2.2.0.25truefalse040515 - Disclosure - OTHER FINANCIAL DATA - EARNINGS PER SHARE (Details)truefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) $FROM_Jan01_2011_TO_Mar31_2011http://www.sec.gov/CIK0001032208duration2011-01-01T00:00:002011-03-31T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2falsefalseUSDfalsefalse1/1/2010 - 3/31/2010 USD ($) $FROM_Jan01_2010_TO_Mar31_2010http://www.sec.gov/CIK0001032208duration2010-01-01T00:00:002010-03-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0us-gaap_NetIncomeLossAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseEarnings Per Share Numerator [Abstract]3false0us-gaap_NetIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse258000000258000000falsetruefalsefalsefalse2truefalsefalse106000000106000000falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 falsefalseEarnings4true0sre_EarningsPerShareDenominatorAbstractsrefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseEarnings Per Share Denominator [Abstract]5false0us-gaap_WeightedAverageNumberOfSharesOutstandingBasicus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse240128000240128000falsefalsefalsefalsefalse2truefalsefalse246083000246083000falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesNumber of [basic] shares, after adjustment for contingently issuable shares and other shares not deemed outstanding, determined by relating the portion of time within a reporting period that common shares have been outstanding to the total time in that period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 falsefalseWeighted-average common shares outstanding for basic EPS6false0us-gaap_WeightedAverageNumberOfDilutedSharesOutstandingus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse241903000241903000falsefalsefalsefalsefalse2truefalsefalse250373000250373000falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesThe average number of shares issued and outstanding that are used in calculating diluted EPS, determined based on the timing of issuance of shares in the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 falsefalseWeighted-average common shares outstanding for diluted EPS7true0us-gaap_EarningsPerShareAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseEarnings Per Share [Abstract]8false0us-gaap_EarningsPerShareBasicus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse1.071.07falsetruefalsefalsefalse2truefalsefalse0.430.43falsetruefalsefalsefalseEPSus-types:perShareItemTypedecimalThe amount of net income or loss for the period per each share of common stock outstanding during the reporting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 36, 37, 38 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 falsetrueBasic earnings per common share9false0us-gaap_EarningsPerShareDilutedus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse1.071.07falsetruefalsefalsefalse2truefalsefalse0.420.42falsetruefalsefalsefalseEPSus-types:perShareItemTypedecimalThe amount of net income or loss for the period per each share of common stock and dilutive common stock equivalents outstanding during the reporting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 11, 12, 36 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 falsetrueDiluted earnings per common share10true0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseAntidilutive Securities Excluded From Computation of Earnings Per Share [Line Items]11false0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmountus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse21809002180900falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesSecurities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 13, 14 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph c falsefalseAntidilutive securities excluded from computation of earnings per share13false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.sempra.com/role/disclosureotherfinancialdataearningspersharedetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalseUSDtruefalse{dei_LegalEntityAxis} : San Diego Gas and Electric Company and Subsidiary [Member] 1/1/2011 - 3/31/2011 USD ($) $FROM_Jan01_2011_TO_Mar31_2011_dei_LegalEntityAxis_SanDiegoGasAndElectricCompanyAndSubsidiaryMemberhttp://www.sec.gov/CIK0001032208duration2011-01-01T00:00:002011-03-31T00:00:00falsefalseSan Diego Gas and Electric Company and Subsidiary [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldisre_SanDiegoGasAndElectricCompanyAndSubsidiaryMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$4falsefalseUSDtruefalse{dei_LegalEntityAxis} : San Diego Gas and Electric Company and Subsidiary [Member] 1/1/2010 - 3/31/2010 USD ($) $FROM_Jan01_2010_TO_Mar31_2010_dei_LegalEntityAxis_SanDiegoGasAndElectricCompanyAndSubsidiaryMemberhttp://www.sec.gov/CIK0001032208duration2010-01-01T00:00:002010-03-31T00:00:00falsefalseSan Diego Gas and Electric Company and Subsidiary [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldisre_SanDiegoGasAndElectricCompanyAndSubsidiaryMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseSan Diego Gas and Electric Company and Subsidiary [Member]14true0us-gaap_NetIncomeLossAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseEarnings Per Share Numerator [Abstract]15false0us-gaap_NetIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse9000000090000000falsefalsefalsefalsefalse2truefalsefalse8400000084000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 falsefalseEarnings20false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.sempra.com/role/disclosureotherfinancialdataearningspersharedetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse5falsefalseUSDtruefalse{dei_LegalEntityAxis} : Pacific Enterprises [Member] 1/1/2011 - 3/31/2011 USD ($) $FROM_Jan01_2011_TO_Mar31_2011_dei_LegalEntityAxis_PacificEnterprisesMemberhttp://www.sec.gov/CIK0001032208duration2011-01-01T00:00:002011-03-31T00:00:00falsefalsePacific Enterprises [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldisre_PacificEnterprisesMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$6falsefalseUSDtruefalse{dei_LegalEntityAxis} : Pacific Enterprises [Member] 1/1/2010 - 3/31/2010 USD ($) $FROM_Jan01_2010_TO_Mar31_2010_dei_LegalEntityAxis_PacificEnterprisesMemberhttp://www.sec.gov/CIK0001032208duration2010-01-01T00:00:002010-03-31T00:00:00falsefalsePacific Enterprises [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldisre_PacificEnterprisesMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePacific Enterprises [Member]21true0us-gaap_NetIncomeLossAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseEarnings Per Share Numerator [Abstract]22false0us-gaap_NetIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse6800000068000000falsefalsefalsefalsefalse2truefalsefalse6500000065000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 falsefalseEarnings27false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.sempra.com/role/disclosureotherfinancialdataearningspersharedetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse7falsefalseUSDtruefalse{dei_LegalEntityAxis} : Southern California Gas Company [Member] 1/1/2011 - 3/31/2011 USD ($) $FROM_Jan01_2011_TO_Mar31_2011_dei_LegalEntityAxis_SouthernCaliforniaGasCompanyMemberhttp://www.sec.gov/CIK0001032208duration2011-01-01T00:00:002011-03-31T00:00:00falsefalseSouthern California Gas Company [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldisre_SouthernCaliforniaGasCompanyMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$8falsefalseUSDtruefalse{dei_LegalEntityAxis} : Southern California Gas Company [Member] 1/1/2010 - 3/31/2010 USD ($) $FROM_Jan01_2010_TO_Mar31_2010_dei_LegalEntityAxis_SouthernCaliforniaGasCompanyMemberhttp://www.sec.gov/CIK0001032208duration2010-01-01T00:00:002010-03-31T00:00:00falsefalseSouthern California Gas Company [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldisre_SouthernCaliforniaGasCompanyMemberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseSouthern California Gas Company [Member]28true0us-gaap_NetIncomeLossAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseEarnings Per Share Numerator [Abstract]29false0us-gaap_NetIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse6800000068000000falsefalsefalsefalsefalse2truefalsefalse6500000065000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 falsefalseEarnings34false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.sempra.com/role/disclosureotherfinancialdataearningspersharedetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse9falsefalsetruefalse{us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis} : Out Of The Money Stock Options [Member] 1/1/2011 - 3/31/2011 FROM_Jan01_2011_TO_Mar31_2011_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_OutOfTheMoneyStockOptionsMemberhttp://www.sec.gov/CIK0001032208duration2011-01-01T00:00:002011-03-31T00:00:00falsefalseOut Of The Money Stock Options [Member]us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldisre_OutOfTheMoneyStockOptionsMemberus-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxisexplicitMemberSharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0OthernaNo definition available.No authoritative reference available.falsefalseOut Of The Money Stock Options [Member]38true0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseAntidilutive Securities Excluded From Computation of Earnings Per Share [Line Items]39false0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmountus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse21202252120225falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesSecurities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 13, 14 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph c falsefalseAntidilutive securities excluded from computation of earnings per share41false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.sempra.com/role/disclosureotherfinancialdataearningspersharedetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse10falsefalsetruefalse{us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis} : In