [1] false false No definition available. No authoritative reference available. false 54 Customer advances for construction 2 us-gaap_CustomerAdvancesForConstruction us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 144000000 144 false false 2 false true 155000000 155 [1] false false No definition available. No authoritative reference available. false 55 Pension and other postretirement benefit obligations, net of plan assets 2 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 1518000000 1518 false false 2 false true 1487000000 1487 [1] false false No definition available. No authoritative reference available. false 56 Deferred income taxes, net noncurrent liabilities 2 us-gaap_DeferredTaxLiabilitiesNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 1278000000 1278 false false 2 false true 946000000 946 [1] false false No definition available. No authoritative reference available. false 57 Deferred investment tax credits 2 us-gaap_AccumulatedDeferredInvestmentTaxCredit us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 54000000 54 false false 2 false true 57000000 57 [1] false false No definition available. No authoritative reference available. false 58 Regulatory liabilities arising from removal obligations 2 sre_RegulatoryLiabilitiesArisingFromRemovalObligations sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 2546000000 2546 false false 2 false true 2430000000 2430 [1] false false No definition available. No authoritative reference available. false 59 Asset retirement obligations 2 us-gaap_AssetRetirementObligationsNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 1212000000 1212 false false 2 false true 1159000000 1159 [1] false false No definition available. No authoritative reference available. false 61 Other regulatory liabilities 2 us-gaap_RegulatoryLiabilityNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 202000000 202 false false 2 false true 219000000 219 [1] false false No definition available. No authoritative reference available. false 62 Fixed-price contracts and other derivatives, noncurrent liabilities 2 us-gaap_DerivativeLiabilitiesNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 348000000 348 false false 2 false true 392000000 392 [1] false false No definition available. No authoritative reference available. false 63 Deferred credits and other 2 us-gaap_OtherLiabilitiesNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 774000000 774 false false 2 false true 909000000 909 [1] false false No definition available. No authoritative reference available. false 64 Total deferred credits and other liabilities 2 sre_TotalDeferredCreditsAndOtherLiabilities sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 8178000000 8178 false false 2 false true 7856000000 7856 [1] false false No definition available. No authoritative reference available. true 65 Contingently redeemable preferred stock 2 us-gaap_TemporaryEquityCarryingAmount us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 79000000 79 false false 2 false true 79000000 79 [1] false false No definition available. No authoritative reference available. false 66 Equity: 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 No definition available. false 67 Preferred Stock 2 us-gaap_PreferredStockValue us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 0 0 [1] false false No definition available. No authoritative reference available. false 68 Common Stock 2 us-gaap_CommonStockValue us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 2381000000 2381 false false 2 false true 2265000000 2265 [1] false false No definition available. No authoritative reference available. false 69 Retained earnings 2 us-gaap_RetainedEarningsAccumulatedDeficit us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 6779000000 6779 false false 2 false true 6235000000 6235 [1] false false No definition available. No authoritative reference available. false 70 Deferred compensation 2 us-gaap_DeferredCompensationEquity us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true -14000000 -14 false false 2 false true -18000000 -18 [1] false false No definition available. No authoritative reference available. false 71 Accumulated other comprehensive income (loss) 2 us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true -401000000 -401 false false 2 false true -513000000 -513 [1] false false No definition available. No authoritative reference available. false 72 Total shareholders' equity 2 us-gaap_StockholdersEquity us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 8745000000 8745 false false 2 false true 7969000000 7969 [1] false false No definition available. No authoritative reference available. true 73 Preferred stock of subsidiaries 2 sre_PreferredStockOfSubsidiaries sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 100000000 100 false false 2 false true 100000000 100 [1] false false No definition available. No authoritative reference available. false 74 Other noncontrolling interests 2 us-gaap_MinorityInterest us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 138000000 138 false false 2 false true 240000000 240 [1] false false No definition available. No authoritative reference available. false 75 Total equity 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 8983000000 8983 false false 2 false true 8309000000 8309 [1] false false No definition available. No authoritative reference available. true 76 Total liabilities and equity 2 us-gaap_LiabilitiesAndStockholdersEquity us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 28395000000 28395 false false 2 false true 26400000000 26400 [1] false false No definition available. No authoritative reference available. true 77 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 No definition available. No authoritative