1.0.0.3 true CONDENSED STATEMENTS OF CONSOLIDATED CASH FLOWS (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 CASH FLOWS FROM OPERATING ACTIVITIES 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 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true 816000000 816 false false 2 true true 808000000 808 [1] false false No definition available. No authoritative reference available. false 4 Adjustments to reconcile net income to net cash provided by operating activities: 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 5 Depreciation and amortization 2 us-gaap_DepreciationAndAmortization us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 568000000 568 false false 2 false true 508000000 508 [1] false false No definition available. No authoritative reference available. false 7 Deferred income taxes and investment tax credits 2 us-gaap_DeferredIncomeTaxesAndTaxCredits us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 181000000 181 false false 2 false true 165000000 165 [1] false false No definition available. No authoritative reference available. false 8 Equity earnings 2 us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -470000000 -470 false false 2 false true -228000000 -228 [1] false false No definition available. No authoritative reference available. false 9 Gains on sale of assets 2 us-gaap_GainLossOnDispositionOfAssets us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -3000000 -3 false false 2 false true -114000000 -114 [1] false false No definition available. No authoritative reference available. false 10 Write-off of long-lived assets 2 us-gaap_LossContingencyLossInPeriod us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 132000000 132 false false 2 false true 0 0 [1] false false No definition available. No authoritative reference available. false 11 Fixed-price contracts and other derivatives 2 us-gaap_DerivativeGainLossOnDerivativeNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -27000000 -27 false false 2 false true 0 0 [1] false false No definition available. No authoritative reference available. false 12 Other adjustments to reconcile net income to net cash provided by operating activities 2 us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 45000000 45 false false 2 false true 76000000 76 [1] false false No definition available. No authoritative reference available. false 13 Net changes in other working capital components 2 us-gaap_IncreaseDecreaseInOperatingCapital us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 220000000 220 false false 2 false true -408000000 -408 [1] false false No definition available. No authoritative reference available. false 14 Distributions from RBS Sempra Commodities LLP 2 sre_DistributionsFromJointVenture sre false debit duration monetary No definition available. false false false false false false false false false 1 false true 407000000 407 false false 2 false true 56000000 56 [1] false false No definition available. No authoritative reference available. false 15 Changes in other assets 2 sre_IncreaseDecreaseInNoncurrentAssets sre false credit duration monetary No definition available. false false false false false false false false false 1 false true 81000000 81 false false 2 false true -3000000 -3 [1] false false No definition available. No authoritative reference available. false 16 Changes in other liabilities 2 sre_IncreaseDecreaseInNoncurrentLiabilities sre false debit duration monetary No definition available. false false false false false false false false false 1 false true -66000000 -66 false false 2 false true -55000000 -55 [1] false false No definition available. No authoritative reference available. false 17 Net cash provided by operating activities 2 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 1884000000 1884 false false 2 false true 805000000 805 [1] false false No definition available. No authoritative reference available. true 18 CASH FLOWS FROM INVESTING ACTIVITIES 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 19 Expenditures for property, plant and equipment 2 us-gaap_PaymentsToAcquireProductiveAssets us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -1371000000 -1371 false false 2 false true -1541000000 -1541 [1] false false No definition available. No authoritative reference available. false 20 Proceeds from sale of assets, net of cash sold 2 sre_ProceedsFromSaleOfAssetsAndBusinessesNetOfCashSold sre false debit duration monetary No definition available. false false false false false false false false false 1 false true 179000000 179 false false 2 false true 2071000000 2071 [1] false false No definition available. No authoritative reference available. false 21 Expenditures for investments and acquisition of businesses, net of cash acquired 2 sre_ExpedituresForInvestmentsAndAcquisitionOfBusinessesNetOfCashAcquired sre false debit duration monetary No definition available. false false false false false false false false false 1 false true -762000000 -762 false false 2 false true -2180000000 -2180 [1] false false No definition available. No authoritative reference available. false 24 Distributions from investments 2 sre_DistributionsFromInvestments sre false debit duration monetary No definition available. false false false false false false false false false 1 false true 16000000 16 false false 2 false true 23000000 23 [1] false false No definition available. No authoritative reference available. false 25 Purchases of nuclear decommissioning and other trust assets 2 sre_PurchasesOfNuclearDecommissioningAndOtherTrustAssets sre false credit duration monetary No definition available. false false false false false false false false false 1 false true -167000000 -167 false false 2 false true -361000000 -361 [1] false false No definition available. No authoritative reference available. false 26 Proceeds from sales by nuclear decommissioning and other trusts 2 sre_ProceedsFromSalesByNuclearDecommissioningAndOtherTrusts sre false debit duration monetary No definition available. false false false false false false false false false 1 false true 155000000 155 false false 2 false true 350000000 350 [1] false false No definition available. No authoritative reference available. false 27 Decrease (increase) in loans to unconsolidated affiliates, net 2 us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 60000000 60 [1] false false No definition available. No authoritative reference available. false 28 Other cash flows from investing activities 2 us-gaap_PaymentsForProceedsFromOtherInvestingActivities us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -20000000 -20 false false 2 false true -18000000 -18 [1] false false No definition available. No authoritative reference available. false 29 Net cash used in investing activities 2 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -1970000000 -1970 false false 2 false true -1596000000 -1596 [1] false false No definition available. No authoritative reference available. true 30 CASH FLOWS FROM FINANCING ACTIVITIES 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 Common dividends paid 2 us-gaap_PaymentsOfDividendsCommonStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -255000000 -255 false false 2 false true -252000000 -252 [1] false false No definition available. No authoritative reference available. false 33 Preferred dividends paid by subsidiaries 2 sre_PreferredDividendsPaidBySubsidiaries sre false credit duration monetary No definition available. false false false false false false false false false 1 false true -7000000 -7 false false 2 false true -7000000 -7 [1] false false No definition available. No authoritative reference available. false 34 Issuances of common stock 2 us-gaap_ProceedsFromIssuanceOfCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 52000000 52 false false 2 false true 17000000 17 [1] false false No definition available. No authoritative reference available. false 35 Repurchases of common stock 2 us-gaap_PaymentsForRepurchaseOfCommonStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true -1002000000 -1002 [1] false false No definition available. No authoritative reference available. false 37 Issuances of long-term debt 2 us-gaap_ProceedsFromIssuanceOfLongTermDebt us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 1181000000 1181 false false 2 false true 650000000 650 [1] false false No definition available. No authoritative reference available. false 38 Payments on long-term debt 2 us-gaap_RepaymentsOfLongTermDebt us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -325000000 -325 false false 2 false true -75000000 -75 [1] false false No definition available. No authoritative reference available. false 39 Increase (decrease) in short-term debt, net 2 us-gaap_ProceedsFromRepaymentsOfShortTermDebt us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -52000000 -52 false false 2 false true 985000000 985 [1] false false No definition available. No authoritative reference available. false 41 Purchase of noncontrolling interest 2 us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -94000000 -94 false false 2 false true 0 0 [1] false false No definition available. No authoritative reference available. false 42 Other cash flows from financing activities 2 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 11000000 11 false false 2 false true 5000000 5 [1] false false No definition available. No authoritative reference available. false 43 Net cash provided by (used in) financing activities 2 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 511000000 511 false false 2 false true 321000000 321 [1] false false No definition available. No authoritative reference available. true 44 Increase (decrease) in cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 425000000 425 false false 2 false true -470000000 -470 [1] false false No definition available. No authoritative reference available. true 45 Cash and cash equivalents, beginning of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false true false false 1 false true 331000000 331 false false 2 false true 668000000 668 false false No definition available. No authoritative reference available. false 46 Cash and cash equivalents, end of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false false true false 1 false true 756000000 756 false false 2 false true 198000000 198 [1] false false No definition available. No authoritative reference available. false 47 SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION 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 48 Interest payments, net of amounts capitalized 2 us-gaap_InterestPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 201000000 201 false false 2 false true 142000000 142 false false No definition available. No authoritative reference available. false 49 Income tax payments, net of refunds 2 us-gaap_IncomeTaxesPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 98000000 98 false false 2 false true 120000000 120 false false No definition available. No authoritative reference available. false 50 SUPPLEMENTAL DISCLOSURE OF NON CASH ACTIVITIES 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 51 Increase (decrease) in accounts payable from investments in property, plant and equipment 2 us-gaap_CapitalExpendituresIncurredButNotYetPaid us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -114000000 -114 false false 2 false true -41000000 -41 false false No definition available. No authoritative reference available. false 52 Dividends declared but not paid 2 us-gaap_DividendsPayableAmount us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 99000000 99 false false 2 false true 89000000 89 false false No definition available. No authoritative reference available. false 53 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 54 CASH FLOWS FROM OPERATING ACTIVITIES 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 55 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 290000000 290 false false 2 false true 270000000 270 [1] false false No definition available. No authoritative reference available. false 56 Adjustments to reconcile net income to net cash provided by operating activities: 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 58 Utility depreciation and amortization 2 us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 239000000 239 false false 2 false true 223000000 223 [1] false false No definition available. No authoritative reference available. false 59 Deferred income taxes and investment tax credits 2 us-gaap_DeferredIncomeTaxesAndTaxCredits us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 35000000 35 false false 2 false true 77000000 77 [1] false false No definition available. No authoritative reference available. false 63 Fixed-price contracts and other derivatives 2 us-gaap_DerivativeGainLossOnDerivativeNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -28000000 -28 false false 2 false true -7000000 -7 [1] false false No definition available. No authoritative reference available. false 64 Other adjustments to reconcile net income to net cash provided by operating activities 2 us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -14000000 -14 false false 2 false true -4000000 -4 [1] false false No definition available. No authoritative reference available. false 65 Net changes in other working capital components 2 us-gaap_IncreaseDecreaseInOperatingCapital us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 115000000 115 false false 2 false true -41000000 -41 [1] false false No definition available. No authoritative reference available. false 67 Changes in other assets 2 sre_IncreaseDecreaseInNoncurrentAssets sre false credit duration monetary No definition available. false false false false false false false false false 1 false true 20000000 20 false false 2 false true -7000000 -7 [1] false false No definition available. No authoritative reference available. false 68 Changes in other liabilities 2 sre_IncreaseDecreaseInNoncurrentLiabilities sre false debit duration monetary No definition available. false false false false false false false false false 1 false true -38000000 -38 false false 2 false true 3000000 3 [1] false false No definition available. No authoritative reference available. false 69 Net cash provided by operating activities 2 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 619000000 619 false false 2 false true 514000000 514 [1] false false No definition available. No authoritative reference available. true 70 CASH FLOWS FROM INVESTING ACTIVITIES 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 71 Expenditures for property, plant and equipment 2 us-gaap_PaymentsToAcquireProductiveAssets us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -633000000 -633 false false 2 false true -638000000 -638 [1] false false No definition available. No authoritative reference available. false 74 Expenditures for short-term investments 2 us-gaap_PaymentsToAcquireShortTermInvestments us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -152000000 -152 false false 2 false true -304000000 -304 [1] false false No definition available. No authoritative reference available. false 75 Proceeds from sale of short-term investments 2 us-gaap_ProceedsFromSaleOfShortTermInvestments us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 176000000 176 false false 2 false true 236000000 236 [1] false false No definition available. No authoritative reference available. false 77 Purchases of nuclear decommissioning and other trust assets 2 sre_PurchasesOfNuclearDecommissioningAndOtherTrustAssets sre false credit duration monetary No definition available. false false false false false false false false false 1 false true -161000000 -161 false false 2 false true -347000000 -347 [1] false false No definition available. No authoritative reference available. false 78 Proceeds from sales by nuclear decommissioning and other trusts 2 sre_ProceedsFromSalesByNuclearDecommissioningAndOtherTrusts sre false debit duration monetary No definition available. false false false false false false false false false 1 false true 155000000 155 false false 2 false true 348000000 348 [1] false false No definition available. No authoritative reference available. false 79 Decrease (increase) in loans to unconsolidated affiliates, net 2 us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 33000000 33 false false 2 false true -6000000 -6 [1] false false No definition available. No authoritative reference available. false 80 Other cash flows from investing activities 2 us-gaap_PaymentsForProceedsFromOtherInvestingActivities us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 2000000 2 false false 2 false true 1000000 1 [1] false false No definition available. No authoritative reference available. false 81 Net cash used in investing activities 2 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -580000000 -580 false false 2 false true -710000000 -710 [1] false false No definition available. No authoritative reference available. true 82 CASH FLOWS FROM FINANCING ACTIVITIES 