The Money Stock Options 1/1/2011 - 3/31/2011 FROM_Jan01_2011_TO_Mar31_2011_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_StockOptionsMemberhttp://www.sec.gov/CIK0001032208duration2011-01-01T00:00:002011-03-31T00:00:00falsefalseIn The Money Stock Optionsus-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_StockOptionsMemberus-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxisexplicitMemberSharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli011falsefalsetruefalse{us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis} : In The Money Stock Options 1/1/2010 - 3/31/2010 FROM_Jan01_2010_TO_Mar31_2010_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_StockOptionsMemberhttp://www.sec.gov/CIK0001032208duration2010-01-01T00:00:002010-03-31T00:00:00falsefalseIn The Money Stock Optionsus-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_StockOptionsMemberus-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxisexplicitMemberSharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0OthernaNo definition available.No authoritative reference available.falsefalseIn The Money Stock Options45true0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseAntidilutive Securities Excluded From Computation of Earnings Per Share [Line Items]46false0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmountus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse1080010800falsefalsefalsefalsefalse2truefalsefalse99009900falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesSecurities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 13, 14 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph c falsefalseAntidilutive securities excluded from computation of earnings per share48false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.sempra.com/role/disclosureotherfinancialdataearningspersharedetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse12falsefalsetruefalse{us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis} : Restricted Stock Units 1/1/2011 - 3/31/2011 FROM_Jan01_2011_TO_Mar31_2011_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_ContingentlyIssuableSharesMemberhttp://www.sec.gov/CIK0001032208duration2011-01-01T00:00:002011-03-31T00:00:00falsefalseRestricted Stock Unitsus-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ContingentlyIssuableSharesMemberus-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxisexplicitMemberSharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0OthernaNo definition available.No authoritative reference available.falsefalseRestricted Stock Units52true0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseAntidilutive Securities Excluded From Computation of Earnings Per Share [Line Items]53false0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmountus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse997609997609falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesSecurities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 13, 14 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph c falsefalseAntidilutive securities excluded from computation of earnings per share55false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.sempra.com/role/disclosureotherfinancialdataearningspersharedetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse13falsefalseUSDtruefalse{sre_ScheduleOfPerformanceBasedRestrictedSharesAxis} : Restricted Stock Units Member 1/1/2011 - 3/31/2011 USD ($) $FROM_Jan01_2011_TO_Mar31_2011_sre_ScheduleOfPerformanceBasedRestrictedSharesAxis_RestrictedStockUnitsMemberhttp://www.sec.gov/CIK0001032208duration2011-01-01T00:00:002011-03-31T00:00:00falsefalseRestricted Stock Units Membersre_ScheduleOfPerformanceBasedRestrictedSharesAxisxbrldihttp://xbrl.org/2006/xbrldisre_RestrictedStockUnitsMembersre_ScheduleOfPerformanceBasedRestrictedSharesAxisexplicitMemberSharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$14falsefalseUSDtruefalse{sre_ScheduleOfPerformanceBasedRestrictedSharesAxis} : Restricted Stock Units Member 1/1/2010 - 3/31/2010 USD ($) $FROM_Jan01_2010_TO_Mar31_2010_sre_ScheduleOfPerformanceBasedRestrictedSharesAxis_RestrictedStockUnitsMemberhttp://www.sec.gov/CIK0001032208duration2010-01-01T00:00:002010-03-31T00:00:00falsefalseRestricted Stock Units Membersre_ScheduleOfPerformanceBasedRestrictedSharesAxisxbrldihttp://xbrl.org/2006/xbrldisre_RestrictedStockUnitsMembersre_ScheduleOfPerformanceBasedRestrictedSharesAxisexplicitMemberSharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseRestricted Stock Units Member60true0sre_ScheduleOfPerformanceBasedRestrictedSharesLineItemssrefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseSchedule Of Performance Based Restricted Shares [Line Items]61false0sre_ContractualVestingPercentageMinimumsrefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalseMonetaryus-types:percentItemTypepureNo definition available.No authoritative