reference available. false 78 Current assets: 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 No definition available. false 79 Cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 291000000 291 false false 2 false true 19000000 19 false false No definition available. No authoritative reference available. false 80 Short-term investments 2 us-gaap_ShortTermInvestments us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 24000000 24 false false No definition available. No authoritative reference available. false 82 Trade accounts receivable, net 2 us-gaap_AccountsReceivableNetCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 275000000 275 false false 2 false true 225000000 225 false false No definition available. No authoritative reference available. false 83 Other accounts and notes receivable, net 2 us-gaap_AccountsNotesAndLoansReceivableNetCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 66000000 66 false false 2 false true 30000000 30 false false No definition available. No authoritative reference available. false 84 Due from unconsolidated affiliates 2 us-gaap_DueFromAffiliateCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 5000000 5 false false 2 false true 29000000 29 false false No definition available. No authoritative reference available. false 85 Income taxes receivable 2 us-gaap_IncomeTaxesReceivable us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 51000000 51 false false 2 false true 22000000 22 false false No definition available. No authoritative reference available. false 86 Deferred income taxes, net current assets 2 us-gaap_DeferredTaxAssetsNetCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 42000000 42 false false 2 false true 17000000 17 false false No definition available. No authoritative reference available. false 87 Inventories 2 us-gaap_InventoryNet us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 67000000 67 false false 2 false true 62000000 62 false false No definition available. No authoritative reference available. false 88 Regulatory assets arising from fixed-price contracts and other derivatives - current 2 sre_RegulatoryAssetsArisingFromFixedPriceContractsAndOtherDerivativesCurrent sre false debit instant monetary No definition available. false false false false false false false false false 1 false true 32000000 32 false false 2 false true 94000000 94 false false No definition available. No authoritative reference available. false 89 Regulatory assets 2 us-gaap_RegulatoryAssetsCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 5000000 5 false false 2 false true 8000000 8 false false No definition available. No authoritative reference available. false 90 Fixed-price contracts and other derivatives, current assets 2 us-gaap_DerivativeAssetsCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 61000000 61 false false 2 false true 39000000 39 false false No definition available. No authoritative reference available. false 91 Insurance receivable related to wildfire litigation (Note 10) 2 us-gaap_InsuranceSettlementsReceivable us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 266000000 266 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 92 Other current assets 2 us-gaap_OtherAssetsCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 49000000 49 false false 2 false true 15000000 15 false false No definition available. No authoritative reference available. false 93 Total current assets 2 us-gaap_AssetsCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 1210000000 1210 false false 2 false true 584000000 584 false false No definition available. No authoritative reference available. true 94 Investments and other assets: 2 sre false 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 No definition available. false 95 Due from unconsolidated affiliate 2 us-gaap_DueFromAffiliateNoncurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 3000000 3 false false 2 false true 4000000 4 false false No definition available. No authoritative reference available. false 96 Deferred taxes recoverable in rates 2 sre_DeferredIncomeTaxesRecoverableInRates sre false debit instant monetary No definition available. false false false false false false false false false 1 false true 399000000 399 false false 2 false true 369000000 369 false false No definition available. No authoritative reference available. false 97 Regulatory assets arising from fixed-price contracts and other derivatives - noncurrent 2 sre_RegulatoryAssetsArisingFromFixedPriceContractsAndOtherDerivativesNoncurrent sre false debit instant monetary No definition available. false false false false false false false false false 1 false true 232000000 232 false false 2 false true 264000000 264 false false No definition available. No authoritative reference available. false 98 Regulatory assets arising from pension and other postretirement benefit obligations 2 sre_RegulatoryAssetsArisingFromPensionAndOtherPostretirementBenefitObligations sre false debit instant monetary No definition available. false false false false false false false false false 1 false true 393000000 393 false false 2 false true 393000000 393 false false No definition available. No authoritative reference available. false 99 Other regulatory assets 2 us-gaap_RegulatoryAssetsNoncurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 55000000 55 false false 2 false true 59000000 59 false false No definition available. No authoritative reference available. false 100 Nuclear decommissioning trusts 2 us-gaap_DecommissioningFundInvestments us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 664000000 664 false false 2 false true 577000000 577 false false No definition available. No authoritative reference available. false 104 Sundry 2 