2.4.0.8040900 - Disclosure - CALIFORNIA UTILITIES' REGULATORY MATTERS - SCHEDULE OF REGULATORY AMOUNTS 2 (Details)truefalsefalse1false USDfalsefalse$FROM_Apr01_2013_TO_Jun30_2013_dei_LegalEntityAxis_SouthernCaliforniaGasCompanyMemberhttp://www.sec.gov/CIK0001032208duration2013-04-01T00:00:002013-06-30T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$FROM_Jan01_2012_TO_Mar31_2012_dei_LegalEntityAxis_SouthernCaliforniaGasCompanyMemberhttp://www.sec.gov/CIK0001032208duration2012-01-01T00:00:002012-03-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse1false USDtruefalse$AS_OF_Jun30_2013_dei_LegalEntityAxis_SanDiegoGasAndElectricCompanyAndSubsidiaryMember_us-gaap_LossContingenciesByNatureOfContingencyAxis_LossFromCatastrophesMemberhttp://www.sec.gov/CIK0001032208instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseSan Diego Gas and Electric Company and Subsidiary [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldisre_SanDiegoGasAndElectricCompanyAndSubsidiaryMemberdei_LegalEntityAxisexplicitMemberfalsefalseLoss from Catastrophes [Member]us-gaap_LossContingenciesByNatureOfContingencyAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_LossFromCatastrophesMemberus-gaap_LossContingenciesByNatureOfContingencyAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0San Diego Gas and Electric Company and Subsidiary [Member] | Loss from Catastrophes [Member]2true 4sre_WildfireLineItemssre_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Wildfire [Line Items]3false 5sre_PotentialImpactOnEarningssre_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse190000000190000000USD$falsetruefalse2falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Potential Impact On Earnings4false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse2false USDtruefalse$FROM_Apr01_2013_TO_Jun30_2013_dei_LegalEntityAxis_SouthernCaliforniaGasCompanyMemberhttp://www.sec.gov/CIK0001032208duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseSouthern California Gas Company [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldisre_SouthernCaliforniaGasCompanyMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Southern California Gas Company [Member]5true 4sre_UtilityIncentiveAwardsLineItemssre_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Utility Incentive Awards [Line Items]6false 5sre_RecognizedGasCostIncentiveMechanismAwardsre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2truefalsefalse62000006200000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Recognized Gas Cost Incentive Mechanism Award7false 5sre_UnrecordedGasCostIncentiveMechanismAwardsre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse58000005800000USD$falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Unrecorded Gas Cost Incentive Mechanism Award8false 5sre_ApprovedGasCostIncentiveMechanismAwardUnrecordedsre_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse54000005400000USD$falsetruefalse2falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryNo authoritative reference available.No definition available.false2Approved Gas Cost Incentive Mechanism Award, UnrecordedfalseCALIFORNIA UTILITIES' REGULATORY MATTERS - SCHEDULE OF REGULATORY AMOUNTS 2 (Details) (USD $)NoRoundingUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.sempra.com/role/DisclosureCALIFORNIAUTILITIESREGULATORYMATTERSSCHEDULEOFREGULATORYAMOUNTS2Details28