1.0.0.3 true 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 110000000 110 false false 2 true true 331000000 331 [1] 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 35000000 35 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 971000000 971 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 159000000 159 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 41000000 41 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 221000000 221 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 10000000 10 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 197000000 197 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 54000000 54 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 77000000 77 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 17) 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 273000000 273 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 147000000 147 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 2295000000 2295 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 241000000 241 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 959000000 959 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 603000000 603 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 678000000 678 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 2172000000 2172 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 2151000000 2151 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 524000000 524 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 608000000 608 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 7936000000 7936 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 25034000000 25034 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 -6753000000 -6753 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 18281000000 18281 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 28512000000 28512 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 618000000 618 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 522000000 522 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 171000000 171 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 29000000 29 false false 2 false true 38000000 38 [1] false false No definition available. No authoritative reference available. false 41 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 190000000 190 false false 2 false true 156000000 156 [1] false false No definition available. No authoritative reference available. false 42 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 264000000 264 false false 2 false true 280000000 280 [1] false false No definition available. No authoritative reference available. false 43 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 382000000 382 false false 2 false true 335000000 335 [1] false false No definition available. No authoritative reference available. false 44 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 573000000 573 false false 2 false true 410000000 410 [1] false false No definition available. No authoritative reference available. false 45 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 95000000 95 false false 2 false true 180000000 180 [1] false false No definition available. No authoritative reference available. false 46 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 47 Reserve for wildfire litigation (Note 17) 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 270000000 270 false false 2 false true 0 0 [1] false false No definition available. No authoritative reference available. false 48 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 629000000 629 false false 2 false true 684000000 684 [1] false false No definition available. No authoritative reference available. false 49 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 3888000000 3888 false false 2 false true 3612000000 3612 [1] false false No definition available. No authoritative reference available. true 50 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 7460000000 7460 false false 2 false true 6544000000 6544 [1] false false No definition available. No authoritative reference available. false 51 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 52 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 2000000 2 false false 2 false true 102000000 102 [1] false false No definition available. No authoritative reference available. false 53 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 146000000 146 false false 2 false true 155000000 155 [1] false false No definition available. No authoritative reference available. false 54 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 1252000000 1252 false false 2 false true 1487000000 1487 [1] false false No definition available. No authoritative reference available. false 55 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 1318000000 1318 false false 2 false true 946000000 946 [1] false false No definition available. No authoritative reference available. false 56 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 57 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 2557000000 2557 false false 2 false true 2430000000 2430 [1] false false No definition available. No authoritative reference available. false 58 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 1277000000 1277 false false 2 false true 1159000000 1159 [1] false false No definition available. No authoritative reference available. false 60 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 181000000 181 false false 2 false true 219000000 219 [1] false false No definition available. No authoritative reference available. false 61 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 312000000 312 false false 2 false true 392000000 392 [1] false false No definition available. No authoritative reference available. false 62 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 735000000 735 false false 2 false true 909000000 909 [1] false false No definition available. No authoritative reference available. false 63 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 7834000000 7834 false false 2 false true 7856000000 7856 [1] false false No definition available. No authoritative reference available. true 64 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 65 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 66 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 67 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 2418000000 2418 false false 2 false true 2265000000 2265 [1] false false No definition available. No authoritative reference available. false 68 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 6971000000 6971 false false 2 false true 6235000000 6235 [1] false false No definition available. No authoritative reference available. false 69 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 -13000000 -13 false false 2 false true -18000000 -18 [1] false false No definition available. No authoritative reference available. false 70 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 -369000000 -369 false false 2 false true -513000000 -513 [1] false false No definition available. No authoritative reference available. false 71 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 9007000000 9007 false false 2 false true 