<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.24.0.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>398</ContextCount>
  <ElementCount>578</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>96</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>8</UnitCount>
  <MyReports>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0000001 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/DocumentandEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>0000002 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF OPERATIONS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>0000003 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS CONSOLIDATED STATEMENTS OF OPERATIONS (PARENTHETICAL)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSCONSOLIDATEDSTATEMENTSOFOPERATIONSPARENTHETICAL</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF OPERATIONS CONSOLIDATED STATEMENTS OF OPERATIONS (PARENTHETICAL)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>0000004 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>0000005 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEParenthetical</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>0000006 - Statement - CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CONSOLIDATEDBALANCESHEETS</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>0000007 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CONSOLIDATEDBALANCESHEETSParenthetical</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>0000008 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>0000009 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS CONSOLIDATED STATEMENTS OF CASH FLOWS (PARENTHETICAL)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWSCONSOLIDATEDSTATEMENTSOFCASHFLOWSPARENTHETICAL</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS CONSOLIDATED STATEMENTS OF CASH FLOWS (PARENTHETICAL)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>0000010 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDER'S EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSHAREHOLDERSEQUITY</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDER'S EQUITY</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>0000011 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDER'S EQUITY (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSHAREHOLDERSEQUITYParenthetical</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDER'S EQUITY (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>0000012 - Disclosure - Description of Business, Basis of Presentation and Summary of Significant Accounting Policies (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/DescriptionofBusinessBasisofPresentationandSummaryofSignificantAccountingPoliciesNotes</Role>
      <ShortName>Description of Business, Basis of Presentation and Summary of Significant Accounting Policies (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>0000013 - Disclosure - Recent Accounting Pronouncements (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/RecentAccountingPronouncementsNotes</Role>
      <ShortName>Recent Accounting Pronouncements (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>0000014 - Disclosure - Segment Information (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/SegmentInformationNotes</Role>
      <ShortName>Segment Information (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>0000015 - Disclosure - Revenue (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/RevenueNotes</Role>
      <ShortName>Revenue (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>0000016 - Disclosure - Restructuring Actions (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/RestructuringActionsNotes</Role>
      <ShortName>Restructuring Actions (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>0000017 - Disclosure - Income Taxes (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/IncomeTaxesNotes</Role>
      <ShortName>Income Taxes (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>0000018 - Disclosure - Earnings Per Share (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/EarningsPerShareNotes</Role>
      <ShortName>Earnings Per Share (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>0000019 - Disclosure - Receivables, Net (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/ReceivablesNetNotes</Role>
      <ShortName>Receivables, Net (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>0000020 - Disclosure - Inventories (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/InventoriesNotes</Role>
      <ShortName>Inventories (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>0000021 - Disclosure - Other Current and Non-Current Assets (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/OtherCurrentandNonCurrentAssetsNotes</Role>
      <ShortName>Other Current and Non-Current Assets (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>0000022 - Disclosure - Plant, Property and Equipment, Net (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/PlantPropertyandEquipmentNetNotes</Role>
      <ShortName>Plant, Property and Equipment, Net (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>0000023 - Disclosure - Goodwill and Other Intangible Assets, Net (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/GoodwillandOtherIntangibleAssetsNetNotes</Role>
      <ShortName>Goodwill and Other Intangible Assets, Net (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>0000024 - Disclosure - Accrued Liabilities and Other Non-Current Liabilities (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/AccruedLiabilitiesandOtherNonCurrentLiabilitiesNotes</Role>
      <ShortName>Accrued Liabilities and Other Non-Current Liabilities (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>0000025 - Disclosure - Leases (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/LeasesNotes</Role>
      <ShortName>Leases (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>0000026 - Disclosure - Debt (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/DebtNotes</Role>
      <ShortName>Debt (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>0000027 - Disclosure - Postretirement Benefit Plans (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/PostretirementBenefitPlansNotes</Role>
