<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.25.2</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>569</ContextCount>
  <ElementCount>314</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>89</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>9</UnitCount>
  <MyReports>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>75000 - Document - Cover Page</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/CoverPage</Role>
      <ShortName>Cover Page</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>75010 - Statement - Consolidated Income Statement</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/ConsolidatedIncomeStatement</Role>
      <ShortName>Consolidated Income Statement</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>75020 - Statement - Consolidated Statement of Comprehensive Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/ConsolidatedStatementOfComprehensiveIncome</Role>
      <ShortName>Consolidated Statement of Comprehensive Income</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>75030 - Statement - Consolidated Statement of Financial Position</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/ConsolidatedStatementOfFinancialPosition</Role>
      <ShortName>Consolidated Statement of Financial Position</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>75040 - Statement - Consolidated Statement of Cash Flow</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/ConsolidatedStatementOfCashFlow</Role>
      <ShortName>Consolidated Statement of Cash Flow</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>75050 - Statement - Consolidated Statement of Changes in Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/ConsolidatedStatementOfChangesInEquity</Role>
      <ShortName>Consolidated Statement of Changes in Equity</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>75060 - Statement - Consolidated Statement of Changes in Equity (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/StatementConsolidatedStatementOfChangesInEquityParenthetical</Role>
      <ShortName>Consolidated Statement of Changes in Equity (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>75070 - Disclosure - Business Description and Basis of Preparation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/DisclosureBusinessDescriptionAndBasisOfPreparation</Role>
      <ShortName>Business Description and Basis of Preparation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>75090 - Disclosure - Revenues</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/Revenues</Role>
      <ShortName>Revenues</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>75100 - Disclosure - Segment Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/SegmentInformation</Role>
      <ShortName>Segment Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>75110 - Disclosure - Seasonality</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/DisclosureSeasonality</Role>
      <ShortName>Seasonality</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>75120 - Disclosure - Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/OperatingExpenses</Role>
      <ShortName>Operating Expenses</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>75130 - Disclosure - Other Operating Gains (Losses), Net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/DisclosureOtherOperatingGainsLossesNet</Role>
      <ShortName>Other Operating Gains (Losses), Net</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>75150 - Disclosure - Finance Costs, Net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/FinanceCostsNet</Role>
      <ShortName>Finance Costs, Net</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>75160 - Disclosure - Equity Method Investments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/EquityMethodInvestments</Role>
      <ShortName>Equity Method Investments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>75170 - Disclosure - Taxation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/Taxation</Role>
      <ShortName>Taxation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>75180 - Disclosure - Earnings Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/EarningsPerShare</Role>
      <ShortName>Earnings Per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>75250 - Disclosure - Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/FinancialInstruments</Role>
      <ShortName>Financial Instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>75260 - Disclosure - Other Non-Current Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/OtherNonCurrentAssets</Role>
      <ShortName>Other Non-Current Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>75270 - Disclosure - Payables, Accruals and Provisions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/PayablesAccrualsAndProvisions</Role>
      <ShortName>Payables, Accruals and Provisions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>75280 - Disclosure - Provisions and Other Non-Current Liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/ProvisionsAndOtherNonCurrentLiabilities</Role>
      <ShortName>Provisions and Other Non-Current Liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>75300 - Disclosure - Capital</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/Capital</Role>
      <ShortName>Capital</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>75340 - Disclosure - Supplemental Cash Flow Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/SupplementalCashFlowInformation</Role>
      <ShortName>Supplemental Cash Flow Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>75350 - Disclosure - Acquisitions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/Acquisitions</Role>
      <ShortName>Acquisitions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>75360 - Disclosure - Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/DisclosureContingencies</Role>
      <ShortName>Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>75370 - Disclosure - Related Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/RelatedPartyTransactions</Role>
      <ShortName>Related Party Transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>75390 - Disclosure - Business Description and Basis of Preparation (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/DisclosureBusinessDescriptionAndBasisOfPreparationPolicies</Role>
      <ShortName>Business Description and Basis of Preparation (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>75410 - Disclosure - Revenues (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/RevenuesTables</Role>
      <ShortName>Revenues (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tr.com/20250630/taxonomy/role/Revenues</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>75420 - Disclosure - Segment Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/SegmentInformationTables</Role>