us-gaap_OtherAssetsNoncurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 56000000 56 false false 2 false true 154000000 154 false false No definition available. No authoritative reference available. false 105 Total investments and other assets 2 sre_TotalInvestmentsAndOtherAssets sre false debit instant monetary No definition available. false false false false false false false false false 1 false true 1802000000 1802 false false 2 false true 1820000000 1820 false false No definition available. No authoritative reference available. true 106 Property, plant and equipment: 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 No definition available. false 107 Property, plant and equipment 2 us-gaap_PropertyPlantAndEquipmentGross us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 9797000000 9797 false false 2 false true 9095000000 9095 false false No definition available. No authoritative reference available. false 108 Less accumulated depreciation and amortization 2 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true -2535000000 -2535 false false 2 false true -2420000000 -2420 false false No definition available. No authoritative reference available. false 109 Property, plant and equipment, net 2 us-gaap_PropertyPlantAndEquipmentNet us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 7262000000 7262 false false 2 false true 6675000000 6675 false false No definition available. No authoritative reference available. true 110 Total assets 2 us-gaap_Assets us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 10274000000 10274 false false 2 false true 9079000000 9079 false false No definition available. No authoritative reference available. true 111 Current liabilities: 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 No definition available. false 113 Accounts payable - trade 2 us-gaap_AccountsPayableTradeCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 250000000 250 false false 2 false true 261000000 261 [1] false false No definition available. No authoritative reference available. false 115 Due to unconsolidated affiliates 2 us-gaap_DueToAffiliateCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 9000000 9 false false 2 false true 1000000 1 [1] false false No definition available. No authoritative reference available. false 119 Accrued compensation and benefits 2 us-gaap_EmployeeRelatedLiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 84000000 84 false false 2 false true 105000000 105 [1] false false No definition available. No authoritative reference available. false 120 Regulatory balancing accounts, net 2 sre_RegulatoryBalancingAccountsNet sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 321000000 321 false false 2 false true 114000000 114 [1] false false No definition available. No authoritative reference available. false 121 Current portion of long-term debt 2 us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 10000000 10 false false 2 false true 2000000 2 [1] false false No definition available. No authoritative reference available. false 122 Fixed-price contracts and other derivatives, current liabilities 2 us-gaap_DerivativeLiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 53000000 53 false false 2 false true 77000000 77 [1] false false No definition available. No authoritative reference available. false 123 Customer deposits 2 us-gaap_CustomerDepositsCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 54000000 54 false false 2 false true 53000000 53 [1] false false No definition available. No authoritative reference available. false 124 Reserve for wildfire litigation (Note 10) 2 us-gaap_LitigationReserveCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 289000000 289 false false 2 false true 0 0 [1] false false No definition available. No authoritative reference available. false 125 Other current liabilities 2 us-gaap_OtherLiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 201000000 201 false false 2 false true 163000000 163 [1] false false No definition available. No authoritative reference available. false 126 Total current liabilities 2 us-gaap_LiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 1271000000 1271 false false 2 false true 776000000 776 [1] false false No definition available. No authoritative reference available. true 127 Long-term debt 2 us-gaap_LongTermDebtAndCapitalLeaseObligations us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 2587000000 2587 false false 2 false true 2142000000 2142 [1] false false No definition available. No authoritative reference available. false 128 Deferred credits and other liabilities: 2 sre false 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 No definition available. false 130 Customer advances for construction 2 us-gaap_CustomerAdvancesForConstruction us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 21000000 21 false false 2 false true 26000000 26 [1] false false No definition available. No authoritative reference available. false 131 Pension and other postretirement benefit obligations, net of plan assets 2 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 419000000 419 false false 2 false true 419000000 419 [1] false false No definition available. No authoritative reference available. false 132 Deferred income taxes, net noncurrent liabilities 2 us-gaap_DeferredTaxLiabilitiesNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 721000000 721 false false 2 false true 628000000 628 [1] false false No definition available. No authoritative reference available. false 133 Deferred investment tax credits 2 us-gaap_AccumulatedDeferredInvestmentTaxCredit us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 25000000 25 false false 2 false true 26000000 26 [1] false false No definition available. No authoritative reference available. false 134 Regulatory liabilities