      <ShortName>Postretirement Benefit Plans (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>0000028 - Disclosure - Long-Term Incentive Employee Compensation (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/LongTermIncentiveEmployeeCompensationNotes</Role>
      <ShortName>Long-Term Incentive Employee Compensation (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>0000029 - Disclosure - Capital Stock (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/CapitalStockNotes</Role>
      <ShortName>Capital Stock (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>0000030 - Disclosure - Commitments and Contingencies (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/CommitmentsandContingenciesNotes</Role>
      <ShortName>Commitments and Contingencies (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>0000031 - Disclosure - Guarantees, Indemnities and Warranties (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/GuaranteesIndemnitiesandWarrantiesNotes</Role>
      <ShortName>Guarantees, Indemnities and Warranties (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>0000032 - Disclosure - Derivative Instruments and Hedging Activities (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/DerivativeInstrumentsandHedgingActivitiesNotes</Role>
      <ShortName>Derivative Instruments and Hedging Activities (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>0000033 - Disclosure - Acquisitions Acquisitions (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.itt.com/role/AcquisitionsAcquisitionsNotes</Role>
      <ShortName>Acquisitions Acquisitions (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>9954471 - Disclosure - Description of Business, Basis of Presentation and Summary of Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/DescriptionofBusinessBasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Description of Business, Basis of Presentation and Summary of Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.itt.com/role/DescriptionofBusinessBasisofPresentationandSummaryofSignificantAccountingPoliciesNotes</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>9954472 - Disclosure - Recent Accounting Prouncements (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/RecentAccountingProuncementsPolicies</Role>
      <ShortName>Recent Accounting Prouncements (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.itt.com/role/DescriptionofBusinessBasisofPresentationandSummaryofSignificantAccountingPoliciesNotes</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>9954473 - Disclosure - Segment Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/SegmentInformationTables</Role>
      <ShortName>Segment Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/SegmentInformationNotes</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>9954474 - Disclosure - Revenue (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/RevenueTables</Role>
      <ShortName>Revenue (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/RevenueNotes</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>9954475 - Disclosure - Restructuring Actions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/RestructuringActionsTables</Role>
      <ShortName>Restructuring Actions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/RestructuringActionsNotes</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>9954476 - Disclosure - Income Taxes (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/IncomeTaxesTables</Role>
      <ShortName>Income Taxes (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/IncomeTaxesNotes</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>9954477 - Disclosure - Earnings Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/EarningsPerShareTables</Role>
      <ShortName>Earnings Per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/EarningsPerShareNotes</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>9954478 - Disclosure - Receivables, Net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/ReceivablesNetTables</Role>
      <ShortName>Receivables, Net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/ReceivablesNetNotes</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>9954479 - Disclosure - Inventories (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/InventoriesTables</Role>
      <ShortName>Inventories (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/InventoriesNotes</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>9954480 - Disclosure - Other Current and Non-Current Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/OtherCurrentandNonCurrentAssetsTables</Role>
      <ShortName>Other Current and Non-Current Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/OtherCurrentandNonCurrentAssetsNotes</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>9954481 - Disclosure - Plant, Property and Equipment, Net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/PlantPropertyandEquipmentNetTables</Role>
      <ShortName>Plant, Property and Equipment, Net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/PlantPropertyandEquipmentNetNotes</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>9954482 - Disclosure - Goodwill and Other Intangible Assets, Net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/GoodwillandOtherIntangibleAssetsNetTables</Role>
      <ShortName>Goodwill and Other Intangible Assets, Net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/GoodwillandOtherIntangibleAssetsNetNotes</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>9954483 - Disclosure - Accrued Liabilities and Other Non-Current Liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/AccruedLiabilitiesandOtherNonCurrentLiabilitiesTables</Role>
      <ShortName>Accrued Liabilities and Other Non-Current Liabilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/AccruedLiabilitiesandOtherNonCurrentLiabilitiesNotes</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>9954484 - Disclosure - Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/LeasesTables</Role>
      <ShortName>Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/LeasesNotes</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>9954485 - Disclosure - Debt (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/DebtTables</Role>
