<?xml version='1.0' encoding='UTF-8'?>
<FilingSummary>
  <Version>3.2.0.727</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>188</ContextCount>
  <ElementCount>214</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>43</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>5</UnitCount>
  <MyReports>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0001000 - Document - Document and Entity Information Document</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/DocumentAndEntityInformationDocument</Role>
      <ShortName>Document and Entity Information Document</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>1001000 - Statement - Condensed Consolidated Balance Sheets (unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/CondensedConsolidatedBalanceSheetsUnaudited</Role>
      <ShortName>Condensed Consolidated Balance Sheets (unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>1001500 - Statement - Condensed Consolidated Balance Sheets Parenthetical</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/CondensedConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>Condensed Consolidated Balance Sheets Parenthetical</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>1002000 - Statement - Condensed Consolidated Statements of Operations (unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/CondensedConsolidatedStatementsOfOperationsUnaudited</Role>
      <ShortName>Condensed Consolidated Statements of Operations (unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>1003000 - Statement - Condensed Consolidated Statements of Comprehensive Income (Loss)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeLoss</Role>
      <ShortName>Condensed Consolidated Statements of Comprehensive Income (Loss)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>1004000 - Statement - Condensed Consolidated Statements of Cash Flows (unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited</Role>
      <ShortName>Condensed Consolidated Statements of Cash Flows (unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>1005000 - Statement - Condensesd Consolidated Statements of Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/CondensesdConsolidatedStatementsOfEquity</Role>
      <ShortName>Condensesd Consolidated Statements of Equity</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>2101100 - Disclosure - Business and Basis of Presenation Level 1 - (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.momentive.com/role/BusinessAndBasisOfPresenationLevel1Notes</Role>
      <ShortName>Business and Basis of Presenation Level 1 - (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>2102100 - Disclosure - Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/SummaryOfSignificantAccountingPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>2113100 - Disclosure - Reorganization Expense (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.momentive.com/role/ReorganizationExpenseNotes</Role>
      <ShortName>Reorganization Expense (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>2114100 - Disclosure - Related Party Transactions Level 1 - (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.momentive.com/role/RelatedPartyTransactionsLevel1Notes</Role>
      <ShortName>Related Party Transactions Level 1 - (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>2115100 - Disclosure - Fair Value Measurements Level 1 - (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.momentive.com/role/FairValueMeasurementsLevel1Notes</Role>
      <ShortName>Fair Value Measurements Level 1 - (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>2116100 - Disclosure - Debt Obligations Level 1 - (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.momentive.com/role/DebtObligationsLevel1Notes</Role>
      <ShortName>Debt Obligations Level 1 - (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>2117100 - Disclosure - Commitments and Contingencies Level 1 - (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.momentive.com/role/CommitmentsAndContingenciesLevel1Notes</Role>
      <ShortName>Commitments and Contingencies Level 1 - (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>2118100 - Disclosure - Equity Plans and Stock Based Compensation Equity Plans and Stock Based Compensation Level 1 (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.momentive.com/role/EquityPlansAndStockBasedCompensationEquityPlansAndStockBasedCompensationLevel1Notes</Role>
      <ShortName>Equity Plans and Stock Based Compensation Equity Plans and Stock Based Compensation Level 1 (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>2121100 - Disclosure - Operating Segments Level 1 - (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.momentive.com/role/OperatingSegmentsLevel1Notes</Role>
      <ShortName>Operating Segments Level 1 - (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>2122100 - Disclosure - Changes in Accumulated Other Comprehensive Income Changes in Accumulated Other Comprehensive Income Level 1 - (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.momentive.com/role/ChangesInAccumulatedOtherComprehensiveIncomeChangesInAccumulatedOtherComprehensiveIncomeLevel1Notes</Role>