arising from removal obligations 2 sre_RegulatoryLiabilitiesArisingFromRemovalObligations sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 1308000000 1308 false false 2 false true 1212000000 1212 [1] false false No definition available. No authoritative reference available. false 135 Asset retirement obligations 2 us-gaap_AssetRetirementObligationsNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 575000000 575 false false 2 false true 550000000 550 [1] false false No definition available. No authoritative reference available. false 138 Fixed-price contracts and other derivatives, noncurrent liabilities 2 us-gaap_DerivativeLiabilitiesNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 287000000 287 false false 2 false true 347000000 347 [1] false false No definition available. No authoritative reference available. false 139 Deferred credits and other 2 us-gaap_OtherLiabilitiesNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 168000000 168 false false 2 false true 204000000 204 [1] false false No definition available. No authoritative reference available. false 140 Total deferred credits and other liabilities 2 sre_TotalDeferredCreditsAndOtherLiabilities sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 3524000000 3524 false false 2 false true 3412000000 3412 [1] false false No definition available. No authoritative reference available. true 141 Contingently redeemable preferred stock 2 us-gaap_TemporaryEquityCarryingAmount us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 79000000 79 false false 2 false true 79000000 79 [1] false false No definition available. No authoritative reference available. false 142 Equity: 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 No definition available. false 144 Common Stock 2 us-gaap_CommonStockValue us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 1138000000 1138 false false 2 false true 1138000000 1138 [1] false false No definition available. No authoritative reference available. false 145 Retained earnings 2 us-gaap_RetainedEarningsAccumulatedDeficit us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 1544000000 1544 false false 2 false true 1417000000 1417 [1] false false No definition available. No authoritative reference available. false 147 Accumulated other comprehensive income (loss) 2 us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true -10000000 -10 false false 2 false true -13000000 -13 [1] false false No definition available. No authoritative reference available. false 148 Total shareholders' equity 2 us-gaap_StockholdersEquity us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 2672000000 2672 false false 2 false true 2542000000 2542 [1] false false No definition available. No authoritative reference available. true 150 Other noncontrolling interests 2 us-gaap_MinorityInterest us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 141000000 141 false false 2 false true 128000000 128 [1] false false No definition available. No authoritative reference available. false 151 Total equity 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 2813000000 2813 false false 2 false true 2670000000 2670 [1] false false No definition available. No authoritative reference available. true 152 Total liabilities and equity 2 us-gaap_LiabilitiesAndStockholdersEquity us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 10274000000 10274 false false 2 false true 9079000000 9079 [1] false false No definition available. No authoritative reference available. true 153 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 No definition available. No authoritative reference available. false 154 Current assets: 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 No definition available. false 155 Cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 418000000 418 false false 2 false true 206000000 206 false false No definition available. No authoritative reference available. false 158 Trade accounts receivable, net 2 us-gaap_AccountsReceivableNetCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 252000000 252 false false 2 false true 572000000 572 false false No definition available. No authoritative reference available. false 159 Other accounts and notes receivable, net 2 us-gaap_AccountsNotesAndLoansReceivableNetCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 29000000 29 false false 2 false true 20000000 20 false false No definition available. No authoritative reference available. false 160 Due from unconsolidated affiliates 2 us-gaap_DueFromAffiliateCurrent us-gaap true debit instant 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 false false No definition available. No authoritative reference available. false 161 Income taxes receivable 2 us-gaap_IncomeTaxesReceivable us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 108000000 108 false false No definition available. No authoritative reference available. false 162 Deferred income taxes, net current assets 2 us-gaap_DeferredTaxAssetsNetCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 9000000 9 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 163 Inventories 2 us-gaap_InventoryNet us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 189000000 189 false false 2 false true 167000000 167 false false No definition available. No authoritative reference available. false 165 Regulatory assets 2 us-gaap_RegulatoryAssetsCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 11000000 11 false false 2 false true 18000000 18 false false No definition available. No authoritative reference available. false 168 Other current assets 2 us-gaap_OtherAssetsCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 39000000 39 false false 2 false true 37000000 37 false false No definition available. No authoritative reference