7969000000 7969 [1] false false No definition available. No authoritative reference available. true 72 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 73 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 144000000 144 false false 2 false true 240000000 240 [1] false false No definition available. No authoritative reference available. false 74 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 9251000000 9251 false false 2 false true 8309000000 8309 [1] false false No definition available. No authoritative reference available. true 75 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 28512000000 28512 false false 2 false true 26400000000 26400 [1] false false No definition available. No authoritative reference available. true 76 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 No definition available. No authoritative reference available. false 140 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 149 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 2418000000 2418 false false 2 false true 2265000000 2265 [1] false false No definition available. No authoritative reference available. true 151 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 No definition available. No authoritative reference available. false 215 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 224 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 6971000000 6971 false false 2 false true 6235000000 6235 [1] false false No definition available. No authoritative reference available. true 226 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 No definition available. No authoritative reference available. false 290 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 299 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 -13000000 -13 false false 2 false true -18000000 -18 [1] false false No definition available. No authoritative reference available. true 301 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 No definition available. No authoritative reference available. false 365 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 374 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 -369000000 -369 false false 2 false true -513000000 -513 [1] false false No definition available. No authoritative reference available. true 376 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 No definition available. No authoritative reference available. false 440 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 449 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 9007000000 9007 false false 2 false true 7969000000 7969 [1] false false No definition available. No authoritative reference available. true 451 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 No definition available. No authoritative reference available. false 515 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 524 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 244000000 244 false false 2 false true 340000000 340 [1] false false No definition available. No authoritative reference available. true 526 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 527 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 528 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 13000000 13 false false 2 false true 19000000 19 [1] false false No definition available. No authoritative reference available. false 529 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 530 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 8000000 8 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 531 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 229000000 229 false false 2 false true 225000000 225 false false No definition available. No authoritative reference available. false 532 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 85000000 85 false false 2 false true 30000000 30 false false No definition available. No authoritative reference available. false 533 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 8000000 8 false false 2 false true 29000000 29 false false No definition available. No authoritative reference available. false 534 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 59000000 59 false false 2 false true 22000000 22 false false No definition available. No authoritative reference available. false 535 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 41000000 41 false false 2 false true 17000000 17 false false No definition available. No authoritative reference available. false 536 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 61000000 61 false false 2 false true 62000000 62 false false No definition available. No authoritative reference available. false 537 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 30000000 30 false false 2 false true 94000000 94 false false No definition available. No authoritative reference available. false 538 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 4000000 4 false false 2 false true 8000000 8 false false No definition available. No authoritative reference available. false 539 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 40000000 40 false false 2 false true 39000000 39 false false No definition available. No authoritative reference available. false 540 Insurance receivable related to wildfire litigation (Note 17) 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 273000000 273 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 541 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 35000000 35 false false 2 false true 15000000 15 false false No definition available. No authoritative reference available. false 542 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 886000000 886 false false 2 false true 584000000 584 false false No definition available. No authoritative reference available. true 543 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 544 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 2000000 2 false false 2 false true 4000000 4 false false No definition available. No authoritative reference available. false 545 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 415000000 415 false false 2 false true 369000000 369 false false No definition available. No authoritative reference available. false 546 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 241000000 241 false false 2 false true 264000000 264 false false No definition available. No authoritative reference available. false 547 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 342000000 342 false false 2 false true 393000000 393 false false No definition available. No authoritative reference available. false 548 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 53000000 53 false false 2 false true 59000000 59 false false No definition available. No authoritative reference available. false 549 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 678000000 678 false false 2 false true 577000000 577 false false No definition available. No authoritative reference available. false 553 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 43000000 43 false false 2 false true 154000000 154 false false No definition available. No authoritative reference available. false 554 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 1774000000 1774 false false 2 false true 