      <ShortName>Changes in Accumulated Other Comprehensive Income Changes in Accumulated Other Comprehensive Income Level 1 - (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>2123100 - Disclosure - Income Taxes (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.momentive.com/role/IncomeTaxesNotes</Role>
      <ShortName>Income Taxes (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>2124100 - Disclosure - Loss per Share (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.momentive.com/role/LossPerShareNotes</Role>
      <ShortName>Loss per Share (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>2125100 - Disclosure - Guarantor/Non-Guarantor Subsidiary Financial Informa</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/GuarantorNonGuarantorSubsidiaryFinancialInforma</Role>
      <ShortName>Guarantor/Non-Guarantor Subsidiary Financial Informa</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>2202201 - Disclosure - Summary of Significant Accounting Policies Level 2 - (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/SummaryOfSignificantAccountingPoliciesLevel2Policies</Role>
      <ShortName>Summary of Significant Accounting Policies Level 2 - (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.momentive.com/role/SummaryOfSignificantAccountingPolicies</ParentRole>
      <Position>21</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>2315301 - Disclosure - Fair Value Measurements Fair Value Measurements Level 3 - (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/FairValueMeasurementsFairValueMeasurementsLevel3Tables</Role>
      <ShortName>Fair Value Measurements Fair Value Measurements Level 3 - (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>2316301 - Disclosure - Debt Obligations Debt Obligations Level 3 - (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/DebtObligationsDebtObligationsLevel3Tables</Role>
      <ShortName>Debt Obligations Debt Obligations Level 3 - (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>2318301 - Disclosure - Equity Plans and Stock Based Compensation Equity Plans and Stock Basesd Compensation Level 3 - (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/EquityPlansAndStockBasedCompensationEquityPlansAndStockBasesdCompensationLevel3Tables</Role>
      <ShortName>Equity Plans and Stock Based Compensation Equity Plans and Stock Basesd Compensation Level 3 - (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>2319300 - Disclosure - Pension Plans and Other Postretirement Benefits Pension Plans and Other Postretirement Benefits Level 3 - (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/PensionPlansAndOtherPostretirementBenefitsPensionPlansAndOtherPostretirementBenefitsLevel3Tables</Role>
      <ShortName>Pension Plans and Other Postretirement Benefits Pension Plans and Other Postretirement Benefits Level 3 - (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>2321301 - Disclosure - Operating Segments Level 3 - (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/OperatingSegmentsLevel3Tables</Role>
      <ShortName>Operating Segments Level 3 - (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.momentive.com/role/OperatingSegmentsLevel1Notes</ParentRole>
      <Position>26</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>2322301 - Disclosure - Changes in Accumulated Other Comprehensive Income Changes in Accumulated Other Comprehensive Income Level 3 - (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/ChangesInAccumulatedOtherComprehensiveIncomeChangesInAccumulatedOtherComprehensiveIncomeLevel3Tables</Role>
      <ShortName>Changes in Accumulated Other Comprehensive Income Changes in Accumulated Other Comprehensive Income Level 3 - (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.momentive.com/role/ChangesInAccumulatedOtherComprehensiveIncomeChangesInAccumulatedOtherComprehensiveIncomeLevel1Notes</ParentRole>
      <Position>27</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>2324301 - Disclosure - Loss per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/LossPerShareTables</Role>
      <ShortName>Loss per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.momentive.com/role/LossPerShareNotes</ParentRole>
      <Position>28</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>2325301 - Disclosure - Guarantor/Non-Guarantor Subsidiary Financial Informa GuarantorNonguarantor Subsidiary Level 3 - (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/GuarantorNonGuarantorSubsidiaryFinancialInformaGuarantornonguarantorSubsidiaryLevel3Tables</Role>
      <ShortName>Guarantor/Non-Guarantor Subsidiary Financial Informa GuarantorNonguarantor Subsidiary Level 3 - (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>2401401 - Disclosure - Business and Basis of Presentation Business and Basis of Presentation Level 4 - (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/BusinessAndBasisOfPresentationBusinessAndBasisOfPresentationLevel4Details</Role>