      <ShortName>Segment Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tr.com/20250630/taxonomy/role/SegmentInformation</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>75430 - Disclosure - Operating Expenses (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/OperatingExpensesTables</Role>
      <ShortName>Operating Expenses (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tr.com/20250630/taxonomy/role/OperatingExpenses</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>75450 - Disclosure - Finance Costs, Net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/FinanceCostsNetTables</Role>
      <ShortName>Finance Costs, Net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tr.com/20250630/taxonomy/role/FinanceCostsNet</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>75460 - Disclosure - Equity Method Investments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/EquityMethodInvestmentsTables</Role>
      <ShortName>Equity Method Investments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tr.com/20250630/taxonomy/role/EquityMethodInvestments</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>75470 - Disclosure - Earnings Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/EarningsPerShareTables</Role>
      <ShortName>Earnings Per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tr.com/20250630/taxonomy/role/EarningsPerShare</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>75550 - Disclosure - Financial Instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/FinancialInstrumentsTables</Role>
      <ShortName>Financial Instruments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tr.com/20250630/taxonomy/role/FinancialInstruments</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>75560 - Disclosure - Other Non-Current Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/OtherNonCurrentAssetsTables</Role>
      <ShortName>Other Non-Current Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tr.com/20250630/taxonomy/role/OtherNonCurrentAssets</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>75570 - Disclosure - Payables, Accruals and Provisions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/PayablesAccrualsAndProvisionsTables</Role>
      <ShortName>Payables, Accruals and Provisions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tr.com/20250630/taxonomy/role/PayablesAccrualsAndProvisions</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>75580 - Disclosure - Provisions and Other Non-Current Liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/ProvisionsAndOtherNonCurrentLiabilitiesTables</Role>
      <ShortName>Provisions and Other Non-Current Liabilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tr.com/20250630/taxonomy/role/ProvisionsAndOtherNonCurrentLiabilities</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>75600 - Disclosure - Capital (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/CapitalTables</Role>
      <ShortName>Capital (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tr.com/20250630/taxonomy/role/Capital</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>75640 - Disclosure - Supplemental Cash Flow Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/SupplementalCashFlowInformationTables</Role>
      <ShortName>Supplemental Cash Flow Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tr.com/20250630/taxonomy/role/SupplementalCashFlowInformation</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>75650 - Disclosure - Acquisitions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/AcquisitionsTables</Role>
      <ShortName>Acquisitions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tr.com/20250630/taxonomy/role/Acquisitions</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>75680 - Disclosure - Critical Accounting Estimates and Judgments - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/CriticalAccountingEstimatesAndJudgmentsAdditionalInformationDetail</Role>
      <ShortName>Critical Accounting Estimates and Judgments - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>75690 - Disclosure - Revenues - Summary of Revenues by Type (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/RevenuesSummaryOfRevenuesByTypeDetail</Role>
      <ShortName>Revenues - Summary of Revenues by Type (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>75700 - Disclosure - Revenues - Summary of Geographical Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/RevenuesSummaryOfGeographicalInformationDetail</Role>
      <ShortName>Revenues - Summary of Geographical Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>75710 - Disclosure - Segment Information - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/SegmentInformationAdditionalInformationDetail</Role>
      <ShortName>Segment Information - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>75720 - Disclosure - Segment Information - Summary of Operating Results of Reportable Segments (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/SegmentInformationSummaryOfOperatingResultsOfReportableSegmentsDetail</Role>
      <ShortName>Segment Information - Summary of Operating Results of Reportable Segments (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>75730 - Disclosure - Segment Information - Summary of Operating Results of Reportable Segments (Parenthetical) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/DisclosureSegmentInformationSummaryOfOperatingResultsOfReportableSegmentsParentheticalDetail</Role>
      <ShortName>Segment Information - Summary of Operating Results of Reportable Segments (Parenthetical) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>75740 - Disclosure - Operating Expenses - Components of Operating Expenses (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/OperatingExpensesComponentsOfOperatingExpensesDetail</Role>
      <ShortName>Operating Expenses - Components of Operating Expenses (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>75750 - Disclosure - Other Operating Gains (Losses), Net - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/DisclosureOtherOperatingGainsLossesNetAdditionalInformationDetail</Role>
      <ShortName>Other Operating Gains (Losses), Net - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.tr.com/20250630/taxonomy/role/DisclosureOtherOperatingGainsLossesNet</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>75760 - Disclosure - Divestitures - Summary of Net Assets Disposed (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/DivestituresSummaryOfNetAssetsDisposedDetail</Role>
      <ShortName>Divestitures - Summary of Net Assets Disposed (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>75790 - Disclosure - Finance Costs, Net - Components of Finance Costs, Net, Include Interest Expense (Income) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/FinanceCostsNetComponentsOfFinanceCostsNetIncludeInterestExpenseIncomeDetail</Role>