available. false 169 Total current assets 2 us-gaap_AssetsCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 952000000 952 false false 2 false true 1133000000 1133 false false No definition available. No authoritative reference available. true 170 Investments and other assets: 2 sre false 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 No definition available. false 171 Due from unconsolidated affiliate 2 us-gaap_DueFromAffiliateNoncurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 514000000 514 false false 2 false true 457000000 457 false false No definition available. No authoritative reference available. false 174 Regulatory assets arising from pension and other postretirement benefit obligations 2 sre_RegulatoryAssetsArisingFromPensionAndOtherPostretirementBenefitObligations sre false debit instant monetary No definition available. false false false false false false false false false 1 false true 825000000 825 false false 2 false true 795000000 795 false false No definition available. No authoritative reference available. false 175 Other regulatory assets 2 us-gaap_RegulatoryAssetsNoncurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 114000000 114 false false 2 false true 105000000 105 false false No definition available. No authoritative reference available. false 180 Sundry 2 us-gaap_OtherAssetsNoncurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 42000000 42 false false 2 false true 49000000 49 false false No definition available. No authoritative reference available. false 181 Total investments and other assets 2 sre_TotalInvestmentsAndOtherAssets sre false debit instant monetary No definition available. false false false false false false false false false 1 false true 1495000000 1495 false false 2 false true 1406000000 1406 false false No definition available. No authoritative reference available. true 182 Property, plant and equipment: 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 No definition available. false 183 Property, plant and equipment 2 us-gaap_PropertyPlantAndEquipmentGross us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 9083000000 9083 false false 2 false true 8816000000 8816 false false No definition available. No authoritative reference available. false 184 Less accumulated depreciation and amortization 2 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true -3557000000 -3557 false false 2 false true -3448000000 -3448 false false No definition available. No authoritative reference available. false 185 Property, plant and equipment, net 2 us-gaap_PropertyPlantAndEquipmentNet us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 5526000000 5526 false false 2 false true 5368000000 5368 false false No definition available. No authoritative reference available. true 186 Total assets 2 us-gaap_Assets us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 7973000000 7973 false false 2 false true 7907000000 7907 false false No definition available. No authoritative reference available. true 187 Current liabilities: 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 No definition available. false 189 Accounts payable - trade 2 us-gaap_AccountsPayableTradeCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 121000000 121 false false 2 false true 257000000 257 [1] false false No definition available. No authoritative reference available. false 190 Accounts payable - other 2 us-gaap_AccountsPayableOtherCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 105000000 105 false false 2 false true 163000000 163 [1] false false No definition available. No authoritative reference available. false 191 Due to unconsolidated affiliates 2 us-gaap_DueToAffiliateCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 100000000 100 false false 2 false true 106000000 106 [1] false false No definition available. No authoritative reference available. false 192 Income taxes payable 2 us-gaap_AccruedIncomeTaxesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 2000000 2 false false 2 false true 0 0 [1] false false No definition available. No authoritative reference available. false 193 Deferred income taxes, net current liabilities 2 us-gaap_DeferredTaxLiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 6000000 6 [1] false false No definition available. No authoritative reference available. false 195 Accrued compensation and benefits 2 us-gaap_EmployeeRelatedLiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 81000000 81 false false 2 false true 92000000 92 [1] false false No definition available. No authoritative reference available. false 196 Regulatory balancing accounts, net 2 sre_RegulatoryBalancingAccountsNet sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 284000000 284 false false 2 false true 221000000 221 [1] false false No definition available. No authoritative reference available. false 197 Current portion of long-term debt 2 us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 101000000 101 false false 2 false true 100000000 100 [1] false false No definition available. No authoritative reference available. false 199 Customer deposits 2 us-gaap_CustomerDepositsCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 89000000 89 false false 2 false true 114000000 114 [1] false false No definition available. No authoritative reference available. false 201 Other current liabilities 2 us-gaap_OtherLiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 175000000 175 false false 2 false true 213000000 213 [1] false false No definition available. No authoritative reference available. false 202 Total current liabilities 2 us-gaap_LiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 1058000000 1058 false false 2 false true 1272000000 1272 [1] false false No definition available. No authoritative reference