      <ShortName>Debt (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/DebtNotes</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>9954486 - Disclosure - Postretirement Benefit Plans (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/PostretirementBenefitPlansTables</Role>
      <ShortName>Postretirement Benefit Plans (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/PostretirementBenefitPlansNotes</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>9954487 - Disclosure - Long-Term Incentive Employee Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/LongTermIncentiveEmployeeCompensationTables</Role>
      <ShortName>Long-Term Incentive Employee Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/LongTermIncentiveEmployeeCompensationNotes</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>9954488 - Disclosure - Commitments and Contingencies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CommitmentsandContingenciesTables</Role>
      <ShortName>Commitments and Contingencies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/CommitmentsandContingenciesNotes</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>9954489 - Disclosure - Guarantees, Indemnities and Warranties (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/GuaranteesIndemnitiesandWarrantiesTables</Role>
      <ShortName>Guarantees, Indemnities and Warranties (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/GuaranteesIndemnitiesandWarrantiesNotes</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>9954490 - Disclosure - Derivative Instruments and Hedging Activities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/DerivativeInstrumentsandHedgingActivitiesTables</Role>
      <ShortName>Derivative Instruments and Hedging Activities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/DerivativeInstrumentsandHedgingActivitiesNotes</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>9954491 - Disclosure - Acquisitions Acquisitions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/AcquisitionsAcquisitionsTables</Role>
      <ShortName>Acquisitions Acquisitions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.itt.com/role/AcquisitionsAcquisitionsNotes</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>9954492 - Disclosure - Description of Business, Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/DescriptionofBusinessBasisofPresentationandSummaryofSignificantAccountingPoliciesAdditionalInformationDetails</Role>
      <ShortName>Description of Business, Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>9954493 - Disclosure - Segment Reporting - Assets, Capital Expenditures, and Depreciation and Amortization (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/SegmentReportingAssetsCapitalExpendituresandDepreciationandAmortizationDetails</Role>
      <ShortName>Segment Reporting - Assets, Capital Expenditures, and Depreciation and Amortization (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>9954494 - Disclosure - Segment Reporting - Revenue by Region (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/SegmentReportingRevenuebyRegionDetails</Role>
      <ShortName>Segment Reporting - Revenue by Region (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>9954495 - Disclosure - Segment Reporting - Plant, Property and Equipment by Region (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/SegmentReportingPlantPropertyandEquipmentbyRegionDetails</Role>
      <ShortName>Segment Reporting - Plant, Property and Equipment by Region (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>9954496 - Disclosure - Segment Information - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/SegmentInformationAdditionalInformationDetails</Role>
      <ShortName>Segment Information - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>9954497 - Disclosure - Segment Information - Operating Income (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/SegmentInformationOperatingIncomeDetails</Role>
      <ShortName>Segment Information - Operating Income (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>9954498 - Disclosure - Segment Information - Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/SegmentInformationRevenueDetails</Role>
      <ShortName>Segment Information - Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>9954499 - Disclosure - Segment Information - Operating Margin (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/SegmentInformationOperatingMarginDetails</Role>
      <ShortName>Segment Information - Operating Margin (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>9954500 - Disclosure - Revenue - Disaggregated by Product Type and Segment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/RevenueDisaggregatedbyProductTypeandSegmentDetails</Role>
      <ShortName>Revenue - Disaggregated by Product Type and Segment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>9954501 - Disclosure - Revenue Revenue - Contract Assets and Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/RevenueRevenueContractAssetsandLiabilitiesDetails</Role>
      <ShortName>Revenue Revenue - Contract Assets and Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>9954502 - Disclosure - Revenue - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/RevenueAdditionalInformationDetails</Role>
      <ShortName>Revenue - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>9954503 - Disclosure - Restructuring - Costs by Type and Segment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/RestructuringCostsbyTypeandSegmentDetails</Role>
      <ShortName>Restructuring - Costs by Type and Segment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>9954504 - Disclosure - Restructuring - Restructuring Liability Rollforward (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/RestructuringRestructuringLiabilityRollforwardDetails</Role>
      <ShortName>Restructuring - Restructuring Liability Rollforward (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>9954505 - Disclosure - Restructuring - 2020 Global Restructuring Plan Rollforward (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/Restructuring2020GlobalRestructuringPlanRollforwardDetails</Role>
