<?xml version="1.0" encoding="utf-8"?>
<FilingSummary xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Version>2.4.0.6</Version>
  <ProcessingTime />
  <ReportFormat>Html</ReportFormat>
  <ContextCount>285</ContextCount>
  <ElementCount>287</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>69</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0001000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/DocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
    </Report>
    <Report>
      <IsDefault>true</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>1001000 - Statement - CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/ConsolidatedBalanceSheets</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>1001500 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/ConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS (Parenthetical)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>1003000 - Statement - CONSOLIDATED STATEMENTS OF INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/ConsolidatedStatementsOfIncome</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF INCOME</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>1003500 - Statement - CONSOLIDATED STATEMENTS OF INCOME (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/ConsolidatedStatementsOfIncomeParenthetical</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF INCOME (Parenthetical)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>1004000 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/ConsolidatedStatementsOfComprehensiveIncome</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>1004500 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeParenthetical</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>1005000 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/ConsolidatedStatementsOfCashFlows</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>1005500 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/ConsolidatedStatementsOfCashFlowsParentheticals</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS (Parentheticals)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>2101100 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/SummaryOfSignificantAccountingPolicies</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>2102100 - Disclosure - RATE AND OTHER REGULATORY MATTERS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/RateAndOtherRegulatoryMatters</Role>
      <ShortName>RATE AND OTHER REGULATORY MATTERS</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>2103100 - Disclosure - COMMON EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/CommonEquity</Role>
      <ShortName>COMMON EQUITY</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>2104100 - Disclosure - LONG-TERM AND SHORT-TERM DEBT</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/LongTermAndShortTermDebt</Role>
      <ShortName>LONG-TERM AND SHORT-TERM DEBT</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>2105100 - Disclosure - INCOME TAXES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/IncomeTaxes</Role>
      <ShortName>INCOME TAXES</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>2106100 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/DerivativeFinancialInstruments</Role>
      <ShortName>DERIVATIVE FINANCIAL INSTRUMENTS</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>2107100 - Disclosure - FAIR VALUE MEASUREMENTS, INCLUDING DERIVATIVES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/FairValueMeasurementsIncludingDerivatives</Role>
      <ShortName>FAIR VALUE MEASUREMENTS, INCLUDING DERIVATIVES</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>2108100 - Disclosure - EMPLOYEE BENEFIT PLANS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/EmployeeBenefitPlans</Role>
      <ShortName>EMPLOYEE BENEFIT PLANS</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>2110100 - Disclosure - COMMITMENTS AND CONTINGENCIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/CommitmentsAndContingencies</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>2112100 - Disclosure - SEGMENT OF BUSINESS INFORMATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/SegmentOfBusinessInformation</Role>
      <ShortName>SEGMENT OF BUSINESS INFORMATION</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>2125100 - Disclosure - AFFILIATED TRANSACTIONS - SCEG</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/AffiliatedTransactionsSceg</Role>
      <ShortName>AFFILIATED TRANSACTIONS - SCEG</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>2201201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/SummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>2205201 - Disclosure - INCOME TAXES Income Taxes (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/IncomeTaxesIncomeTaxesPolicies</Role>
      <ShortName>INCOME TAXES Income Taxes (Policies)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>2301302 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/SummaryOfSignificantAccountingPoliciesTables</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>2302301 - Disclosure - RATE AND OTHER REGULATORY MATTERS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/RateAndOtherRegulatoryMattersTables</Role>