1820000000 1820 false false No definition available. No authoritative reference available. true 555 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 556 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 10156000000 10156 false false 2 false true 9095000000 9095 false false No definition available. No authoritative reference available. false 557 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 -2587000000 -2587 false false 2 false true -2420000000 -2420 false false No definition available. No authoritative reference available. false 558 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 7569000000 7569 false false 2 false true 6675000000 6675 false false No definition available. No authoritative reference available. true 559 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 10229000000 10229 false false 2 false true 9079000000 9079 false false No definition available. No authoritative reference available. true 560 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 561 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 33000000 33 false false 2 false true 0 0 [1] false false No definition available. No authoritative reference available. false 562 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 249000000 249 false false 2 false true 261000000 261 [1] false false No definition available. No authoritative reference available. false 564 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 0 0 false false 2 false true 1000000 1 [1] false false No definition available. No authoritative reference available. false 567 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 104000000 104 false false 2 false true 105000000 105 [1] false false No definition available. No authoritative reference available. false 568 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 159000000 159 false false 2 false true 114000000 114 [1] false false No definition available. No authoritative reference available. false 569 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 45000000 45 false false 2 false true 2000000 2 [1] false false No definition available. No authoritative reference available. false 570 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 51000000 51 false false 2 false true 77000000 77 [1] false false No definition available. No authoritative reference available. false 571 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 56000000 56 false false 2 false true 53000000 53 [1] false false No definition available. No authoritative reference available. false 572 Reserve for wildfire litigation (Note 17) 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 270000000 270 false false 2 false true 0 0 [1] false false No definition available. No authoritative reference available. false 573 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 157000000 157 false false 2 false true 163000000 163 [1] false false No definition available. No authoritative reference available. false 574 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 1124000000 1124 false false 2 false true 776000000 776 [1] false false No definition available. No authoritative reference available. true 575 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 2623000000 2623 false false 2 false true 2142000000 2142 [1] false false No definition available. No authoritative reference available. false 576 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 578 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 23000000 23 false false 2 false true 26000000 26 [1] false false No definition available. No authoritative reference available. false 579 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 370000000 370 false false 2 false true 419000000 419 [1] false false No definition available. No authoritative reference available. false 580 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 774000000 774 false false 2 false true 628000000 628 [1] false false No definition available. No authoritative reference available. false 581 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 26000000 26 false false 2 false true 26000000 26 [1] false false No definition available. No authoritative reference available. false 582 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 1330000000 1330 false false 2 false true 1212000000 1212 [1] false false No definition available. No authoritative reference available. false 583 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 585000000 585 false false 2 false true 550000000 550 [1] false false No definition available. No authoritative reference available. false 586 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 265000000 265 false false 2 false true 347000000 347 [1] false false No definition available. No authoritative reference available. false 587 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 145000000 145 false false 2 false true 204000000 204 [1] false false No definition available. No authoritative reference available. false 588 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 3518000000 3518 false false 2 false true 3412000000 3412 [1] false false No definition available. No authoritative reference available. true 589 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 590 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 592 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 593 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 1611000000 1611 false false 2 false true 1417000000 1417 [1] false false No definition available. No authoritative reference available. false 595 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 596 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 2739000000 2739 false false 2 false true 2542000000 2542 [1] false false No definition available. No authoritative reference available. true 598 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 146000000 146 false false 2 false true 128000000 128 [1] false false No definition available. No authoritative reference available. false 599 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 2885000000 2885 false false 2 false true 2670000000 2670 [1] false false No definition available. No authoritative reference available. true 600 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 10229000000 10229 false false 2 false true 9079000000 9079 [1] false false No definition available. No authoritative reference available. true 601 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 No definition available. No authoritative reference available. false 665 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 674 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 1138000000 1138 false false 2 false true 1138000000 1138 [1] false false No definition available. No authoritative reference available. true 676 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 No definition available. No authoritative reference available. false 740 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 749 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 1611000000 1611 false false 2 false true 1417000000 1417 [1] false false No definition available. No authoritative reference available. true 751 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 No definition available. No authoritative reference