      <ShortName>Restructuring - 2020 Global Restructuring Plan Rollforward (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>9954507 - Disclosure - Income Taxes - Income Tax Data from Continuing Operations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/IncomeTaxesIncomeTaxDatafromContinuingOperationsDetails</Role>
      <ShortName>Income Taxes - Income Tax Data from Continuing Operations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>9954508 - Disclosure - Income Taxes - Effective Tax Rate Reconciliation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/IncomeTaxesEffectiveTaxRateReconciliationDetails</Role>
      <ShortName>Income Taxes - Effective Tax Rate Reconciliation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>9954509 - Disclosure - Income Taxes - Components of Deferred Tax Assets and Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/IncomeTaxesComponentsofDeferredTaxAssetsandLiabilitiesDetails</Role>
      <ShortName>Income Taxes - Components of Deferred Tax Assets and Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>9954510 - Disclosure - Income Taxes - Deferred Taxes Presentation in Balance Sheet (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/IncomeTaxesDeferredTaxesPresentationinBalanceSheetDetails</Role>
      <ShortName>Income Taxes - Deferred Taxes Presentation in Balance Sheet (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>9954511 - Disclosure - Income Taxes - Rollforward of Deferred Tax Assets Valuation Allowance (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/IncomeTaxesRollforwardofDeferredTaxAssetsValuationAllowanceDetails</Role>
      <ShortName>Income Taxes - Rollforward of Deferred Tax Assets Valuation Allowance (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>9954512 - Disclosure - Income Taxes - Attributes Available for Utilization (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/IncomeTaxesAttributesAvailableforUtilizationDetails</Role>
      <ShortName>Income Taxes - Attributes Available for Utilization (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>9954513 - Disclosure - Income Taxes - Rollforward of Unrecognized Tax Benefits (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/IncomeTaxesRollforwardofUnrecognizedTaxBenefitsDetails</Role>
      <ShortName>Income Taxes - Rollforward of Unrecognized Tax Benefits (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>9954514 - Disclosure - Income Taxes - Open Tax Years by Jurisdiction (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/IncomeTaxesOpenTaxYearsbyJurisdictionDetails</Role>
      <ShortName>Income Taxes - Open Tax Years by Jurisdiction (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>9954515 - Disclosure - Income Taxes - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/IncomeTaxesAdditionalInformationDetails</Role>
      <ShortName>Income Taxes - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>9954516 - Disclosure - Earnings Per Share - Basic and Diluted Loss Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/EarningsPerShareBasicandDilutedLossPerShareDetails</Role>
      <ShortName>Earnings Per Share - Basic and Diluted Loss Per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>9954517 - Disclosure - Earnings Per Share - Antidilutive Shares (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/EarningsPerShareAntidilutiveSharesDetails</Role>
      <ShortName>Earnings Per Share - Antidilutive Shares (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>9954518 - Disclosure - Receivables - Component Details (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/ReceivablesComponentDetailsDetails</Role>
      <ShortName>Receivables - Component Details (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>9954519 - Disclosure - Receivables - Allowance for Credit Losses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/ReceivablesAllowanceforCreditLossesDetails</Role>
      <ShortName>Receivables - Allowance for Credit Losses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>81</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>9954520 - Disclosure - Receivables - Rollforward of Allowance for Credit Losses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/ReceivablesRollforwardofAllowanceforCreditLossesDetails</Role>
      <ShortName>Receivables - Rollforward of Allowance for Credit Losses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>82</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>9954521 - Disclosure - Receivables - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/ReceivablesAdditionalInformationDetails</Role>
      <ShortName>Receivables - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>83</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>9954522 - Disclosure - Inventories - Component Details (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/InventoriesComponentDetailsDetails</Role>
      <ShortName>Inventories - Component Details (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>84</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>9954523 - Disclosure - Inventories - Government Assistance (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/InventoriesGovernmentAssistanceDetails</Role>
      <ShortName>Inventories - Government Assistance (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>85</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>9954524 - Disclosure - Inventories - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/InventoriesAdditionalInformationDetails</Role>
      <ShortName>Inventories - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>86</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>9954525 - Disclosure - Other Current and Non-Current Assets - Component Details (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/OtherCurrentandNonCurrentAssetsComponentDetailsDetails</Role>
      <ShortName>Other Current and Non-Current Assets - Component Details (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>87</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>9954527 - Disclosure - Plant, Property and Equipment - PPE by Type (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/PlantPropertyandEquipmentPPEbyTypeDetails</Role>
      <ShortName>Plant, Property and Equipment - PPE by Type (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>88</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>9954528 - Disclosure - Plant, Property and Equipment - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/PlantPropertyandEquipmentAdditionalInformationDetails</Role>
