<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.21.2</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>137</ContextCount>
  <ElementCount>274</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>45</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>7</UnitCount>
  <MyReports>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00090 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>00100 - Statement - CONDENSED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/StatementCondensedBalanceSheets</Role>
      <ShortName>CONDENSED BALANCE SHEETS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>00105 - Statement - CONDENSED BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/StatementCondensedBalanceSheetsParenthetical</Role>
      <ShortName>CONDENSED BALANCE SHEETS (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>00200 - Statement - UNAUDITED CONDENSED STATEMENT OF OPERATIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/StatementUnauditedCondensedStatementOfOperations</Role>
      <ShortName>UNAUDITED CONDENSED STATEMENT OF OPERATIONS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>00300 - Statement - UNAUDITED CONDENSED STATEMENT OF CHANGES IN SHAREHOLDERS' DEFICIT</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/StatementUnauditedCondensedStatementOfChangesInShareholdersDeficit</Role>
      <ShortName>UNAUDITED CONDENSED STATEMENT OF CHANGES IN SHAREHOLDERS' DEFICIT</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>00400 - Statement - UNAUDITED CONDENSED STATEMENT OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/StatementUnauditedCondensedStatementOfCashFlows</Role>
      <ShortName>UNAUDITED CONDENSED STATEMENT OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>10101 - Disclosure - Description of Organization and Business Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureDescriptionOfOrganizationAndBusinessOperations</Role>
      <ShortName>Description of Organization and Business Operations</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>10201 - Disclosure - Restatement of Previously Issued Financial Statements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureRestatementOfPreviouslyIssuedFinancialStatements</Role>
      <ShortName>Restatement of Previously Issued Financial Statements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>10301 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPolicies</Role>
      <ShortName>Basis of Presentation and Summary of Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>10401 - Disclosure - Initial Public Offering</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureInitialPublicOffering</Role>
      <ShortName>Initial Public Offering</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>10501 - Disclosure - Private Placement</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosurePrivatePlacement</Role>
      <ShortName>Private Placement</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>10601 - Disclosure - Related Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureRelatedPartyTransactions</Role>
      <ShortName>Related Party Transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>10701 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureCommitmentsAndContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>10801 - Disclosure - Derivative Liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureDerivativeLiabilities</Role>
      <ShortName>Derivative Liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>10901 - Disclosure - Shareholders' Deficit</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureShareholdersDeficit</Role>
      <ShortName>Shareholders' Deficit</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>11001 - Disclosure - Fair Value Measurements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureFairValueMeasurements</Role>
      <ShortName>Fair Value Measurements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>11101 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureSubsequentEvents</Role>
      <ShortName>Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>20302 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Basis of Presentation and Summary of Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.motivecapitalcorp.com/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPolicies</ParentRole>
      <Position>18</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>30203 - Disclosure - Restatement of Previously Issued Financial Statements (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureRestatementOfPreviouslyIssuedFinancialStatementsTables</Role>
      <ShortName>Restatement of Previously Issued Financial Statements (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.motivecapitalcorp.com/role/DisclosureRestatementOfPreviouslyIssuedFinancialStatements</ParentRole>
      <Position>19</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>31003 - Disclosure - Fair Value Measurements (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureFairValueMeasurementsTables</Role>
      <ShortName>Fair Value Measurements (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.motivecapitalcorp.com/role/DisclosureFairValueMeasurements</ParentRole>
      <Position>20</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>40101 - Disclosure - Description of Organization and Business Operations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureDescriptionOfOrganizationAndBusinessOperationsDetails</Role>
      <ShortName>Description of Organization and Business Operations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.motivecapitalcorp.com/role/DisclosureDescriptionOfOrganizationAndBusinessOperations</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>40201 - Disclosure - Restatement of Previously Issued Financial Statements - Balance sheet (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureRestatementOfPreviouslyIssuedFinancialStatementsBalanceSheetDetails</Role>
      <ShortName>Restatement of Previously Issued Financial Statements - Balance sheet (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>40202 - Disclosure - Restatement of Previously Issued Financial Statements - Cash flows (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureRestatementOfPreviouslyIssuedFinancialStatementsCashFlowsDetails</Role>
      <ShortName>Restatement of Previously Issued Financial Statements - Cash flows (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.motivecapitalcorp.com/role/DisclosureRestatementOfPreviouslyIssuedFinancialStatementsTables</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>40203 - Disclosure - Restatement of Previously Issued Financial Statements - Basic and diluted earnings per share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureRestatementOfPreviouslyIssuedFinancialStatementsBasicAndDilutedEarningsPerShareDetails</Role>
      <ShortName>Restatement of Previously Issued Financial Statements - Basic and diluted earnings per share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>40204 - Disclosure - Restatement of Previously Issued Financial Statements - Class A Ordinary Shares Subject to Possible Redemption (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureRestatementOfPreviouslyIssuedFinancialStatementsClassOrdinarySharesSubjectToPossibleRedemptionDetails</Role>
