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 514000000 514 false false 2 true true 506000000 506 [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 372000000 372 false false 2 false true 346000000 346 [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 90000000 90 false false 2 false true 51000000 51 [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 -327000000 -327 false false 2 false true -200000000 -200 [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 -38000000 -38 false false 2 false true 47000000 47 [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 51000000 51 false false 2 false true 40000000 40 [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 364000000 364 false false 2 false true 226000000 226 [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 375000000 375 false false 2 false true 0 0 [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 21000000 21 false false 2 false true -10000000 -10 [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 -26000000 -26 false false 2 false true -27000000 -27 [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 1525000000 1525 false false 2 false true 865000000 865 [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 -938000000 -938 false false 2 false true -1114000000 -1114 [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 -217000000 -217 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 9000000 9 false false 2 false true 16000000 16 [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 -99000000 -99 false false 2 false true -173000000 -173 [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 93000000 93 false false 2 false true 177000000 177 [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 -14000000 -14 false false 2 false true -15000000 -15 [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 -987000000 -987 false false 2 false true -1158000000 -1158 [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 -170000000 -170 false false 2 false true -166000000 -166 [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 -5000000 -5 false false 2 false true -5000000 -5 [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 28000000 28 false false 2 false true 11000000 11 [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 1108000000 1108 false false 2 false true 593000000 593 [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 -311000000 -311 false false 2 false true -73000000 -73 [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 -612000000 -612 false false 2 false true 496000000 496 [1] false false No definition available. No authoritative reference available. false 40 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 41 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 5000000 5 false false 2 false true 1000000 1 [1] false false No definition available. No authoritative reference available. false 42 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 -51000000 -51 false false 2 false true -145000000 -145 [1] false false No definition available. No authoritative reference available. true 43 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 487000000 487 false false 2 false true -438000000 -438 [1] false false No definition available. No authoritative reference available. true 44 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 45 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 818000000 818 false false 2 false true 230000000 230 [1] false false No definition available. No authoritative reference available. false 46 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 47 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 141000000 141 false false 2 false true 157000000 157 false false No definition available. No authoritative reference available. false 48 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 36000000 36 false false 2 false true 140000000 140 false false No definition available. No authoritative reference available. false 49 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 50 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 -103000000 -103 false false 2 false true -62000000 -62 false false No definition available. No authoritative reference available. false 51 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 98000000 98 false false 2 false true 89000000 89 false false No definition available. No authoritative reference available. false 52 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 53 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 54 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 198000000 198 false false 2 false true 152000000 152 [1] false false No definition available. No authoritative reference available. false 55 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 57 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 158000000 158 false false 2 false true 155000000 155 [1] false false No definition available. No authoritative reference available. false 58 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 15000000 15 false false 2 false true 41000000 41 [1] false false No definition available. No authoritative reference available. false 62 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 -34000000 -34 false false 2 false true -15000000 -15 [1] false false No definition available. No authoritative reference available. false 63 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 -9000000 -9 false false 2 false true -3000000 -3 [1] false false No definition available. No authoritative reference available. false 64 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 30000000 30 false false 2 false true 108000000 108 [1] false false No definition available. No authoritative reference available. false 66 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 13000000 13 false false 2 false true -2000000 -2 [1] false false No definition available. No authoritative reference available. false 67 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 -23000000 -23 false false 2 false true -15000000 -15 [1] false false No definition available. No authoritative reference available. false 68 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 348000000 348 false false 2 false true 421000000 421 [1] false false No definition available. No authoritative reference available. true 69 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 70 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 -443000000 -443 false false 2 false true -428000000 -428 [1] false false No definition available. No authoritative reference available. false 73 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 -236000000 -236 [1] false false No definition available. No authoritative reference available. false 74 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 75000000 75 [1] false false No definition available. No authoritative reference available. false 76 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 -95000000 -95 false false 2 false true -173000000 -173 [1] false false No definition available. No authoritative reference available. false 77 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 93000000 93 false false 2 false true 175000000 175 [1] false false No definition available. No authoritative reference available. false 78 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 -24000000 -24 [1] false false No definition available. No authoritative reference available. false 79 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 80 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 -387000000 -387 false false 2 false true -611000000 -611 [1] false false No definition available. No authoritative reference available. true 81 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 82 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 83 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 -2000000 -2 false false 2 false true -2000000 -2 [1] false false No definition available. No authoritative reference available. false 87 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 88 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 358000000 358 false false 2 false true 84000000 84 [1] false false No definition available. No authoritative reference available. false 92 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 1000000 1 false false 2 false true 8000000 8 [1] false false No definition available. No authoritative reference available. false 93 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 207000000 207 false false 2 false true 76000000 76 [1] false false No definition available. No authoritative reference available. true 94 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 168000000 168 false false 2 false true -114000000 -114 [1] false false No definition available. No authoritative reference available. true 95 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 96 