      <ShortName>Plant, Property and Equipment - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>89</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>9954529 - Disclosure - Goodwill and Other Intangible Assets, Net - Changes in Carrying Amount of Goodwill (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/GoodwillandOtherIntangibleAssetsNetChangesinCarryingAmountofGoodwillDetail</Role>
      <ShortName>Goodwill and Other Intangible Assets, Net - Changes in Carrying Amount of Goodwill (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>90</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R91.htm</HtmlFileName>
      <LongName>9954530 - Disclosure - Other Intangible Assets - Intangibles by Type (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/OtherIntangibleAssetsIntangiblesbyTypeDetails</Role>
      <ShortName>Other Intangible Assets - Intangibles by Type (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>91</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>9954531 - Disclosure - Other Intangible Assets - Estimated Intangible Amortization Expense by Year (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/OtherIntangibleAssetsEstimatedIntangibleAmortizationExpensebyYearDetails</Role>
      <ShortName>Other Intangible Assets - Estimated Intangible Amortization Expense by Year (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>92</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>9954532 - Disclosure - Other Intangible Assets - Micro Mode Acquisition (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/OtherIntangibleAssetsMicroModeAcquisitionDetails</Role>
      <ShortName>Other Intangible Assets - Micro Mode Acquisition (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>93</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R94.htm</HtmlFileName>
      <LongName>9954533 - Disclosure - Other Intangible Assets - Clippard Acquisition (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/OtherIntangibleAssetsClippardAcquisitionDetails</Role>
      <ShortName>Other Intangible Assets - Clippard Acquisition (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>94</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R95.htm</HtmlFileName>
      <LongName>9954534 - Disclosure - Other Intangible Assets - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/OtherIntangibleAssetsAdditionalInformationDetails</Role>
      <ShortName>Other Intangible Assets - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>95</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R96.htm</HtmlFileName>
      <LongName>9954535 - Disclosure - Accrued Liabilities and Other Non-Current Liabilities - Component Details (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/AccruedLiabilitiesandOtherNonCurrentLiabilitiesComponentDetailsDetails</Role>
      <ShortName>Accrued Liabilities and Other Non-Current Liabilities - Component Details (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>96</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R97.htm</HtmlFileName>
      <LongName>9954536 - Disclosure - Leases - Future Operating Lease Obligations by Year (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/LeasesFutureOperatingLeaseObligationsbyYearDetails</Role>
      <ShortName>Leases - Future Operating Lease Obligations by Year (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>97</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R98.htm</HtmlFileName>
      <LongName>9954537 - Disclosure - Leases - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/LeasesAdditionalInformationDetails</Role>
      <ShortName>Leases - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>98</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R99.htm</HtmlFileName>
      <LongName>9954538 - Disclosure - Leases - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/LeasesAdditionalInformationDetails_1</Role>
      <ShortName>Leases - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>99</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R100.htm</HtmlFileName>
      <LongName>9954539 - Disclosure - Debt - Debt by Type (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/DebtDebtbyTypeDetails</Role>
      <ShortName>Debt - Debt by Type (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>100</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R101.htm</HtmlFileName>
      <LongName>9954540 - Disclosure - Debt - Commercial Paper (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/DebtCommercialPaperDetails</Role>
      <ShortName>Debt - Commercial Paper (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>101</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R102.htm</HtmlFileName>
      <LongName>9954541 - Disclosure - Debt - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/DebtAdditionalInformationDetails</Role>
      <ShortName>Debt - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>102</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R103.htm</HtmlFileName>
      <LongName>9954542 - Disclosure - Debt - Subsequent Event (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/DebtSubsequentEventDetails</Role>
      <ShortName>Debt - Subsequent Event (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>103</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R104.htm</HtmlFileName>
      <LongName>9954543 - Disclosure - Postretirement Benefit Plans - Summary of Funded Status (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/PostretirementBenefitPlansSummaryofFundedStatusDetails</Role>
      <ShortName>Postretirement Benefit Plans - Summary of Funded Status (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>104</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R105.htm</HtmlFileName>
      <LongName>9954544 - Disclosure - Postretirement Benefit Plans - Amount Recognized in Accumulated Other Comprehensive Income Loss (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/PostretirementBenefitPlansAmountRecognizedinAccumulatedOtherComprehensiveIncomeLossDetails</Role>
