<?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>2.2.0.25</Version>
  <ReportType />
  <MyReports>
    <Report>
      <IsDefault>true</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>00090 - Document - Document and Entity Information</LongName>
      <ShortName>Document and Entity Information</ShortName>
      <Role>http://www.solutia.com/role/DocumentDocumentAndEntityInformation</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R1.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>00100 - Statement - CONSOLIDATED STATEMENT OF OPERATIONS</LongName>
      <ShortName>CONSOLIDATED STATEMENT OF OPERATIONS</ShortName>
      <Role>http://www.solutia.com/role/StatementConsolidatedStatementOfOperations</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R2.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>00105 - Statement - CONSOLIDATED STATEMENT OF OPERATIONS (Parenthetical)</LongName>
      <ShortName>CONSOLIDATED STATEMENT OF OPERATIONS (Parenthetical)</ShortName>
      <Role>http://www.solutia.com/role/StatementConsolidatedStatementOfOperationsParenthetical</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R3.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>00200 - Statement - CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS)</LongName>
      <ShortName>CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS)</ShortName>
      <Role>http://www.solutia.com/role/StatementConsolidatedStatementOfComprehensiveIncomeLoss</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R4.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>00300 - Statement - CONSOLIDATED STATEMENT OF FINANCIAL POSITION</LongName>
      <ShortName>CONSOLIDATED STATEMENT OF FINANCIAL POSITION</ShortName>
      <Role>http://www.solutia.com/role/StatementConsolidatedStatementOfFinancialPosition</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R5.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>00305 - Statement - CONSOLIDATED STATEMENT OF FINANCIAL POSITION (Parenthetical)</LongName>
      <ShortName>CONSOLIDATED STATEMENT OF FINANCIAL POSITION (Parenthetical)</ShortName>
      <Role>http://www.solutia.com/role/StatementConsolidatedStatementOfFinancialPositionParenthetical</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R6.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>00400 - Statement - CONSOLIDATED STATEMENT OF CASH FLOWS</LongName>
      <ShortName>CONSOLIDATED STATEMENT OF CASH FLOWS</ShortName>
      <Role>http://www.solutia.com/role/StatementConsolidatedStatementOfCashFlows</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R7.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>00500 - Statement - CONSOLIDATED STATEMENT OF EQUITY (DEFICIT)</LongName>
      <ShortName>CONSOLIDATED STATEMENT OF EQUITY (DEFICIT)</ShortName>
      <Role>http://www.solutia.com/role/StatementConsolidatedStatementOfEquityDeficit</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R8.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>10101 - Disclosure - Background and Basis for Presentation</LongName>
      <ShortName>Background and Basis for Presentation</ShortName>
      <Role>http://www.solutia.com/role/DisclosureBackgroundAndBasisForPresentation</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R9.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>10201 - Disclosure - Fresh-Start Accounting</LongName>
      <ShortName>Fresh-Start Accounting</ShortName>
      <Role>http://www.solutia.com/role/DisclosureFreshStartAccounting</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R10.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>10301 - Disclosure - Significant Accounting Policies</LongName>
      <ShortName>Significant Accounting Policies</ShortName>
      <Role>http://www.solutia.com/role/DisclosureSignificantAccountingPolicies</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R11.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>10401 - Disclosure - Acquisitions, Divestitures and Discontinued Operations</LongName>
      <ShortName>Acquisitions, Divestitures and Discontinued Operations</ShortName>
      <Role>http://www.solutia.com/role/DisclosureAcquisitionsDivestituresAndDiscontinuedOperations</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R12.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>10501 - Disclosure - Restructuring Reserves</LongName>
      <ShortName>Restructuring Reserves</ShortName>
      <Role>http://www.solutia.com/role/DisclosureRestructuringReserves</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R13.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>10601 - Disclosure - Goodwill and Other Intangible Assets</LongName>
      <ShortName>Goodwill and Other Intangible Assets</ShortName>
      <Role>http://www.solutia.com/role/DisclosureGoodwillAndOtherIntangibleAssets</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R14.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>10701 - Disclosure - Detail of Certain Balance Sheet Accounts</LongName>
      <ShortName>Detail of Certain Balance Sheet Accounts</ShortName>
      <Role>http://www.solutia.com/role/DisclosureDetailOfCertainBalanceSheetAccounts</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R15.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>10801 - Disclosure - Income Taxes</LongName>
      <ShortName>Income Taxes</ShortName>
      <Role>http://www.solutia.com/role/DisclosureIncomeTaxes</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R16.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>10901 - Disclosure - Debt Obligations</LongName>
      <ShortName>Debt Obligations</ShortName>
      <Role>http://www.solutia.com/role/DisclosureDebtObligations</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R17.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>11001 - Disclosure - Derivatives and Risk Management</LongName>
      <ShortName>Derivatives and Risk Management</ShortName>
      <Role>http://www.solutia.com/role/DisclosureDerivativesAndRiskManagement</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R18.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>11101 - Disclosure - Financial Instruments and Risk Management</LongName>
      <ShortName>Financial Instruments and Risk Management</ShortName>
      <Role>http://www.solutia.com/role/DisclosureFinancialInstrumentsAndRiskManagement</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R19.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>11201 - Disclosure - Pension Plans and Other Postretirement Benefits</LongName>
      <ShortName>Pension Plans and Other Postretirement Benefits</ShortName>
      <Role>http://www.solutia.com/role/DisclosurePensionPlansAndOtherPostretirementBenefits</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R20.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>11301 - Disclosure - Employee Savings Plans</LongName>
      <ShortName>Employee Savings Plans</ShortName>
      <Role>http://www.solutia.com/role/DisclosureEmployeeSavingsPlans</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R21.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>11401 - Disclosure - Share-Based Compensation</LongName>
      <ShortName>Share-Based Compensation</ShortName>
      <Role>http://www.solutia.com/role/DisclosureShareBasedCompensation</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R22.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>11501 - Disclosure - Shareholders' Equity</LongName>
      <ShortName>Shareholders' Equity</ShortName>
      <Role>http://www.solutia.com/role/DisclosureShareholdersEquity</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R23.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>11601 - Disclosure - Commitments and Contingencies</LongName>
      <ShortName>Commitments and Contingencies</ShortName>
      <Role>http://www.solutia.com/role/DisclosureCommitmentsAndContingencies</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R24.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>11701 - Disclosure - Supplemental Data</LongName>