available. false 815 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 824 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 -10000000 -10 false false 2 false true -13000000 -13 [1] false false No definition available. No authoritative reference available. true 826 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 No definition available. No authoritative reference available. false 890 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 899 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 2739000000 2739 false false 2 false true 2542000000 2542 [1] false false No definition available. No authoritative reference available. true 901 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 No definition available. No authoritative reference available. false 965 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 974 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 146000000 146 false false 2 false true 128000000 128 [1] false false No definition available. No authoritative reference available. true 976 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 977 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 978 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 49000000 49 false false 2 false true 206000000 206 [1] false false No definition available. No authoritative reference available. false 981 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 567000000 567 false false 2 false true 572000000 572 false false No definition available. No authoritative reference available. false 982 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 44000000 44 false false 2 false true 20000000 20 false false No definition available. No authoritative reference available. false 983 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 12000000 12 false false 2 false true 5000000 5 false false No definition available. No authoritative reference available. false 984 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 36000000 36 false false 2 false true 108000000 108 false false No definition available. No authoritative reference available. false 986 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 93000000 93 false false 2 false true 167000000 167 false false No definition available. No authoritative reference available. false 988 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 9000000 9 false false 2 false true 18000000 18 false false No definition available. No authoritative reference available. false 991 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 992 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 849000000 849 false false 2 false true 1133000000 1133 false false No definition available. No authoritative reference available. true 993 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 994 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 513000000 513 false false 2 false true 457000000 457 false false No definition available. No authoritative reference available. false 997 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 617000000 617 false false 2 false true 795000000 795 false false No definition available. No authoritative reference available. false 998 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 131000000 131 false false 2 false true 105000000 105 false false No definition available. No authoritative reference available. false 1003 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 40000000 40 false false 2 false true 49000000 49 false false No definition available. No authoritative reference available. false 1004 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 1301000000 1301 false false 2 false true 1406000000 1406 false false No definition available. No authoritative reference available. true 1005 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 1006 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 9299000000 9299 false false 2 false true 8816000000 8816 false false No definition available. No authoritative reference available. false 1007 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 -3615000000 -3615 false false 2 false true -3448000000 -3448 false false No definition available. No authoritative reference available. false 1008 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 5684000000 5684 false false 2 false true 5368000000 5368 false false No definition available. No authoritative reference available. true 1009 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 7834000000 7834 false false 2 false true 7907000000 7907 false false No definition available. No authoritative reference available. true 1010 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 1012 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 207000000 207 false false 2 false true 257000000 257 [1] false false No definition available. No authoritative reference available. false 1013 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 120000000 120 false false 2 false true 163000000 163 [1] false false No definition available. No authoritative reference available. false 1014 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 87000000 87 false false 2 false true 106000000 106 [1] false false No definition available. No authoritative reference available. false 1015 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 5000000 5 false false 2 false true 6000000 6 [1] false false No definition available. No authoritative reference available. false 1017 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 86000000 86 false false 2 false true 92000000 92 [1] false false No definition available. No authoritative reference available. false 1018 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 223000000 223 false false 2 false true 221000000 221 [1] false false No definition available. No authoritative reference available. false 1019 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 11000000 11 false false 2 false true 100000000 100 [1] false false No definition available. No authoritative reference available. false 1021 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 87000000 87 false false 2 false true 114000000 114 [1] false false No definition available. No authoritative reference available. false 1023 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 162000000 162 false false 2 false true 213000000 213 [1] false false No definition available. No authoritative reference available. false 1024 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 988000000 988 false false 2 false true 1272000000 1272 [1] false false No definition available. No authoritative reference available. true 1025 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 1283000000 1283 false false 2 false true 1270000000 1270 [1] false false No definition available. No authoritative reference available. false 1026 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 1028 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 1029 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 644000000 644 false false 2 false true 823000000 823 [1] false false No definition available. No authoritative reference available. false 1030 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 273000000 273 false false 2 false true 157000000 157 [1] false false No definition available. No