      <ShortName>Restatement of Previously Issued Financial Statements - Class A Ordinary Shares Subject to Possible Redemption (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>40301 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesDetails</Role>
      <ShortName>Basis of Presentation and Summary of Significant Accounting Policies (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.motivecapitalcorp.com/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>40302 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Impact of restatement (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesImpactOfRestatementDetails</Role>
      <ShortName>Basis of Presentation and Summary of Significant Accounting Policies - Impact of restatement (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>40401 - Disclosure - Initial Public Offering (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureInitialPublicOfferingDetails</Role>
      <ShortName>Initial Public Offering (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.motivecapitalcorp.com/role/DisclosureInitialPublicOffering</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>40501 - Disclosure - Private Placement (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosurePrivatePlacementDetails</Role>
      <ShortName>Private Placement (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.motivecapitalcorp.com/role/DisclosurePrivatePlacement</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>40601 - Disclosure - Related Party Transactions - Founder Shares (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureRelatedPartyTransactionsFounderSharesDetails</Role>
      <ShortName>Related Party Transactions - Founder Shares (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>40602 - Disclosure - Related Party Transactions - Related Party Loans, Promissory Note, Administrative Support Agreement (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureRelatedPartyTransactionsRelatedPartyLoansPromissoryNoteAdministrativeSupportAgreementDetails</Role>
      <ShortName>Related Party Transactions - Related Party Loans, Promissory Note, Administrative Support Agreement (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>40701 - Disclosure - Commitments and Contingencies (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureCommitmentsAndContingenciesDetails</Role>
      <ShortName>Commitments and Contingencies (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.motivecapitalcorp.com/role/DisclosureCommitmentsAndContingencies</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>40801 - Disclosure - Derivative Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureDerivativeLiabilitiesDetails</Role>
      <ShortName>Derivative Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.motivecapitalcorp.com/role/DisclosureDerivativeLiabilities</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>40802 - Disclosure - Derivative Liabilities - Redemption of warrants (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureDerivativeLiabilitiesRedemptionOfWarrantsDetails</Role>
      <ShortName>Derivative Liabilities - Redemption of warrants (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>40803 - Disclosure - Derivative Liabilities - Forward Purchase Agreement (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureDerivativeLiabilitiesForwardPurchaseAgreementDetails</Role>
      <ShortName>Derivative Liabilities - Forward Purchase Agreement (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>40901 - Disclosure - Shareholders' Deficit - Preferred Stock Shares (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureShareholdersDeficitPreferredStockSharesDetails</Role>
      <ShortName>Shareholders' Deficit - Preferred Stock Shares (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>40902 - Disclosure - Shareholders' Deficit - Common Stock Shares (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureShareholdersDeficitCommonStockSharesDetails</Role>
      <ShortName>Shareholders' Deficit - Common Stock Shares (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>41001 - Disclosure - Fair Value Measurements - Reconciliation of derivative liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureFairValueMeasurementsReconciliationOfDerivativeLiabilitiesDetails</Role>
      <ShortName>Fair Value Measurements - Reconciliation of derivative liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>41002 - Disclosure - Fair Value Measurements - Financial assets and liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureFairValueMeasurementsFinancialAssetsAndLiabilitiesDetails</Role>
      <ShortName>Fair Value Measurements - Financial assets and liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>41003 - Disclosure - Fair Value Measurements - Level 3 Fair Value Measurements Inputs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureFairValueMeasurementsLevel3FairValueMeasurementsInputsDetails</Role>
      <ShortName>Fair Value Measurements - Level 3 Fair Value Measurements Inputs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>41004 - Disclosure - Fair Value Measurements - Change in the Fair Value of the Warrant Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureFairValueMeasurementsChangeInFairValueOfWarrantLiabilitiesDetails</Role>
      <ShortName>Fair Value Measurements - Change in the Fair Value of the Warrant Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>41005 - Disclosure - Fair Value Measurements - Additional information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureFairValueMeasurementsAdditionalInformationDetails</Role>
      <ShortName>Fair Value Measurements - Additional information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="motv-20210331x10qa.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>41101 - Disclosure - Subsequent Events (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.motivecapitalcorp.com/role/DisclosureSubsequentEventsDetails</Role>
      <ShortName>Subsequent Events (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.motivecapitalcorp.com/role/DisclosureSubsequentEvents</ParentRole>
      <Position>43</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="10-Q/A" original="motv-20210331x10qa.htm">motv-20210331x10qa.htm</File>
    <File>motv-20210331.xsd</File>
    <File>motv-20210331_cal.xml</File>
    <File>motv-20210331_def.xml</File>
    <File>motv-20210331_lab.xml</File>
    <File>motv-20210331_pre.xml</File>
    <File>motv-20210331xex31d1.htm</File>
    <File>motv-20210331xex31d2.htm</File>
    <File>motv-20210331xex32d1.htm</File>
    <File>motv-20210331xex32d2.htm</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2020-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://fasb.org/srt/2020-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://fasb.org/us-gaap/2020-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
