2.4.0.8041020 - Disclosure - COMMITMENTS AND CONTINGENCIES - CONTRACTUAL COMMITMENTS (Details)truefalseIn Millions, unless otherwise specifiedfalse1false USDfalsefalse$FROM_Apr01_2013_TO_Jun30_2013_sre_CommitmentFootnoteAxis_SanDiegoGasAndElectricCompanyAndSubsidiaryMemberhttp://www.sec.gov/CIK0001032208duration2013-04-01T00:00:002013-06-30T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse1false USDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_sre_CommitmentFootnoteAxis_SanDiegoGasAndElectricCompanyAndSubsidiaryMemberhttp://www.sec.gov/CIK0001032208duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseSan Diego Gas and Electric Company and Subsidiary [Member]sre_CommitmentFootnoteAxisxbrldihttp://xbrl.org/2006/xbrldisre_SanDiegoGasAndElectricCompanyAndSubsidiaryMembersre_CommitmentFootnoteAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0San Diego Gas and Electric Company and Subsidiary [Member]2true 3sre_PaymentsUnderContractualCommitmentsLineItemssre_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Payments Under Contractual Commitments [Line Items]3false 4sre_IncreaseDecreaseInPurchasedPowerCommitmentsPaymentsDueCurrentsre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse70000007USD$falsetruefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Purchased Power Commitments, Payments Due, Current4false 4sre_IncreaseDecreaseInPurchasedPowerCommitmentsPaymentsDueInTwoYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse8100000081USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Purchased Power Commitments, Payments Due In Two Years5false 4sre_IncreaseDecreaseInPurchasedPowerCommitmentsPaymentsDueInThreeYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse124000000124USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Purchased Power Commitments, Payments Due In Three Years6false 4sre_IncreaseDecreaseInPurchasedPowerCommitmentsPaymentsDueInFourYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse125000000125USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Purchased Power Commitments, Payments Due In Four Years7false 4sre_IncreaseDecreaseInPurchasedPowerCommitmentsPaymentsDueInFiveYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse125000000125USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Purchased Power Commitments, Payments Due In Five Years8false 4sre_IncreaseDecreaseInPurchasedPowerCommitmentsPaymentsDueThereaftersre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse24000000002400USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Purchased Power Commitments, Payments Due Thereafter9false 4sre_IncreaseDecreasePurchaseCommitmentAmountsre_falsecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse29000000002900USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Purchase Commitment Amount10false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2false USDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_sre_CommitmentFootnoteAxis_SouthernCaliforniaGasCompanyMemberhttp://www.sec.gov/CIK0001032208duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseSouthern California Gas Company [Member]sre_CommitmentFootnoteAxisxbrldihttp://xbrl.org/2006/xbrldisre_SouthernCaliforniaGasCompanyMembersre_CommitmentFootnoteAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Southern California Gas Company [Member]11true 3sre_PaymentsUnderContractualCommitmentsLineItemssre_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Payments Under Contractual Commitments [Line Items]12false 4sre_IncreaseDecreaseInNaturalGasContractsCommitmentssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse-112000000-112USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Natural Gas Contracts Commitments13false 4sre_DecreaseInNaturalGasContractsCommitmentsFulfillmentsre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse366000000366USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Decrease In Natural Gas Contracts Commitments, Fulfillment14false 4sre_IncreaseInNaturalGasContractsCommitmentsNewContractssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse254000000254USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase In Natural Gas Contracts Commitments, New Contracts15false 4sre_IncreaseDecreaseInNaturalGasContractsCommitmentsPaymentsDueCurrentsre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse-220000000-220USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Natural Gas Contracts Commitments, Payments Due, Current16false 4sre_IncreaseDecreaseInNaturalGasContractsCommitmentsPaymentsDueInTwoYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse108000000108USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Natural Gas Contracts Commitments, Payments Due In Two Years17false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse3false USDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_sre_CommitmentFootnoteAxis_SempraMexicoMemberhttp://www.sec.gov/CIK0001032208duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseSempra Mexico [Member]sre_CommitmentFootnoteAxisxbrldihttp://xbrl.org/2006/xbrldisre_SempraMexicoMembersre_CommitmentFootnoteAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Sempra Mexico [Member]18true 3us-gaap_LongTermPurchaseCommitmentLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Long-term Purchase Commitment [Line Items]19false 4us-gaap_LongTermPurchaseCommitmentAmountus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse374000000374USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe minimum amount the entity agreed to spend under the long-term purchase commitment.No definition available.false2Long-term Purchase Commitment, Amount20true 