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 83 Common dividends paid 2 us-gaap_PaymentsOfDividendsCommonStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -150000000 -150 false false 2 false true 0 0 [1] false false No definition available. No authoritative reference available. false 84 Preferred dividends paid 2 us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -4000000 -4 false false 2 false true -4000000 -4 [1] false false No definition available. No authoritative reference available. false 88 Redemptions of preferred stock 2 us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true -14000000 -14 [1] false false No definition available. No authoritative reference available. false 89 Issuances of long-term debt 2 us-gaap_ProceedsFromIssuanceOfLongTermDebt us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 386000000 386 false false 2 false true 138000000 138 [1] false false No definition available. No authoritative reference available. false 92 Capital contribution received by Otay Mesa VIE 2 us-gaap_ProceedsFromMinorityShareholders us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 4000000 4 false false 2 false true 9000000 9 [1] false false No definition available. No authoritative reference available. false 94 Other cash flows from financing activities 2 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -3000000 -3 false false 2 false true -1000000 -1 [1] false false No definition available. No authoritative reference available. false 95 Net cash provided by (used in) financing activities 2 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 233000000 233 false false 2 false true 128000000 128 [1] false false No definition available. No authoritative reference available. true 96 Increase (decrease) in cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 272000000 272 false false 2 false true -68000000 -68 [1] false false No definition available. No authoritative reference available. true 97 Cash and cash equivalents, beginning of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false true false false 1 false true 19000000 19 false false 2 false true 158000000 158 false false No definition available. No authoritative reference available. false 98 Cash and cash equivalents, end of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false false true false 1 false true 291000000 291 false false 2 false true 90000000 90 [1] false false No definition available. No authoritative reference available. false 99 SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION 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 100 Interest payments, net of amounts capitalized 2 us-gaap_InterestPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 51000000 51 false false 2 false true 59000000 59 false false No definition available. No authoritative reference available. false 101 Income tax payments, net of refunds 2 us-gaap_IncomeTaxesPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 144000000 144 false false 2 false true -54000000 -54 false false No definition available. No authoritative reference available. false 102 SUPPLEMENTAL DISCLOSURE OF NON CASH ACTIVITIES 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 103 Increase (decrease) in accounts payable from investments in property, plant and equipment 2 us-gaap_CapitalExpendituresIncurredButNotYetPaid us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -58000000 -58 false false 2 false true -11000000 -11 false false No definition available. No authoritative reference available. false 104 Dividends declared but not paid 2 us-gaap_DividendsPayableAmount us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 1000000 1 false false 2 false true 1000000 1 false false No definition available. No authoritative reference available. false 105 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 106 CASH FLOWS FROM OPERATING ACTIVITIES 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 107 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 195000000 195 false false 2 false true 196000000 196 [1] false false No definition available. No authoritative reference available. false 108 Adjustments to reconcile net income to net cash provided by operating activities: 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 110 Utility depreciation and amortization 2 us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 220000000 220 false false 2 false true 209000000 209 [1] false false No definition available. No authoritative reference available. false 111 Deferred income taxes and investment tax credits 2 us-gaap_DeferredIncomeTaxesAndTaxCredits us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 24000000 24 false false 2 false true 74000000 74 [1] false false No definition available. No authoritative reference available. false 116 Other adjustments to reconcile net income to net cash provided by operating activities 2 us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 2000000 2 false false 2 false true -2000000 -2 [1] false false No definition available. No authoritative reference available. false 117 Net changes in other working capital components 2 us-gaap_IncreaseDecreaseInOperatingCapital us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 129000000 129 false false 2 false true -134000000 -134 [1] false false No definition available. No authoritative reference available. false 119 Changes in other assets 2 sre_IncreaseDecreaseInNoncurrentAssets sre false credit duration monetary No definition available. false false false false false false false false false 1 false true 8000000 8 false false 2 false true 25000000 25 [1] false false No definition available. No authoritative reference available. false 120 