v2.4.1.9

DERIVATIVE FINANCIAL INSTRUMENTS 5 (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Cash Flow Hedge Disclosure [Line Items] |  |
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | $ 23 us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths |
Maximum Length Time Hedged In Cash Flow Hedge | 14 years |
Joint Venture Maximum Length Of Time Hedged In Cash Flow Hedge | 20 years |
Cash Flow Hedge Gain (Loss) To Be Reclassified Within Twelve Months For Noncontrolling Interest | 13 sre_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsForNoncontrollingInterest |
Cash Flow Hedge Ineffectiveness | 0 us-gaap_GainLossOnCashFlowHedgeIneffectivenessNet | 0 us-gaap_GainLossOnCashFlowHedgeIneffectivenessNet
San Diego Gas and Electric Company [Member] |  |
Cash Flow Hedge Disclosure [Line Items] |  |
Maximum Length Time Hedged In Cash Flow Hedge | 4 years |
Cash Flow Hedge Gain (Loss) To Be Reclassified Within Twelve Months For Noncontrolling Interest | 12 sre_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsForNoncontrollingInterest / dei_LegalEntityAxis = sre_SanDiegoGasAndElectricCompanyMember |
Southern California Gas Company [Member] |  |
Cash Flow Hedge Disclosure [Line Items] |  |
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | $ 0 us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember |

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- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 + Details
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- Definition The net gain (loss) recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
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