3sre_PaymentsUnderContractualCommitmentsLineItemssre_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Payments Under Contractual Commitments [Line Items]21false 4sre_ContractualCommitmentsPaymentsDueCurrentsre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse101000000101USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due, Current22false 4sre_ContractualCommitmentsPaymentsDueInTwoYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse303000000303USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due In Two Years23false 4sre_ContractualCommitmentsPaymentsDueInThreeYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse114000000114USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due In Three Years24false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse4false USDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_sre_CommitmentFootnoteAxis_SempraNaturalGasMemberhttp://www.sec.gov/CIK0001032208duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseSempra Natural Gas [Member]sre_CommitmentFootnoteAxisxbrldihttp://xbrl.org/2006/xbrldisre_SempraNaturalGasMembersre_CommitmentFootnoteAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Sempra Natural Gas [Member]25true 3sre_PaymentsUnderContractualCommitmentsLineItemssre_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Payments Under Contractual Commitments [Line Items]26false 4sre_IncreaseDecreaseInLiquefiedNaturalGasCommitmentsPaymentsDueCurrentsre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse-281000000-281USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Liquefied Natural Gas Commitments, Payments Due, Current27false 4sre_IncreaseDecreaseInLiquefiedNaturalGasCommitmentsPaymentsDueInTwoYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse-35000000-35USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Liquefied Natural Gas Commitments, Payments Due In Two Years28false 4sre_IncreaseDecreaseInLiquefiedNaturalGasCommitmentsPaymentsDueInThreeYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse-23000000-23USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Liquefied Natural Gas Commitments, Payments Due In Three Years29false 4sre_IncreaseDecreaseInLiquefiedNaturalGasCommitmentsPaymentsDueInFourYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse-18000000-18USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Liquefied Natural Gas Commitments, Payments Due In Four Years30false 4sre_IncreaseDecreaseInLiquefiedNaturalGasCommitmentsPaymentsDueInFiveYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse-10000000-10USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Liquefied Natural Gas Commitments, Payments Due In Five Years31false 4sre_IncreaseDecreaseInLiquefiedNaturalGasCommitmentsPaymentsDueThereaftersre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse666000000666USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Liquefied Natural Gas Commitments, Payments Due Thereafter32false 4sre_IncreaseDecreaseInNaturalGasContractsCommitmentssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse1100000011USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Natural Gas Contracts Commitments33false 4sre_IncreaseDecreaseInNaturalGasContractsCommitmentsPaymentsDueCurrentsre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse-29000000-29USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Natural Gas Contracts Commitments, Payments Due, Current34false 4sre_IncreaseDecreaseInNaturalGasContractsCommitmentsPaymentsDueInTwoYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse1200000012USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Natural Gas Contracts Commitments, Payments Due In Two Years35false 4sre_IncreaseDecreaseInNaturalGasContractsCommitmentsPaymentsDueInThreeYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse50000005USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Natural Gas Contracts Commitments, Payments Due In Three Years36false 4sre_IncreaseDecreaseInNaturalGasContractsCommitmentsPaymentsDueInFourYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse50000005USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Natural Gas Contracts Commitments, Payments Due In Four Years37false 4sre_IncreaseDecreaseInNaturalGasContractsCommitmentsPaymentsDueInFiveYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse50000005USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Natural Gas Contracts Commitments, Payments Due In Five Years38false 4sre_IncreaseDecreaseInNaturalGasContractsCommitmentsPaymentsDueThereaftersre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse1300000013USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Increase (Decrease) In Natural Gas Contracts Commitments, Payments Due Thereafter39false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse5false USDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_sre_CommitmentFootnoteAxis_SempraNaturalGasMember_sre_ContractualCommitmentByCategoryAxis_OperationsAndMaintenanceMesquitePowerMemberhttp://www.sec.gov/CIK0001032208duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseSempra Natural Gas [Member]sre_CommitmentFootnoteAxisxbrldihttp://xbrl.org/2006/xbrldisre_SempraNaturalGasMembersre_CommitmentFootnoteAxisexplicitMemberfalsefalseOperations And Maintenance Mesquite Power [Member]sre_ContractualCommitmentByCategoryAxisxbrldihttp://xbrl.org/2006/xbrldisre_OperationsAndMaintenanceMesquitePowerMembersre_ContractualCommitmentByCategoryAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Sempra Natural Gas [Member] | Operations And Maintenance Mesquite Power [Member]40true 3sre_PaymentsUnderContractualCommitmentsLineItemssre_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Payments