      <ShortName>RATE AND OTHER REGULATORY MATTERS (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>2303301 - Disclosure - COMMON EQUITY (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/CommonEquityTables</Role>
      <ShortName>COMMON EQUITY (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>2304301 - Disclosure - LONG-TERM AND SHORT-TERM DEBT LONG-TERM AND SHORT-TERM DEBT (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/LongTermAndShortTermDebtLongTermAndShortTermDebtTables</Role>
      <ShortName>LONG-TERM AND SHORT-TERM DEBT LONG-TERM AND SHORT-TERM DEBT (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>2306301 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/DerivativeFinancialInstrumentsTables</Role>
      <ShortName>DERIVATIVE FINANCIAL INSTRUMENTS (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>2307301 - Disclosure - FAIR VALUE MEASUREMENTS, INCLUDING DERIVATIVES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/FairValueMeasurementsIncludingDerivativesTables</Role>
      <ShortName>FAIR VALUE MEASUREMENTS, INCLUDING DERIVATIVES (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>2308301 - Disclosure - EMPLOYEE BENEFIT PLANS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/EmployeeBenefitPlansTables</Role>
      <ShortName>EMPLOYEE BENEFIT PLANS (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>2312301 - Disclosure - SEGMENT OF BUSINESS INFORMATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/SegmentOfBusinessInformationTables</Role>
      <ShortName>SEGMENT OF BUSINESS INFORMATION (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>2401403 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/SummaryOfSignificantAccountingPoliciesDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>2402402 - Disclosure - RATE AND OTHER REGULATORY MATTERS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/RateAndOtherRegulatoryMattersDetails</Role>
      <ShortName>RATE AND OTHER REGULATORY MATTERS (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>2402403 - Disclosure - RATE AND OTHER REGULATORY MATTERS (Details 2)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/RateAndOtherRegulatoryMattersDetails2</Role>
      <ShortName>RATE AND OTHER REGULATORY MATTERS (Details 2)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>2402404 - Disclosure - RATE AND OTHER REGULATORY MATTERS (Details 3)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/RateAndOtherRegulatoryMattersDetails3</Role>
      <ShortName>RATE AND OTHER REGULATORY MATTERS (Details 3)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>2403402 - Disclosure - COMMON EQUITY (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/CommonEquityDetails</Role>
      <ShortName>COMMON EQUITY (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>2404402 - Disclosure - LONG-TERM AND SHORT-TERM DEBT (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/LongTermAndShortTermDebtDetails</Role>
      <ShortName>LONG-TERM AND SHORT-TERM DEBT (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>2404403 - Disclosure - LONG-TERM AND SHORT-TERM DEBT (Details 2)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/LongTermAndShortTermDebtDetails2</Role>
      <ShortName>LONG-TERM AND SHORT-TERM DEBT (Details 2)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>2405403 - Disclosure - INCOME TAXES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/IncomeTaxesDetails</Role>
      <ShortName>INCOME TAXES (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>2406402 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/DerivativeFinancialInstrumentsDetails</Role>
      <ShortName>DERIVATIVE FINANCIAL INSTRUMENTS (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>2406403 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS (Details 2)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/DerivativeFinancialInstrumentsDetails2</Role>
      <ShortName>DERIVATIVE FINANCIAL INSTRUMENTS (Details 2)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>2406404 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS (Details 3)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/DerivativeFinancialInstrumentsDetails3</Role>
      <ShortName>DERIVATIVE FINANCIAL INSTRUMENTS (Details 3)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>2407402 - Disclosure - FAIR VALUE MEASUREMENTS, INCLUDING DERIVATIVES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/FairValueMeasurementsIncludingDerivativesDetails</Role>
      <ShortName>FAIR VALUE MEASUREMENTS, INCLUDING DERIVATIVES (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>2407403 - Disclosure - FAIR VALUE MEASUREMENTS, INCLUDING DERIVATIVES (Details 2)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/FairValueMeasurementsIncludingDerivativesDetails2</Role>
      <ShortName>FAIR VALUE MEASUREMENTS, INCLUDING DERIVATIVES (Details 2)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>2408402 - Disclosure - EMPLOYEE BENEFIT PLANS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/EmployeeBenefitPlansDetails</Role>