reference available.falsefalseContractual vesting percentage minimum62false0sre_ContractualVestingPercentageMaximumsrefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truetruefalse1.501.50falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalseMonetaryus-types:percentItemTypepureNo definition available.No authoritative reference available.falsefalseContractual vesting percentage maximum63false0sre_EstimatedVestingPercentageMinimumsrefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truetruefalse0.700.70falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalseMonetaryus-types:percentItemTypepureNo definition available.No authoritative reference available.falsefalseEstimated vesting percentage minimum64false0sre_EstimatedVestingPercentageMaximumsrefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truetruefalse0.880.88falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalseMonetaryus-types:percentItemTypepureNo definition available.No authoritative reference available.falsefalseEstimated vesting percentage maximum65false0sre_EstimatedVestingPercentagesrefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsetruefalse00falsefalsefalsefalsefalse2truetruefalse1.501.50falsefalsefalsefalsefalseMonetaryus-types:percentItemTypepureNo definition available.No authoritative reference available.falsefalseEstimated vesting percentage66false0sre_SharesExcludedFromPotentialDilutiveSharessrefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse762592762592falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesNo definition available.No authoritative reference available.falsefalseShares excluded from potential dilutive shares67false0sre_SharesIncludedFromPotentialDilutiveSharessrefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse15976321597632falsefalsefalsefalsefalse2truefalsefalse23535352353535falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesNo definition available.No authoritative reference available.falsefalseShares included from potential dilutive shares68false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.sempra.com/role/disclosureotherfinancialdataearningspersharedetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse15falsefalseUSDtruefalse{sre_ScheduleOfPerformanceBasedRestrictedSharesAxis} : Restricted Stock Awards Member 1/1/2011 - 3/31/2011 USD ($) $FROM_Jan01_2011_TO_Mar31_2011_sre_ScheduleOfPerformanceBasedRestrictedSharesAxis_RestrictedStockAwardsMemberhttp://www.sec.gov/CIK0001032208duration2011-01-01T00:00:002011-03-31T00:00:00falsefalseRestricted Stock Awards Membersre_ScheduleOfPerformanceBasedRestrictedSharesAxisxbrldihttp://xbrl.org/2006/xbrldisre_RestrictedStockAwardsMembersre_ScheduleOfPerformanceBasedRestrictedSharesAxisexplicitMemberSharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$16falsefalseUSDtruefalse{sre_ScheduleOfPerformanceBasedRestrictedSharesAxis} : Restricted Stock Awards Member 1/1/2010 - 3/31/2010 USD ($) $FROM_Jan01_2010_TO_Mar31_2010_sre_ScheduleOfPerformanceBasedRestrictedSharesAxis_RestrictedStockAwardsMemberhttp://www.sec.gov/CIK0001032208duration2010-01-01T00:00:002010-03-31T00:00:00falsefalseRestricted Stock Awards Membersre_ScheduleOfPerformanceBasedRestrictedSharesAxisxbrldihttp://xbrl.org/2006/xbrldisre_RestrictedStockAwardsMembersre_ScheduleOfPerformanceBasedRestrictedSharesAxisexplicitMemberSharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseRestricted Stock Awards Member73true0sre_ScheduleOfPerformanceBasedRestrictedSharesLineItemssrefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseSchedule Of Performance Based Restricted Shares [Line Items]74false0sre_ContractualVestingPercentageMinimumsrefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalseMonetaryus-types:percentItemTypepureNo definition available.No authoritative reference available.falsefalseContractual vesting percentage minimum75false0sre_ContractualVestingPercentageMaximumsrefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truetruefalse1.001.00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalseMonetaryus-types:percentItemTypepureNo definition available.No authoritative reference available.falsefalseContractual vesting percentage maximum76false0sre_EstimatedVestingPercentagesrefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truetruefalse1.001.00falsetruefalsefalsefalse2truetruefalse1.001.00falsetruefalsefalsefalseMonetaryus-types:percentItemTypepureNo definition available.No authoritative reference available.falsefalseEstimated vesting percentage77false0sre_SharesIncludedFromPotentialDilutiveSharessrefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse2673326733falsefalsefalsefalsefalse2truefalsefalse850349850349falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesNo definition available.No authoritative reference available.falsefalseShares included from potential dilutive shares243OTHER FINANCIAL DATA - EARNINGS PER SHARE (Details) (USD $)NoRoundingNoRoundingNoRoundingUnKnownfalsetrue