available. true 203 Long-term debt 2 us-gaap_LongTermDebtAndCapitalLeaseObligations us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 1269000000 1269 false false 2 false true 1270000000 1270 [1] false false No definition available. No authoritative reference available. false 204 Deferred credits and other liabilities: 2 sre false 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 No definition available. false 206 Customer advances for construction 2 us-gaap_CustomerAdvancesForConstruction us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 123000000 123 false false 2 false true 131000000 131 [1] false false No definition available. No authoritative reference available. false 207 Pension and other postretirement benefit obligations, net of plan assets 2 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 850000000 850 false false 2 false true 823000000 823 [1] false false No definition available. No authoritative reference available. false 208 Deferred income taxes, net noncurrent liabilities 2 us-gaap_DeferredTaxLiabilitiesNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 218000000 218 false false 2 false true 157000000 157 [1] false false No definition available. No authoritative reference available. false 209 Deferred investment tax credits 2 us-gaap_AccumulatedDeferredInvestmentTaxCredit us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 28000000 28 false false 2 false true 30000000 30 [1] false false No definition available. No authoritative reference available. false 210 Regulatory liabilities arising from removal obligations 2 sre_RegulatoryLiabilitiesArisingFromRemovalObligations sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 1238000000 1238 false false 2 false true 1218000000 1218 [1] false false No definition available. No authoritative reference available. false 211 Asset retirement obligations 2 us-gaap_AssetRetirementObligationsNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 607000000 607 false false 2 false true 581000000 581 [1] false false No definition available. No authoritative reference available. false 212 Deferred taxes refundable in rates 2 sre_DeferredTaxesRefundableInRates sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 196000000 196 false false 2 false true 214000000 214 [1] false false No definition available. No authoritative reference available. false 215 Deferred credits and other 2 us-gaap_OtherLiabilitiesNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 233000000 233 false false 2 false true 251000000 251 [1] false false No definition available. No authoritative reference available. false 216 Total deferred credits and other liabilities 2 sre_TotalDeferredCreditsAndOtherLiabilities sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 3493000000 3493 false false 2 false true 3405000000 3405 [1] false false No definition available. No authoritative reference available. true 218 Equity: 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 No definition available. false 219 Preferred Stock 2 us-gaap_PreferredStockValue us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 80000000 80 false false 2 false true 80000000 80 [1] false false No definition available. No authoritative reference available. false 220 Common Stock 2 us-gaap_CommonStockValue us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 1462000000 1462 false false 2 false true 1462000000 1462 [1] false false No definition available. No authoritative reference available. false 221 Retained earnings 2 us-gaap_RetainedEarningsAccumulatedDeficit us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 617000000 617 false false 2 false true 426000000 426 [1] false false No definition available. No authoritative reference available. false 223 Accumulated other comprehensive income (loss) 2 us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true -26000000 -26 false false 2 false true -28000000 -28 [1] false false No definition available. No authoritative reference available. false 224 Total shareholders' equity 2 us-gaap_StockholdersEquity us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 2133000000 2133 false false 2 false true 1940000000 1940 [1] false false No definition available. No authoritative reference available. true 225 Preferred stock of subsidiaries 2 sre_PreferredStockOfSubsidiaries sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 20000000 20 false false 2 false true 20000000 20 [1] false false No definition available. No authoritative reference available. false 227 Total equity 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 2153000000 2153 false false 2 false true 1960000000 1960 [1] false false No definition available. No authoritative reference available. true 228 Total liabilities and equity 2 us-gaap_LiabilitiesAndStockholdersEquity us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 7973000000 7973 false false 2 false true 7907000000 7907 [1] false false No definition available. No authoritative reference available. true 229 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 No definition available. No authoritative reference available. false 230 Current assets: 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 No definition available. false 231 Cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 418000000 418 false false 2 false true 206000000 206 false false No definition available. No authoritative reference available. false 234 Trade accounts receivable, net 2 us-gaap_AccountsReceivableNetCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 252000000 252 false false 2 false true 572000000 572 false false No definition available. No authoritative reference available. false 235 Other accounts and notes receivable, net 2 us-gaap_AccountsNotesAndLoansReceivableNetCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 