      <ShortName>EMPLOYEE BENEFIT PLANS (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>2410401 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/CommitmentsAndContingenciesDetails</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>2412402 - Disclosure - SEGMENT OF BUSINESS INFORMATION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/SegmentOfBusinessInformationDetails</Role>
      <ShortName>SEGMENT OF BUSINESS INFORMATION (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>2425401 - Disclosure - AFFILIATED TRANSACTIONS - SCEG AFFILIATED TRANSACTIONS -SCEG (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.scana.com/role/AffiliatedTransactionsScegAffiliatedTransactionsScegDetails</Role>
      <ShortName>AFFILIATED TRANSACTIONS - SCEG AFFILIATED TRANSACTIONS -SCEG (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <Logs>
    <Log type="Info">Element scg_AnnualStormDamageCostsNotOffsetByAmountsRecoveredThroughElectricRates had a mix of decimals attribute values: -5 1.</Log>
    <Log type="Info">Element scg_JointlyOwnedUtilityPlantPercentageShareOwner2 had a mix of decimals attribute values: 0 2.</Log>
    <Log type="Info">Element scg_PercentageOfEnergyRelatedInventoryNaturalGasInStorage had a mix of decimals attribute values: 0 2.</Log>
    <Log type="Info">Element scg_ShareInApprovedCapitalCosts had a mix of decimals attribute values: -6 -5.</Log>
    <Log type="Info">Element us-gaap_AvailableForSaleSecurities had a mix of decimals attribute values: -6 0.</Log>
    <Log type="Info">Element us-gaap_DebtWeightedAverageInterestRate had a mix of decimals attribute values: 0 4.</Log>
    <Log type="Info">Element us-gaap_DefinedBenefitPlanActuarialGainLoss had a mix of decimals attribute values: -5 -2 2.</Log>
    <Log type="Info">Element us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets had a mix of decimals attribute values: -5 1.</Log>
    <Log type="Info">Element us-gaap_DefinedBenefitPlanInterestCost had a mix of decimals attribute values: -5 2.</Log>
    <Log type="Info">Element us-gaap_DefinedBenefitPlanServiceCost had a mix of decimals attribute values: -5 -2 2.</Log>
    <Log type="Info">Element us-gaap_DerivativeAssets had a mix of decimals attribute values: -6 0.</Log>
    <Log type="Info">Element us-gaap_DerivativeFinancialInstrumentsLiabilitiesFairValueDisclosure had a mix of decimals attribute values: -6 0.</Log>
    <Log type="Info">Element us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet had a mix of decimals attribute values: -6 0.</Log>
    <Log type="Info">Element us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity had a mix of decimals attribute values: -8 -6 0.</Log>
    <Log type="Info">Element us-gaap_NotionalAmountOfInterestRateCashFlowHedgeDerivatives had a mix of decimals attribute values: -5 1.</Log>
    <Log type="Info">Element us-gaap_NotionalAmountOfInterestRateFairValueHedgeDerivatives had a mix of decimals attribute values: -5 1.</Log>
    <Log type="Info">Element us-gaap_OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostBeforeTax had a mix of decimals attribute values: -5 -2 2.</Log>
    <Log type="Info">Element us-gaap_RegulatoryAssetsNoncurrent had a mix of decimals attribute values: -6 -5.</Log>
    <Log type="Info">'Monetary' elements on report '2402402 - Disclosure - RATE AND OTHER REGULATORY MATTERS (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2402403 - Disclosure - RATE AND OTHER REGULATORY MATTERS (Details 2)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2402404 - Disclosure - RATE AND OTHER REGULATORY MATTERS (Details 3)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2404403 - Disclosure - LONG-TERM AND SHORT-TERM DEBT (Details 2)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2406404 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS (Details 3)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2408402 - Disclosure - EMPLOYEE BENEFIT PLANS (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2410401 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">Process Flow-Through: 1001000 - Statement - CONSOLIDATED BALANCE SHEETS</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Sep. 30, 2011'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Dec. 31, 2010'</Log>
    <Log type="Info">Process Flow-Through: 1001500 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</Log>
    <Log type="Info">Process Flow-Through: 1003000 - Statement - CONSOLIDATED STATEMENTS OF INCOME</Log>
    <Log type="Info">Process Flow-Through: 1003500 - Statement - CONSOLIDATED STATEMENTS OF INCOME (Parenthetical)</Log>
    <Log type="Info">Process Flow-Through: 1004000 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME</Log>
    <Log type="Info">Process Flow-Through: 1004500 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical)</Log>
    <Log type="Info">Process Flow-Through: 1005000 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</Log>
    <Log type="Info">Process Flow-Through: 1005500 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (Parentheticals)</Log>
  </Logs>
  <InputFiles>
    <File>scg-20120930.xml</File>
    <File>scg-20120930.xsd</File>
    <File>scg-20120930_cal.xml</File>
    <File>scg-20120930_def.xml</File>
    <File>scg-20120930_lab.xml</File>
    <File>scg-20120930_pre.xml</File>
  </InputFiles>
  <SupplementalFiles />
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