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 187000000 187 false false 2 false true 44000000 44 [1] false false No definition available. No authoritative reference available. false 97 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 98 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 50000000 50 false false 2 false true 47000000 47 false false No definition available. No authoritative reference available. false 99 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 86000000 86 false false 2 false true -17000000 -17 false false No definition available. No authoritative reference available. false 100 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 101 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 -61000000 -61 false false 2 false true -35000000 -35 false false No definition available. No authoritative reference available. false 102 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 103 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 104 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 105 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 122000000 122 false false 2 false true 116000000 116 [1] false false No definition available. No authoritative reference available. false 106 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 108 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 147000000 147 false false 2 false true 142000000 142 [1] false false No definition available. No authoritative reference available. false 109 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 20000000 20 false false 2 false true 21000000 21 [1] false false No definition available. No authoritative reference available. false 114 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 4000000 4 false false 2 false true 1000000 1 [1] false false No definition available. No authoritative reference available. false 115 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 266000000 266 false false 2 false true 315000000 315 [1] false false No definition available. No authoritative reference available. false 117 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 7000000 7 false false 2 false true 5000000 5 [1] false false No definition available. No authoritative reference available. false 118 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 -9000000 -9 false false 2 false true -20000000 -20 [1] false false No definition available. No authoritative reference available. false 119 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 557000000 557 false false 2 false true 580000000 580 [1] false false No definition available. No authoritative reference available. true 120 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 121 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 -227000000 -227 false false 2 false true -242000000 -242 [1] false false No definition available. No authoritative reference available. false 129 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 5000000 5 false false 2 false true -59000000 -59 [1] false false No definition available. No authoritative reference available. false 131 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 -222000000 -222 false false 2 false true -301000000 -301 [1] false false No definition available. No authoritative reference available. true 132 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 133 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 134 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 -2000000 -2 false false 2 false true -2000000 -2 [1] false false No definition available. No authoritative reference available. false 135 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 144 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 -3000000 -3 false false 2 false true -203000000 -203 [1] false false No definition available. No authoritative reference available. true 145 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 332000000 332 false false 2 false true 76000000 76 [1] false false No definition available. No authoritative reference available. true 146 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 147 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 538000000 538 false false 2 false true 135000000 135 [1] false false No definition available. No authoritative reference available. false 148 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 149 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 30000000 30 false false 2 false true 31000000 31 false false No definition available. No authoritative reference available. false 150 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 29000000 29 false false 2 false true 104000000 104 false false No definition available. No authoritative reference available. false 151 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 152 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 -16000000 -16 false false 2 false true -31000000 -31 false false No definition available. No authoritative reference available. false 153 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 154 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 155 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 156 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 125000000 125 false false 2 false true 114000000 114 false false No definition available. No authoritative reference available. false 157 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 159 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 147000000 147 false false 2 false true 142000000 142 false false No definition available. No authoritative reference available. false 160 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 20000000 20 false false 2 false true 21000000 21 false false No definition available. No authoritative reference available. false 165 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 4000000 4 false false 2 false true 1000000 1 false false No definition available. No authoritative reference available. false 166 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 263000000 263 false false 2 false true 313000000 313 false false No definition available. No authoritative reference available. false 168 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 7000000 7 false false 2 false true 5000000 5 false false No definition available. No authoritative reference available. false 169 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 -6000000 -6 false false 2 false true -20000000 -20 false false No definition available. No authoritative reference available. false 170 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 560000000 560 false false 2 false true 576000000 576 false false No definition available. No authoritative reference available. true 171 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 172 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 -227000000 -227 false false 2 false true -242000000 -242 false false No definition available. No authoritative reference available. false 180 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 -57000000 -57 false false No definition available. No authoritative reference available. false 182 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 -227000000 -227 false false 2 false true -299000000 -299 false false No definition available. No authoritative reference available. true 183 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 184 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 185 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 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 -201000000 -201 false false No definition available. No authoritative reference available. true 196 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 332000000 332 false false 2 false true 76000000 76 false false No definition available. No authoritative reference available. true 197 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 198 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 538000000 538 false false 2 false true 135000000 135 false false No definition available. No authoritative reference available. false 199 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 200 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 30000000 30 false false 2 false true 29000000 29 false false No definition available. No authoritative reference available. false 201 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 29000000 29 false false 2 false true 104000000 104 false false No definition available. No authoritative reference available. false 202 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 203 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 -16000000 -16 false false 2 true true -31000000 -31 false false No definition available. No authoritative reference available. false 1 As adjusted for the retrospective adoption of SFAS 160 (ASC 810). false 2 139 false Millions UnKnown UnKnown false true