27000000 27 false false 2 false true 20000000 20 false false No definition available. No authoritative reference available. false 237 Income taxes receivable 2 us-gaap_IncomeTaxesReceivable us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 41000000 41 false false No definition available. No authoritative reference available. false 238 Deferred income taxes, net current assets 2 us-gaap_DeferredTaxAssetsNetCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 9000000 9 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 239 Inventories 2 us-gaap_InventoryNet us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 189000000 189 false false 2 false true 167000000 167 false false No definition available. No authoritative reference available. false 241 Regulatory assets 2 us-gaap_RegulatoryAssetsCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 11000000 11 false false 2 false true 18000000 18 false false No definition available. No authoritative reference available. false 244 Other current assets 2 us-gaap_OtherAssetsCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 39000000 39 false false 2 false true 37000000 37 false false No definition available. No authoritative reference available. false 245 Total current assets 2 us-gaap_AssetsCurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 945000000 945 false false 2 false true 1061000000 1061 false false No definition available. No authoritative reference available. true 246 Investments and other assets: 2 sre false 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 No definition available. false 250 Regulatory assets arising from pension and other postretirement benefit obligations 2 sre_RegulatoryAssetsArisingFromPensionAndOtherPostretirementBenefitObligations sre false debit instant monetary No definition available. false false false false false false false false false 1 false true 825000000 825 false false 2 false true 795000000 795 false false No definition available. No authoritative reference available. false 251 Other regulatory assets 2 us-gaap_RegulatoryAssetsNoncurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 114000000 114 false false 2 false true 105000000 105 false false No definition available. No authoritative reference available. false 256 Sundry 2 us-gaap_OtherAssetsNoncurrent us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 15000000 15 false false 2 false true 24000000 24 false false No definition available. No authoritative reference available. false 257 Total investments and other assets 2 sre_TotalInvestmentsAndOtherAssets sre false debit instant monetary No definition available. false false false false false false false false false 1 false true 954000000 954 false false 2 false true 924000000 924 false false No definition available. No authoritative reference available. true 258 Property, plant and equipment: 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 No definition available. false 259 Property, plant and equipment 2 us-gaap_PropertyPlantAndEquipmentGross us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 9081000000 9081 false false 2 false true 8814000000 8814 false false No definition available. No authoritative reference available. false 260 Less accumulated depreciation and amortization 2 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true -3557000000 -3557 false false 2 false true -3448000000 -3448 false false No definition available. No authoritative reference available. false 261 Property, plant and equipment, net 2 us-gaap_PropertyPlantAndEquipmentNet us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 5524000000 5524 false false 2 false true 5366000000 5366 false false No definition available. No authoritative reference available. true 262 Total assets 2 us-gaap_Assets us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false true 7423000000 7423 false false 2 false true 7351000000 7351 false false No definition available. No authoritative reference available. true 263 Current liabilities: 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 No definition available. false 265 Accounts payable - trade 2 us-gaap_AccountsPayableTradeCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 121000000 121 false false 2 false true 257000000 257 false false No definition available. No authoritative reference available. false 266 Accounts payable - other 2 us-gaap_AccountsPayableOtherCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 102000000 102 false false 2 false true 163000000 163 false false No definition available. No authoritative reference available. false 267 Due to unconsolidated affiliates 2 us-gaap_DueToAffiliateCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 13000000 13 false false 2 false true 23000000 23 false false No definition available. No authoritative reference available. false 268 Income taxes payable 2 us-gaap_AccruedIncomeTaxesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 4000000 4 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 269 Deferred income taxes, net current liabilities 2 us-gaap_DeferredTaxLiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 6000000 6 false false No definition available. No authoritative reference available. false 271 Accrued compensation and benefits 2 us-gaap_EmployeeRelatedLiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 81000000 81 false false 2 false true 92000000 92 false false No definition available. No authoritative reference available. false 272 Regulatory balancing accounts, net 2 sre_RegulatoryBalancingAccountsNet sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 284000000 284 false false 2 false true 221000000 221 false false No definition available. No authoritative reference available. false 273 Current portion