Changes in other liabilities 2 sre_IncreaseDecreaseInNoncurrentLiabilities sre false debit duration monetary No definition available. false false false false false false false false false 1 false true -33000000 -33 false false 2 false true -63000000 -63 [1] false false No definition available. No authoritative reference available. false 121 Net cash provided by operating activities 2 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 545000000 545 false false 2 false true 305000000 305 [1] false false No definition available. No authoritative reference available. true 122 CASH FLOWS FROM INVESTING ACTIVITIES 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 123 Expenditures for property, plant and equipment 2 us-gaap_PaymentsToAcquireProductiveAssets us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -336000000 -336 false false 2 false true -350000000 -350 [1] false false No definition available. No authoritative reference available. false 131 Decrease (increase) in loans to unconsolidated affiliates, net 2 us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 8000000 8 false false 2 false true 132000000 132 [1] false false No definition available. No authoritative reference available. false 132 Other cash flows from investing activities 2 us-gaap_PaymentsForProceedsFromOtherInvestingActivities us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -1000000 -1 false false 2 false true 0 0 [1] false false No definition available. No authoritative reference available. false 133 Net cash used in investing activities 2 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -329000000 -329 false false 2 false true -218000000 -218 [1] false false No definition available. No authoritative reference available. true 134 CASH FLOWS FROM FINANCING ACTIVITIES 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 135 Common dividends paid 2 us-gaap_PaymentsOfDividendsCommonStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true -200000000 -200 [1] false false No definition available. No authoritative reference available. false 136 Preferred dividends paid 2 us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -3000000 -3 false false 2 false true -3000000 -3 [1] false false No definition available. No authoritative reference available. false 137 Preferred dividends paid by subsidiaries 2 sre_PreferredDividendsPaidBySubsidiaries sre false credit duration monetary No definition available. false false false false false false false false false 1 false true -1000000 -1 false false 2 false true -1000000 -1 [1] false false No definition available. No authoritative reference available. false 143 Increase (decrease) in short-term debt, net 2 us-gaap_ProceedsFromRepaymentsOfShortTermDebt us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 96000000 96 [1] false false No definition available. No authoritative reference available. false 147 Net cash provided by (used in) financing activities 2 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -4000000 -4 false false 2 false true -108000000 -108 [1] false false No definition available. No authoritative reference available. true 148 Increase (decrease) in cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 212000000 212 false false 2 false true -21000000 -21 [1] false false No definition available. No authoritative reference available. true 149 Cash and cash equivalents, beginning of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false true false false 1 false true 206000000 206 false false 2 false true 59000000 59 false false No definition available. No authoritative reference available. false 150 Cash and cash equivalents, end of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false false true false 1 false true 418000000 418 false false 2 false true 38000000 38 [1] false false No definition available. No authoritative reference available. false 151 SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION 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 152 Interest payments, net of amounts capitalized 2 us-gaap_InterestPaidNet us-gaap true credit duration 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 153 Income tax payments, net of refunds 2 us-gaap_IncomeTaxesPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 54000000 54 false false 2 false true 113000000 113 false false No definition available. No authoritative reference available. false 154 SUPPLEMENTAL DISCLOSURE OF NON CASH ACTIVITIES 2 us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 155 Increase (decrease) in accounts payable from investments in property, plant and equipment 2 us-gaap_CapitalExpendituresIncurredButNotYetPaid us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -10000000 -10 false false 2 false true -30000000 -30 false false No definition available. No authoritative reference available. false 156 Dividends declared but not paid 2 us-gaap_DividendsPayableAmount us-gaap true credit instant monetary No definition available. false false false false false false false false false 1 false true 1000000 1 false false 2 false true 1000000 1 false false No definition available. No authoritative reference available. false 157 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 158 CASH FLOWS FROM OPERATING ACTIVITIES 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 159 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 199000000 199 false false 2 false true 191000000 191 false false No definition available. No authoritative reference available. false 160 Adjustments to reconcile net income to net cash provided by operating activities: 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 162 Utility depreciation and amortization 2 