Under Contractual Commitments [Line Items]41false 4sre_ContractualCommitmentsPaymentsDueCurrentsre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse10000001USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due, Current42false 4sre_ContractualCommitmentsPaymentsDueInTwoYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20000002USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due In Two Years43false 4sre_ContractualCommitmentsPaymentsDueInThreeYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20000002USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due In Three Years44false 4sre_ContractualCommitmentsPaymentsDueInFourYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20000002USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due In Four Years45false 4sre_ContractualCommitmentsPaymentsDueInFiveYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20000002USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due In Five Years46false 4sre_ContractualCommitmentsPaymentsDueThereaftersre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse2700000027USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due Thereafter47false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse6false USDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_sre_CommitmentFootnoteAxis_SempraRenewablesMemberhttp://www.sec.gov/CIK0001032208duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseSempra Renewables [Member]sre_CommitmentFootnoteAxisxbrldihttp://xbrl.org/2006/xbrldisre_SempraRenewablesMembersre_CommitmentFootnoteAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Sempra Renewables [Member]48true 3us-gaap_LongTermPurchaseCommitmentLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Long-term Purchase Commitment [Line Items]49false 4us-gaap_LongTermPurchaseCommitmentAmountus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse4200000042USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe minimum amount the entity agreed to spend under the long-term purchase commitment.No definition available.false2Long-term Purchase Commitment, Amount50false 4us-gaap_GuaranteeObligationsMaximumExposureus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse170000000170USD$falsefalsefalsexbrli:monetaryItemTypemonetaryMaximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 45 -Paragraph 13 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 false2Guarantee Obligations Maximum Exposure51false 4us-gaap_GuaranteeObligationsCurrentCarryingValueus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse1400000014USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 45 -Paragraph 13 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2Guarantee Obligations Current Carrying Value52true 3sre_PaymentsUnderContractualCommitmentsLineItemssre_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Payments Under Contractual Commitments [Line Items]53false 4sre_ContractualCommitmentsPaymentsDueCurrentsre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse4100000041USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due, Current54false 4sre_ContractualCommitmentsPaymentsDueInTwoYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse10000001USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due In Two Years55true 3sre_OperatingLeasesLineItemssre_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Operating Leases [Line Items]56false 4us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYearsus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20000002USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 122 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph b(i) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2Operating Leases, Future Minimum Payments, Due in Two Years57false 4us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYearsus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20000002USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 122 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph b(i) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2Operating Leases, Future Minimum Payments, Due in Three Years58false 4us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYearsus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20000002USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 122 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph b(i) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2Operating Leases, Future Minimum Payments, Due in Four Years59false 4us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYearsus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20000002USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 122 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph b(i) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2Operating Leases, Future Minimum Payments, Due in Five Years60false 4us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafterus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse7500000075USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of required minimum rental payments maturing after the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 122 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph b(i) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2Operating Leases, Future Minimum Payments, Due Thereafter61false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse7false USDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_sre_CommitmentFootnoteAxis_SempraRockiesMarketingMemberhttp://www.sec.gov/CIK0001032208duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseSempra Rockies Marketing [Member]sre_CommitmentFootnoteAxisxbrldihttp://xbrl.org/2006/xbrldisre_SempraRockiesMarketingMembersre_CommitmentFootnoteAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Sempra Rockies Marketing [Member]62true 3sre_PaymentsUnderContractualCommitmentsLineItemssre_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Payments Under Contractual Commitments [Line Items]63false 4sre_ContractualCommitmentsPaymentsDueCurrentsre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse60000006USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due, Current64false 4sre_ContractualCommitmentsPaymentsDueInTwoYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse1400000014USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due In Two Years65false 4sre_ContractualCommitmentsPaymentsDueInThreeYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse1400000014USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due In Three Years66false 4sre_ContractualCommitmentsPaymentsDueInFourYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse1400000014USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due In Four Years67false 4sre_ContractualCommitmentsPaymentsDueInFiveYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse1400000014USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due In Five Years68false 4sre_ContractualCommitmentsPaymentsDueThereaftersre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse8300000083USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due Thereafter69false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse8false USDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_sre_CommitmentFootnoteAxis_PipelineSafetyEnhancementProgramMemberhttp://www.sec.gov/CIK0001032208duration2013-04-01T00:00:002013-06-30T00:00:00falsefalsePipeline Safety Enhancement Program [Member]sre_CommitmentFootnoteAxisxbrldihttp://xbrl.org/2006/xbrldisre_PipelineSafetyEnhancementProgramMembersre_CommitmentFootnoteAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Pipeline Safety Enhancement Program [Member]70true 3us-gaap_LongTermPurchaseCommitmentLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Long-term Purchase Commitment [Line Items]71false 4us-gaap_LongTermPurchaseCommitmentAmountus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse2800000028USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe minimum amount the entity agreed to spend under the long-term purchase commitment.No definition available.false2Long-term Purchase Commitment, Amount72true 3sre_PaymentsUnderContractualCommitmentsLineItemssre_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Payments Under Contractual Commitments [Line Items]73false 4sre_ContractualCommitmentsPaymentsDueCurrentsre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse2600000026USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due, Current74false 4sre_ContractualCommitmentsPaymentsDueInTwoYearssre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20000002USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Contractual Commitments, Payments Due In Two Years75false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse9false USDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_sre_CommitmentFootnoteAxis_EnergiaSierraJuarezWindProjectMemberhttp://www.sec.gov/CIK0001032208duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseEnergia Sierra Juarez wind project [Member]sre_CommitmentFootnoteAxisxbrldihttp://xbrl.org/2006/xbrldisre_EnergiaSierraJuarezWindProjectMembersre_CommitmentFootnoteAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Energia Sierra Juarez wind project [Member]76true 3us-gaap_LongTermPurchaseCommitmentLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Long-term Purchase Commitment [Line Items]77false 4us-gaap_LongTermPurchaseCommitmentAmountus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse144000000144USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe minimum amount the entity agreed to spend under the long-term purchase commitment.No definition available.false2Long-term Purchase Commitment, Amount78false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse10false USDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_sre_CommitmentFootnoteAxis_SempraNaturalGasMember_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_OperationsAndMaintenanceMesquitePowerMemberhttp://www.sec.gov/CIK0001032208duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseOperations And Maintenance Mesquite Power [Member]us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxisxbrldihttp://xbrl.org/2006/xbrldisre_OperationsAndMaintenanceMesquitePowerMemberus-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxisexplicitMemberfalsefalseSempra Natural Gas [Member]sre_CommitmentFootnoteAxisxbrldihttp://xbrl.org/2006/xbrldisre_SempraNaturalGasMembersre_CommitmentFootnoteAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Operations And Maintenance Mesquite Power [Member] | Sempra Natural Gas [Member]79true 3us-gaap_LongTermPurchaseCommitmentLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Long-term Purchase Commitment [Line Items]80false 4us-gaap_LongTermPurchaseCommitmentAmountus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse3600000036USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe minimum amount the entity agreed to spend under the long-term purchase commitment.No definition available.false2Long-term Purchase Commitment, AmountfalseCOMMITMENTS AND CONTINGENCIES - CONTRACTUAL COMMITMENTS (Details) (USD $)MillionsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.sempra.com/role/DisclosureCOMMITMENTSANDCONTINGENCIESCONTRACTUALCOMMITMENTSDetails180