      <ShortName>Supplemental Data</ShortName>
      <Role>http://www.solutia.com/role/DisclosureSupplementalData</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R25.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>11801 - Disclosure - Segment and Geographic Data</LongName>
      <ShortName>Segment and Geographic Data</ShortName>
      <Role>http://www.solutia.com/role/DisclosureSegmentAndGeographicData</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R26.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>11901 - Disclosure - Earnings (Loss) Per Share</LongName>
      <ShortName>Earnings (Loss) Per Share</ShortName>
      <Role>http://www.solutia.com/role/DisclosureEarningsLossPerShare</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R27.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>12001 - Disclosure - Quarterly Data -- Unaudited</LongName>
      <ShortName>Quarterly Data -- Unaudited</ShortName>
      <Role>http://www.solutia.com/role/DisclosureQuarterlyDataUnaudited</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R28.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>12101 - Disclosure - Condensed Consolidating Financial Statements</LongName>
      <ShortName>Condensed Consolidating Financial Statements</ShortName>
      <Role>http://www.solutia.com/role/DisclosureCondensedConsolidatingFinancialStatements</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R29.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>12201 - Disclosure - Subsequent Events</LongName>
      <ShortName>Subsequent Events</ShortName>
      <Role>http://www.solutia.com/role/DisclosureSubsequentEvents</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R30.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>12301 - Disclosure - VALUATION AND QUALIFYING ACCOUNTS</LongName>
      <ShortName>VALUATION AND QUALIFYING ACCOUNTS</ShortName>
      <Role>http://www.solutia.com/role/DisclosureValuationAndQualifyingAccounts</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R31.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Book</ReportType>
      <LongName>All Reports</LongName>
      <ShortName>All Reports</ShortName>
      <Role />
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName />
    </Report>
  </MyReports>
  <EntityCount>1</EntityCount>
  <ContextCount>68</ContextCount>
  <SegmentCount>9</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <UnitCount>3</UnitCount>
  <ElementCount>167</ElementCount>
  <FootnotesReported>true</FootnotesReported>
  <TuplesReported>false</TuplesReported>
  <ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2010_To_12_31_201033</ContextName>
      <ElementCount>6</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_201025</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20092</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_2_29_20083</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2009_To_12_31_20092</ContextName>
      <ElementCount>2</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_6_30_2010</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2008_To_2_29_20085</ContextName>
      <ElementCount>5</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20086</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_3_1_2008_To_12_31_2008</ContextName>
      <ElementCount>66</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2010_To_12_31_201032</ContextName>
      <ElementCount>2</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_3_1_2008_To_12_31_200823</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_2_29_20085</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2008_To_2_29_200822</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_2_29_200822</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2010_To_12_31_20102</ContextName>
      <ElementCount>66</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2009_To_12_31_200924</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20085</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_201024</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20083</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20072</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_201022</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_2_29_200823</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20074</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20075</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2008_To_2_29_20083</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_3_1_2008_To_12_31_20083</ContextName>
      <ElementCount>4</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_1_31_2008</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20103</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_201023</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2010_To_12_31_2010332</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2008_To_2_29_20084</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_2_29_20082</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_1_31_2011</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2009_To_12_31_2009</ContextName>
      <ElementCount>71</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_2_29_200826</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2009_To_12_31_200923</ContextName>
      <ElementCount>6</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_200722</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20097</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_2_29_20084</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20093</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_2_29_200824</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2010_To_12_31_2010</ContextName>
      <ElementCount>35</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_3_1_2008_To_12_31_200822</ContextName>
      <ElementCount>3</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_2_29_20086</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20073</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2009_To_12_31_200922</ContextName>
      <ElementCount>2</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20076</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20082</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2008_To_2_29_2008</ContextName>
      <ElementCount>63</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20095</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20094</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_2_29_20087</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_2_29_2008</ContextName>
      <ElementCount>5</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_3_31_2008</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_2009</ContextName>
      <ElementCount>36</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20084</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2010_To_12_31_20104</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20102</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_2007</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2008_To_2_29_20082</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_2008</ContextName>
      <ElementCount>2</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2010_To_12_31_20103</ContextName>
      <ElementCount>2</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_3_1_2008_To_12_31_20082</ContextName>
      <ElementCount>2</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>Duration_1_1_2009_To_12_31_20093</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_200723</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_2_29_200825</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_2010</ContextName>
      <ElementCount>36</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>As_Of_12_31_20096</ContextName>
      <ElementCount>1</ElementCount>
    </ContextSummary>
  </ContextSummary>
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