authoritative reference available. false 1031 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 1032 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 1227000000 1227 false false 2 false true 1218000000 1218 [1] false false No definition available. No authoritative reference available. false 1033 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 662000000 662 false false 2 false true 581000000 581 [1] false false No definition available. No authoritative reference available. false 1034 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 175000000 175 false false 2 false true 214000000 214 [1] false false No definition available. No authoritative reference available. false 1037 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 203000000 203 false false 2 false true 251000000 251 [1] false false No definition available. No authoritative reference available. false 1038 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 3335000000 3335 false false 2 false true 3405000000 3405 [1] false false No definition available. No authoritative reference available. true 1040 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 1041 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 1042 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 1043 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 691000000 691 false false 2 false true 426000000 426 [1] false false No definition available. No authoritative reference available. false 1045 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 -25000000 -25 false false 2 false true -28000000 -28 [1] false false No definition available. No authoritative reference available. false 1046 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 2208000000 2208 false false 2 false true 1940000000 1940 [1] false false No definition available. No authoritative reference available. true 1047 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 1049 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 2228000000 2228 false false 2 false true 1960000000 1960 [1] false false No definition available. No authoritative reference available. true 1050 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 7834000000 7834 false false 2 false true 7907000000 7907 [1] false false No definition available. No authoritative reference available. true 1051 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 No definition available. No authoritative reference available. false 1115 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 1124 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 80000000 80 false false 2 false true 80000000 80 [1] false false No definition available. No authoritative reference available. true 1126 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 No definition available. No authoritative reference available. false 1190 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 1199 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 1462000000 1462 false false 2 false true 1462000000 1462 [1] false false No definition available. No authoritative reference available. true 1201 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 No definition available. No authoritative reference available. false 1265 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 1274 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 691000000 691 false false 2 false true 426000000 426 [1] false false No definition available. No authoritative reference available. true 1276 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 No definition available. No authoritative reference available. false 1340 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 1349 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 -25000000 -25 false false 2 false true -28000000 -28 [1] false false No definition available. No authoritative reference available. true 1351 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 No definition available. No authoritative reference available. false 1415 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 1424 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 2208000000 2208 false false 2 false true 1940000000 1940 [1] false false No definition available. No authoritative reference available. true 1426 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 No definition available. No authoritative reference available. false 1490 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 1499 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 20000000 20 false false 2 false true 20000000 20 [1] false false No definition available. No authoritative reference available. true 1501 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 1502 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 1503 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 49000000 49 false false 2 false true 206000000 206 false false No definition available. No authoritative reference available. false 1506 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 567000000 567 false false 2 false true 572000000 572 false false No definition available. No authoritative reference available. false 1507 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 44000000 44 false false 2 false true 20000000 20 false false No definition available. No authoritative reference available. false 1508 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 6000000 6 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 1509 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 35000000 35 false false 2 false true 41000000 41 false false No definition available. No authoritative reference available. false 1511 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 93000000 93 false false 2 false true 167000000 167 false false No definition available. No authoritative reference available. false 1513 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 9000000 9 false false 2 false true 18000000 18 false false No definition available. No authoritative reference available. false 1516 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 40000000 40 false false 2 false true 37000000 37 false false No definition available. No authoritative reference available. false 1517 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 843000000 843 false false 2 false true 1061000000 1061 false false No definition available. No authoritative reference available. true 1518 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 1522 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 617000000 617 false false 2 false true 795000000 795 false false No definition available. No authoritative reference available. false 1523 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 131000000 131 false false 2 false true 105000000 105 false false No definition available. No authoritative reference available. false 1528 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 14000000 14 false false 2 false true 24000000 24 false false No definition available. No authoritative reference available. false 1529 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 762000000 762 false false 2 false true 924000000 924 false false No definition available. No authoritative reference available. true 1530 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 1531 