us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 220000000 220 false false 2 false true 209000000 209 false false No definition available. No authoritative reference available. false 163 Deferred income taxes and investment tax credits 2 us-gaap_DeferredIncomeTaxesAndTaxCredits us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 22000000 22 false false 2 false true 71000000 71 false false No definition available. No authoritative reference available. false 168 Other adjustments to reconcile net income to net cash provided by operating activities 2 us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 6000000 6 false false 2 false true 1000000 1 false false No definition available. No authoritative reference available. false 169 Net changes in other working capital components 2 us-gaap_IncreaseDecreaseInOperatingCapital us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 125000000 125 false false 2 false true -135000000 -135 false false No definition available. No authoritative reference available. false 171 Changes in other assets 2 sre_IncreaseDecreaseInNoncurrentAssets sre false credit duration monetary No definition available. false false false false false false false false false 1 false true 4000000 4 false false 2 false true 21000000 21 false false No definition available. No authoritative reference available. false 172 Changes in other liabilities 2 sre_IncreaseDecreaseInNoncurrentLiabilities sre false debit duration monetary No definition available. false false false false false false false false false 1 false true -27000000 -27 false false 2 false true -60000000 -60 false false No definition available. No authoritative reference available. false 173 Net cash provided by operating activities 2 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 549000000 549 false false 2 false true 298000000 298 false false No definition available. No authoritative reference available. true 174 CASH FLOWS FROM INVESTING ACTIVITIES 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 175 Expenditures for property, plant and equipment 2 us-gaap_PaymentsToAcquireProductiveAssets us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -336000000 -336 false false 2 false true -350000000 -350 false false No definition available. No authoritative reference available. false 183 Decrease (increase) in loans to unconsolidated affiliates, net 2 us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 136000000 136 false false No definition available. No authoritative reference available. false 185 Net cash used in investing activities 2 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -336000000 -336 false false 2 false true -214000000 -214 false false No definition available. No authoritative reference available. true 186 CASH FLOWS FROM FINANCING ACTIVITIES 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 187 Common dividends paid 2 us-gaap_PaymentsOfDividendsCommonStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true -200000000 -200 false false No definition available. No authoritative reference available. false 188 Preferred dividends paid 2 us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -1000000 -1 false false 2 false true -1000000 -1 false false No definition available. No authoritative reference available. false 195 Increase (decrease) in short-term debt, net 2 us-gaap_ProceedsFromRepaymentsOfShortTermDebt us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 96000000 96 false false No definition available. No authoritative reference available. false 199 Net cash provided by (used in) financing activities 2 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -1000000 -1 false false 2 false true -105000000 -105 false false No definition available. No authoritative reference available. true 200 Increase (decrease) in cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 212000000 212 false false 2 false true -21000000 -21 false false No definition available. No authoritative reference available. true 201 Cash and cash equivalents, beginning of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false true false false 1 false true 206000000 206 false false 2 false true 59000000 59 false false No definition available. No authoritative reference available. false 202 Cash and cash equivalents, end of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false false true false 1 false true 418000000 418 false false 2 false true 38000000 38 false false No definition available. No authoritative reference available. false 203 SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION 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 204 Interest payments, net of amounts capitalized 2 us-gaap_InterestPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 40000000 40 false false 2 false true 35000000 35 false false No definition available. No authoritative reference available. false 205 Income tax payments, net of refunds 2 us-gaap_IncomeTaxesPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 54000000 54 false false 2 false true 113000000 113 false false No definition available. No authoritative reference available. false 206 SUPPLEMENTAL DISCLOSURE OF NON CASH ACTIVITIES 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 207 Increase (decrease) in accounts payable from investments in property, plant and equipment 2 us-gaap_CapitalExpendituresIncurredButNotYetPaid us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true -10000000 -10 false false 2 true true -30000000 -30 false false No definition available. No authoritative reference available. false 1 As adjusted for the retrospective adoption of ASC 810 (SFAS 160). false 2 143 false Millions UnKnown UnKnown false true