      <ShortName>Postretirement Benefit Plans - Amount Recognized in Accumulated Other Comprehensive Income Loss (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>105</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R106.htm</HtmlFileName>
      <LongName>9954545 - Disclosure - Postretirement Benefit Plans - Rollforward of the Projected Benefit Obligations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/PostretirementBenefitPlansRollforwardoftheProjectedBenefitObligationsDetails</Role>
      <ShortName>Postretirement Benefit Plans - Rollforward of the Projected Benefit Obligations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>106</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R107.htm</HtmlFileName>
      <LongName>9954546 - Disclosure - Postretirement Benefit Plans - Rollforward of Plan Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/PostretirementBenefitPlansRollforwardofPlanAssetsDetails</Role>
      <ShortName>Postretirement Benefit Plans - Rollforward of Plan Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>107</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R108.htm</HtmlFileName>
      <LongName>9954547 - Disclosure - Postretirement Benefit Plans - Pension Plans with Accumulated Benefit Obligation in Excess of Plan Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/PostretirementBenefitPlansPensionPlanswithAccumulatedBenefitObligationinExcessofPlanAssetsDetails</Role>
      <ShortName>Postretirement Benefit Plans - Pension Plans with Accumulated Benefit Obligation in Excess of Plan Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>108</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R109.htm</HtmlFileName>
      <LongName>9954548 - Disclosure - Postretirement Benefit Plans - Net Periodic Postretirement Cost Recognized in Other Comprehensive Income (Loss) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/PostretirementBenefitPlansNetPeriodicPostretirementCostRecognizedinOtherComprehensiveIncomeLossDetails</Role>
      <ShortName>Postretirement Benefit Plans - Net Periodic Postretirement Cost Recognized in Other Comprehensive Income (Loss) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>109</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R110.htm</HtmlFileName>
      <LongName>9954549 - Disclosure - Postretirement Benefit Plans - Assumptions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/PostretirementBenefitPlansAssumptionsDetails</Role>
      <ShortName>Postretirement Benefit Plans - Assumptions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>110</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R111.htm</HtmlFileName>
      <LongName>9954550 - Disclosure - Postretirement Benefit Plans - Estimated Future Benefit Payments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/PostretirementBenefitPlansEstimatedFutureBenefitPaymentsDetails</Role>
      <ShortName>Postretirement Benefit Plans - Estimated Future Benefit Payments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>111</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R112.htm</HtmlFileName>
      <LongName>9954551 - Disclosure - Postretirement Benefit Plans - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/PostretirementBenefitPlansAdditionalInformationDetails</Role>
      <ShortName>Postretirement Benefit Plans - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>112</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R113.htm</HtmlFileName>
      <LongName>9954552 - Disclosure - Long-Term Incentive - Compensation Costs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/LongTermIncentiveCompensationCostsDetails</Role>
      <ShortName>Long-Term Incentive - Compensation Costs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>113</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R114.htm</HtmlFileName>
      <LongName>9954553 - Disclosure - Long-Term Incentive - Rollforward of Outstanding RSUs and PSUs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/LongTermIncentiveRollforwardofOutstandingRSUsandPSUsDetails</Role>
      <ShortName>Long-Term Incentive - Rollforward of Outstanding RSUs and PSUs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>114</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R115.htm</HtmlFileName>
      <LongName>9954554 - Disclosure - Long-Term Incentive - Outstanding RSUs and PSUs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/LongTermIncentiveOutstandingRSUsandPSUsDetails</Role>
      <ShortName>Long-Term Incentive - Outstanding RSUs and PSUs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>115</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R116.htm</HtmlFileName>
      <LongName>9954555 - Disclosure - Long-Term Incentive - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/LongTermIncentiveAdditionalInformationDetails</Role>
      <ShortName>Long-Term Incentive - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>116</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R117.htm</HtmlFileName>
      <LongName>9954557 - Disclosure - Capital Stock - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CapitalStockAdditionalInformationDetails</Role>
      <ShortName>Capital Stock - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>117</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R118.htm</HtmlFileName>
      <LongName>9954558 - Disclosure - Commitments and Contingencies - Asbestos Divestiture Impacts (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CommitmentsandContingenciesAsbestosDivestitureImpactsDetails</Role>
      <ShortName>Commitments and Contingencies - Asbestos Divestiture Impacts (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>118</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R119.htm</HtmlFileName>
      <LongName>9954559 - Disclosure - Commitments and Contingencies - Asbestos Costs Summary (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CommitmentsandContingenciesAsbestosCostsSummaryDetails</Role>
      <ShortName>Commitments and Contingencies - Asbestos Costs Summary (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>119</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R120.htm</HtmlFileName>
      <LongName>9954561 - Disclosure - Commitments and Contingencies - Enviromental Liability Rollforward (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CommitmentsandContingenciesEnviromentalLiabilityRollforwardDetails</Role>