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 9297000000 9297 false false 2 false true 8814000000 8814 false false No definition available. No authoritative reference available. false 1532 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 -3615000000 -3615 false false 2 false true -3448000000 -3448 false false No definition available. No authoritative reference available. false 1533 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 5682000000 5682 false false 2 false true 5366000000 5366 false false No definition available. No authoritative reference available. true 1534 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 7287000000 7287 false false 2 false true 7351000000 7351 false false No definition available. No authoritative reference available. true 1535 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 1537 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 207000000 207 false false 2 false true 257000000 257 false false No definition available. No authoritative reference available. false 1538 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 120000000 120 false false 2 false true 163000000 163 false false No definition available. No authoritative reference available. false 1539 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 3000000 3 false false 2 false true 23000000 23 false false No definition available. No authoritative reference available. false 1540 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 6000000 6 false false 2 false true 6000000 6 false false No definition available. No authoritative reference available. false 1542 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 86000000 86 false false 2 false true 92000000 92 false false No definition available. No authoritative reference available. false 1543 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 223000000 223 false false 2 false true 221000000 221 false false No definition available. No authoritative reference available. false 1544 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 11000000 11 false false 2 false true 100000000 100 false false No definition available. No authoritative reference available. false 1546 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 87000000 87 false false 2 false true 114000000 114 false false No definition available. No authoritative reference available. false 1548 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 158000000 158 false false 2 false true 211000000 211 false false No definition available. No authoritative reference available. false 1549 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 901000000 901 false false 2 false true 1187000000 1187 false false No definition available. No authoritative reference available. true 1550 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 1283000000 1283 false false 2 false true 1270000000 1270 false false No definition available. No authoritative reference available. false 1551 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 1553 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 1554 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 644000000 644 false false 2 false true 823000000 823 false false No definition available. No authoritative reference available. false 1555 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 280000000 280 false false 2 false true 167000000 167 false false No definition available. No authoritative reference available. false 1556 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 1557 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 1227000000 1227 false false 2 false true 1218000000 1218 false false No definition available. No authoritative reference available. false 1558 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 662000000 662 false false 2 false true 581000000 581 false false No definition available. No authoritative reference available. false 1559 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 175000000 175 false false 2 false true 214000000 214 false false No definition available. No authoritative reference available. false 1562 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 198000000 198 false false 2 false true 240000000 240 false false No definition available. No authoritative reference available. false 1563 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 3337000000 3337 false false 2 false true 3404000000 3404 false false No definition available. No authoritative reference available. true 1565 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 1566 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 1567 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 1568 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 903000000 903 false false 2 false true 630000000 630 false false No definition available. No authoritative reference available. false 1570 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 -25000000 -25 false false 2 false true -28000000 -28 false false No definition available. No authoritative reference available. false 1571 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 1766000000 1766 false false 2 false true 1490000000 1490 false false No definition available. No authoritative reference available. true 1574 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 1766000000 1766 false false 2 false true 1490000000 1490 false false No definition available. No authoritative reference available. true 1575 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 7287000000 7287 false false 2 false true 7351000000 7351 false false No definition available. No authoritative reference available. true 1576 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 No definition available. No authoritative reference available. false 1640 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 1649 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 22000000 22 false false 2 false true 22000000 22 false false No definition available. No authoritative reference available. true 1651 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 No definition available. No authoritative reference available. false 1715 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 1724 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 866000000 866 false false 2 false true 866000000 866 false false No definition available. No authoritative reference available. true 1726 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 No definition available. No authoritative reference available. false 1790 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 1799 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 903000000 903 false false 2 false true 630000000 630 false false No definition available. No authoritative reference available. true 1801 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 No definition available. No authoritative reference available. false 1865 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 1874 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 true true -25000000 -25 false false 2 true true -28000000 -28 false false No definition available. No authoritative reference available. true 1 As adjusted for the retrospective adoption of ASC 810 (SFAS 160). false 2 300 false Millions UnKnown UnKnown false true