      <ShortName>Business and Basis of Presentation Business and Basis of Presentation Level 4 - (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>2414401 - Disclosure - Related Party Transactions Level 4 - (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/RelatedPartyTransactionsLevel4Details</Role>
      <ShortName>Related Party Transactions Level 4 - (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.momentive.com/role/RelatedPartyTransactionsLevel1Notes</ParentRole>
      <Position>31</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>2415402 - Disclosure - Fair Value Measurements Level 4 - (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/FairValueMeasurementsLevel4Details</Role>
      <ShortName>Fair Value Measurements Level 4 - (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.momentive.com/role/FairValueMeasurementsLevel1Notes</ParentRole>
      <Position>32</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>2416402 - Disclosure - Debt Obligations Level 4 - (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/DebtObligationsLevel4Details</Role>
      <ShortName>Debt Obligations Level 4 - (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.momentive.com/role/DebtObligationsLevel1Notes</ParentRole>
      <Position>33</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>2417401 - Disclosure - Commitments and Contingencies Level 4 - (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/CommitmentsAndContingenciesLevel4Details</Role>
      <ShortName>Commitments and Contingencies Level 4 - (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.momentive.com/role/CommitmentsAndContingenciesLevel1Notes</ParentRole>
      <Position>34</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>2418402 - Disclosure - Equity Plans and Stock Based Compensation Equity Plans and Stock Based Compensation Level 4 - (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/EquityPlansAndStockBasedCompensationEquityPlansAndStockBasedCompensationLevel4Details</Role>
      <ShortName>Equity Plans and Stock Based Compensation Equity Plans and Stock Based Compensation Level 4 - (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.momentive.com/role/EquityPlansAndStockBasedCompensationEquityPlansAndStockBasedCompensationLevel1Notes</ParentRole>
      <Position>35</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>2418403 - Disclosure - Equity Plans and Stock Based Compensation Summary of Stock Based Compensation Award Terms (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/EquityPlansAndStockBasedCompensationSummaryOfStockBasedCompensationAwardTermsDetails</Role>
      <ShortName>Equity Plans and Stock Based Compensation Summary of Stock Based Compensation Award Terms (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>2418404 - Disclosure - Equity Plans and Stock Based Compensation Stock Option Monte Carlo Model Assumptions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/EquityPlansAndStockBasedCompensationStockOptionMonteCarloModelAssumptionsDetails</Role>
      <ShortName>Equity Plans and Stock Based Compensation Stock Option Monte Carlo Model Assumptions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>2419401 - Disclosure - Pension Plans and Other Postretirement Benefits Level 4 - (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/PensionPlansAndOtherPostretirementBenefitsLevel4Details</Role>
      <ShortName>Pension Plans and Other Postretirement Benefits Level 4 - (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.momentive.com/role/PensionPlansAndOtherPostretirementBenefitsPensionPlansAndOtherPostretirementBenefitsLevel3Tables</ParentRole>
      <Position>38</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>2421402 - Disclosure - Operating Segments Operating Segments Level 4 - (Details) - Revenue by Segment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/OperatingSegmentsOperatingSegmentsLevel4DetailsRevenueBySegmentDetails</Role>
      <ShortName>Operating Segments Operating Segments Level 4 - (Details) - Revenue by Segment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>2421403 - Disclosure - Operating Segments Operating Segments Level 4 - (Details) - EBITDA by Segment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/OperatingSegmentsOperatingSegmentsLevel4DetailsEbitdaBySegmentDetails</Role>
      <ShortName>Operating Segments Operating Segments Level 4 - (Details) - EBITDA by Segment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>2421404 - Disclosure - Operating Segments Operating Segments Level 4 - (Details) - Reconciliation of Segment EBITDA to Net Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/OperatingSegmentsOperatingSegmentsLevel4DetailsReconciliationOfSegmentEbitdaToNetIncome</Role>