      <ShortName>Commitments and Contingencies - Enviromental Liability Rollforward (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>120</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R121.htm</HtmlFileName>
      <LongName>9954562 - Disclosure - Commitments and Contingencies - Range of Environmental Liability and Number of Active Sites for Environmental Matters (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CommitmentsandContingenciesRangeofEnvironmentalLiabilityandNumberofActiveSitesforEnvironmentalMattersDetail</Role>
      <ShortName>Commitments and Contingencies - Range of Environmental Liability and Number of Active Sites for Environmental Matters (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>121</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R122.htm</HtmlFileName>
      <LongName>9954563 - Disclosure - Commitments and Contingencies - Environmental Matters Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/CommitmentsandContingenciesEnvironmentalMattersAdditionalInformationDetails</Role>
      <ShortName>Commitments and Contingencies - Environmental Matters Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>122</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R123.htm</HtmlFileName>
      <LongName>9954564 - Disclosure - Guarantees, Indemnities and Warranties - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/GuaranteesIndemnitiesandWarrantiesAdditionalInformationDetails</Role>
      <ShortName>Guarantees, Indemnities and Warranties - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>123</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R124.htm</HtmlFileName>
      <LongName>9954565 - Disclosure - Guarantees, Indemnities and Warranties - Changes in Product Warranty Accrual (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/GuaranteesIndemnitiesandWarrantiesChangesinProductWarrantyAccrualDetails</Role>
      <ShortName>Guarantees, Indemnities and Warranties - Changes in Product Warranty Accrual (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>124</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R125.htm</HtmlFileName>
      <LongName>9954566 - Disclosure - Derivative Instruments - FX Contracts (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/DerivativeInstrumentsFXContractsDetails</Role>
      <ShortName>Derivative Instruments - FX Contracts (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>125</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R126.htm</HtmlFileName>
      <LongName>9954568 - Disclosure - Acquisitions - Habonim (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/AcquisitionsHabonimDetails</Role>
      <ShortName>Acquisitions - Habonim (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>126</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R127.htm</HtmlFileName>
      <LongName>9954569 - Disclosure - Acquisitions - Habonim Assets Acquired (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/AcquisitionsHabonimAssetsAcquiredDetails</Role>
      <ShortName>Acquisitions - Habonim Assets Acquired (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>127</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R128.htm</HtmlFileName>
      <LongName>9954570 - Disclosure - Investments - CRP (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/InvestmentsCRPDetails</Role>
      <ShortName>Investments - CRP (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>128</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R129.htm</HtmlFileName>
      <LongName>9954571 - Disclosure - Acquisitions - Other Acquisitions and Investments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/AcquisitionsOtherAcquisitionsandInvestmentsDetails</Role>
      <ShortName>Acquisitions - Other Acquisitions and Investments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>129</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R130.htm</HtmlFileName>
      <LongName>9954572 - Disclosure - Acquisitions - Micro-Mode (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/AcquisitionsMicroModeDetails</Role>
      <ShortName>Acquisitions - Micro-Mode (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>130</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R131.htm</HtmlFileName>
      <LongName>9954573 - Disclosure - Divestitures - Matrix (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/DivestituresMatrixDetails</Role>
      <ShortName>Divestitures - Matrix (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>131</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R132.htm</HtmlFileName>
      <LongName>9954574 - Disclosure - Divestitures - Product Line (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/DivestituresProductLineDetails</Role>
      <ShortName>Divestitures - Product Line (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>132</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R133.htm</HtmlFileName>
      <LongName>9954575 - Disclosure - Acquisitions - Subsequent Event (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.itt.com/role/AcquisitionsSubsequentEventDetails</Role>
      <ShortName>Acquisitions - Subsequent Event (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>133</Position>
    </Report>
    <Report instance="itt-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9999.htm</HtmlFileName>
      <LongName>Uncategorized Items - itt-20231231.htm</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/role/uncategorizedFacts</Role>
      <ShortName>Uncategorized Items - itt-20231231.htm</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>134</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-K" isDefinitelyFs="true" isUsgaap="true" original="itt-20231231.htm">itt-20231231.htm</File>
    <File>itt-20231231.xsd</File>
    <File>itt-20231231_cal.xml</File>
    <File>itt-20231231_def.xml</File>
    <File>itt-20231231_lab.xml</File>
    <File>itt-20231231_pre.xml</File>
  </InputFiles>
  <SupplementalFiles>
    <File>itt-20231231_g1.jpg</File>
    <File>itt-20231231_g2.jpg</File>
    <File>itt-20231231_g3.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="1825">http://fasb.org/us-gaap/2023</BaseTaxonomy>
    <BaseTaxonomy items="37">http://xbrl.sec.gov/dei/2023</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