of long-term debt 2 us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 101000000 101 false false 2 false true 100000000 100 false false No definition available. No authoritative reference available. false 275 Customer deposits 2 us-gaap_CustomerDepositsCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 89000000 89 false false 2 false true 114000000 114 false false No definition available. No authoritative reference available. false 277 Other current liabilities 2 us-gaap_OtherLiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 175000000 175 false false 2 false true 211000000 211 false false No definition available. No authoritative reference available. false 278 Total current liabilities 2 us-gaap_LiabilitiesCurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 970000000 970 false false 2 false true 1187000000 1187 false false No definition available. No authoritative reference available. true 279 Long-term debt 2 us-gaap_LongTermDebtAndCapitalLeaseObligations us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 1269000000 1269 false false 2 false true 1270000000 1270 false false No definition available. No authoritative reference available. false 280 Deferred credits and other liabilities: 2 sre false 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 No definition available. false 282 Customer advances for construction 2 us-gaap_CustomerAdvancesForConstruction us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 123000000 123 false false 2 false true 131000000 131 false false No definition available. No authoritative reference available. false 283 Pension and other postretirement benefit obligations, net of plan assets 2 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 850000000 850 false false 2 false true 823000000 823 false false No definition available. No authoritative reference available. false 284 Deferred income taxes, net noncurrent liabilities 2 us-gaap_DeferredTaxLiabilitiesNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 226000000 226 false false 2 false true 167000000 167 false false No definition available. No authoritative reference available. false 285 Deferred investment tax credits 2 us-gaap_AccumulatedDeferredInvestmentTaxCredit us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 28000000 28 false false 2 false true 30000000 30 false false No definition available. No authoritative reference available. false 286 Regulatory liabilities arising from removal obligations 2 sre_RegulatoryLiabilitiesArisingFromRemovalObligations sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 1238000000 1238 false false 2 false true 1218000000 1218 false false No definition available. No authoritative reference available. false 287 Asset retirement obligations 2 us-gaap_AssetRetirementObligationsNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 607000000 607 false false 2 false true 581000000 581 false false No definition available. No authoritative reference available. false 288 Deferred taxes refundable in rates 2 sre_DeferredTaxesRefundableInRates sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 196000000 196 false false 2 false true 214000000 214 false false No definition available. No authoritative reference available. false 291 Deferred credits and other 2 us-gaap_OtherLiabilitiesNoncurrent us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 226000000 226 false false 2 false true 240000000 240 false false No definition available. No authoritative reference available. false 292 Total deferred credits and other liabilities 2 sre_TotalDeferredCreditsAndOtherLiabilities sre false credit instant monetary No definition available. false false false false false false false false false 1 false true 3494000000 3494 false false 2 false true 3404000000 3404 false false No definition available. No authoritative reference available. true 294 Equity: 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 No definition available. false 295 Preferred Stock 2 us-gaap_PreferredStockValue us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 22000000 22 false false 2 false true 22000000 22 false false No definition available. No authoritative reference available. false 296 Common Stock 2 us-gaap_CommonStockValue us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 866000000 866 false false 2 false true 866000000 866 false false No definition available. No authoritative reference available. false 297 Retained earnings 2 us-gaap_RetainedEarningsAccumulatedDeficit us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 828000000 828 false false 2 false true 630000000 630 false false No definition available. No authoritative reference available. false 299 Accumulated other comprehensive income (loss) 2 us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true -26000000 -26 false false 2 false true -28000000 -28 false false No definition available. No authoritative reference available. false 300 Total shareholders' equity 2 us-gaap_StockholdersEquity us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 1690000000 1690 false false 2 false true 1490000000 1490 false false No definition available. No authoritative reference available. true 303 Total equity 2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 1690000000 1690 false false 2 false true 1490000000 1490 false false No definition available. No authoritative reference available. true 304 Total liabilities and equity 2 us-gaap_LiabilitiesAndStockholdersEquity us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 true true 7423000000 7423 false false 2 true true 7351000000 7351 false false No definition available. No authoritative reference available. true 1 As adjusted for the retrospective adoption of ASC 810 (SFAS 160). false 2 238 false Millions UnKnown UnKnown false true