      <ShortName>Operating Segments Operating Segments Level 4 - (Details) - Reconciliation of Segment EBITDA to Net Income</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>2422402 - Disclosure - Changes in Accumulated Other Comprehensive Income Changes in Accumulated Other Comprehensive Income Level 4 - (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/ChangesInAccumulatedOtherComprehensiveIncomeChangesInAccumulatedOtherComprehensiveIncomeLevel4Details</Role>
      <ShortName>Changes in Accumulated Other Comprehensive Income Changes in Accumulated Other Comprehensive Income Level 4 - (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.momentive.com/role/ChangesInAccumulatedOtherComprehensiveIncomeChangesInAccumulatedOtherComprehensiveIncomeLevel3Tables</ParentRole>
      <Position>42</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>2423401 - Disclosure - Income Taxes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/IncomeTaxesDetails</Role>
      <ShortName>Income Taxes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.momentive.com/role/IncomeTaxesNotes</ParentRole>
      <Position>43</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>2425402 - Disclosure - GuarantorNonguarantor Subsidiary Level 4 - (Details) - Intro paragraph</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/GuarantornonguarantorSubsidiaryLevel4DetailsIntroParagraph</Role>
      <ShortName>GuarantorNonguarantor Subsidiary Level 4 - (Details) - Intro paragraph</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>2425403 - Disclosure - Guarantor/Non-Guarantor Subsidiary Financial Informa GuarantorNonguarantor Subsidiary Level 4 - (Details) - Balance Sheet</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/GuarantorNonGuarantorSubsidiaryFinancialInformaGuarantornonguarantorSubsidiaryLevel4DetailsBalanceSheet</Role>
      <ShortName>Guarantor/Non-Guarantor Subsidiary Financial Informa GuarantorNonguarantor Subsidiary Level 4 - (Details) - Balance Sheet</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.momentive.com/role/GuarantorNonGuarantorSubsidiaryFinancialInformaGuarantornonguarantorSubsidiaryLevel3Tables</ParentRole>
      <Position>45</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>2425404 - Disclosure - Guarantor/Non-Guarantor Subsidiary Financial Informa GuarantorNonguarantor Subsidiary Level 4 - (Details) - Statement of Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/GuarantorNonGuarantorSubsidiaryFinancialInformaGuarantornonguarantorSubsidiaryLevel4DetailsStatementOfOperations</Role>
      <ShortName>Guarantor/Non-Guarantor Subsidiary Financial Informa GuarantorNonguarantor Subsidiary Level 4 - (Details) - Statement of Operations</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.momentive.com/role/GuarantorNonGuarantorSubsidiaryFinancialInformaGuarantornonguarantorSubsidiaryLevel3Tables</ParentRole>
      <Position>46</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>2425405 - Disclosure - Guarantor/Non-Guarantor Subsidiary Financial Informa GuarantorNonguarantor Subsidiary Level 4 - (Details) - Statement of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.momentive.com/role/GuarantorNonGuarantorSubsidiaryFinancialInformaGuarantornonguarantorSubsidiaryLevel4DetailsStatementOfCashFlows</Role>
      <ShortName>Guarantor/Non-Guarantor Subsidiary Financial Informa GuarantorNonguarantor Subsidiary Level 4 - (Details) - Statement of Cash Flows</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.momentive.com/role/GuarantorNonGuarantorSubsidiaryFinancialInformaGuarantornonguarantorSubsidiaryLevel3Tables</ParentRole>
      <Position>47</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9999.htm</HtmlFileName>
      <LongName>Uncategorized Items - mpmi-20150630.xml</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/role/uncategorizedFacts</Role>
      <ShortName>Uncategorized Items - mpmi-20150630.xml</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>48</Position>
    </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">In ''Condensed Consolidated Statements of Cash Flows (unaudited)'', column(s) 1, 2 are contained in other reports, so were removed by flow through suppression.</Log>
    <Log type="Warn">In ''Condensed Consolidated Balance Sheets (unaudited)'', fact us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax with value -28000000 and preferred label periodEndLabel, was not shown because there are no facts in a duration ending at 2014-12-31. Change the preferred label role or add facts.</Log>
    <Log type="Warn">In ''Condensed Consolidated Balance Sheets (unaudited)'', fact us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax with value -67000000 and preferred label periodEndLabel, was not shown because there are no facts in a duration ending at 2015-06-30. Change the preferred label role or add facts.</Log>
  </Logs>
  <InputFiles>
    <File>mpmi-20150630.xml</File>
    <File>mpmi-20150630_cal.xml</File>
    <File>mpmi-20150630_def.xml</File>
    <File>mpmi-20150630_lab.xml</File>
    <File>mpmi-20150630_pre.xml</File>
    <File>mpmi-20150630.xsd</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies/>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>