      <ShortName>Finance Costs, Net - Components of Finance Costs, Net, Include Interest Expense (Income) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>75810 - Disclosure - Finance Costs, Net - Components of Finance Costs, Net, Include Other Finance Costs (Income) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/FinanceCostsNetComponentsOfFinanceCostsNetIncludeOtherFinanceCostsIncomeDetail</Role>
      <ShortName>Finance Costs, Net - Components of Finance Costs, Net, Include Other Finance Costs (Income) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>75820 - Disclosure - Equity Method Investments - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/EquityMethodInvestmentsAdditionalInformationDetail</Role>
      <ShortName>Equity Method Investments - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>75830 - Disclosure - Equity Method Investments - Summary of Share of Post-Tax Earnings in its YPL Investment (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/EquityMethodInvestmentsSummaryOfShareOfPostTaxEarningsInItsYplInvestmentDetail</Role>
      <ShortName>Equity Method Investments - Summary of Share of Post-Tax Earnings in its YPL Investment (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>75840 - Disclosure - Equity Method Investments - Summary Financial Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/EquityMethodInvestmentsSummaryFinancialInformationDetail</Role>
      <ShortName>Equity Method Investments - Summary Financial Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>75850 - Disclosure - Taxation - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/TaxationAdditionalInformationDetail</Role>
      <ShortName>Taxation - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>75870 - Disclosure - Earnings Per Share - Reconciliation of Earnings Used for Earnings per Share Calculations (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/EarningsPerShareReconciliationOfEarningsUsedForEarningsPerShareCalculationsDetail</Role>
      <ShortName>Earnings Per Share - Reconciliation of Earnings Used for Earnings per Share Calculations (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>75880 - Disclosure - Earnings Per Share - Weighted Average Common Shares (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/EarningsPerShareWeightedAverageCommonSharesDetail</Role>
      <ShortName>Earnings Per Share - Weighted Average Common Shares (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>75890 - Disclosure - Cash and Cash Equivalents - Additional information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/CashAndCashEquivalentsAdditionalInformationDetail</Role>
      <ShortName>Cash and Cash Equivalents - Additional information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>75940 - Disclosure - Property and Equipment - Summary of Property and Equipment (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/PropertyAndEquipmentSummaryOfPropertyAndEquipmentDetail</Role>
      <ShortName>Property and Equipment - Summary of Property and Equipment (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>75980 - Disclosure - Goodwill - Summary of Goodwill (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/GoodwillSummaryOfGoodwillDetail</Role>
      <ShortName>Goodwill - Summary of Goodwill (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>76000 - Disclosure - Financial Instruments - Summary of Financial Assets and Liabilities (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/FinancialInstrumentsSummaryOfFinancialAssetsAndLiabilitiesDetail</Role>
      <ShortName>Financial Instruments - Summary of Financial Assets and Liabilities (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>76010 - Disclosure - Financial Instruments - Summary of Financial Assets and Liabilities (Parenthetical) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/FinancialInstrumentsSummaryOfFinancialAssetsAndLiabilitiesParentheticalDetail</Role>
      <ShortName>Financial Instruments - Summary of Financial Assets and Liabilities (Parenthetical) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>76020 - Disclosure - Financial Instruments - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/FinancialInstrumentsAdditionalInformationDetail</Role>
      <ShortName>Financial Instruments - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>76030 - Disclosure - Financial Instruments - Summary of Debt Exchange (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/DisclosureFinancialInstrumentsSummaryOfDebtExchangeDetails</Role>
      <ShortName>Financial Instruments - Summary of Debt Exchange (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>76040 - Disclosure - Financial Instruments - Summary of Debt Exchange (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/DisclosureFinancialInstrumentsSummaryOfDebtExchangeParentheticalDetails</Role>
      <ShortName>Financial Instruments - Summary of Debt Exchange (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>76050 - Disclosure - Financial Instruments - Summary of Debt and Related Derivative Instruments (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/DisclosureFinancialInstrumentsSummaryOfDebtAndRelatedDerivativeInstrumentsDetail</Role>
      <ShortName>Financial Instruments - Summary of Debt and Related Derivative Instruments (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>76060 - Disclosure - Financial Instruments - Summary of Debt and Related Derivative Instruments (Parenthetical) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/DisclosureFinancialInstrumentsSummaryOfDebtAndRelatedDerivativeInstrumentsParentheticalDetail</Role>
      <ShortName>Financial Instruments - Summary of Debt and Related Derivative Instruments (Parenthetical) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>76070 - Disclosure - Financial Instruments - Summary of Fair Value Measurements Carried at Fair Value in the Consolidated Statement of Financial Position (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/FinancialInstrumentsSummaryOfFairValueMeasurementsCarriedAtFairValueInTheConsolidatedStatementOfFinancialPositionDetail</Role>
      <ShortName>Financial Instruments - Summary of Fair Value Measurements Carried at Fair Value in the Consolidated Statement of Financial Position (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>76080 - Disclosure - Other Non-Current Assets - Summary of Other Non-Current Assets (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/OtherNonCurrentAssetsSummaryOfOtherNonCurrentAssetsDetail</Role>
      <ShortName>Other Non-Current Assets - Summary of Other Non-Current Assets (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>76090 - Disclosure - Other Non-Current Assets - Summary of Other Non-Current Assets (Parenthetical) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/OtherNonCurrentAssetsSummaryOfOtherNonCurrentAssetsParentheticalDetail</Role>
      <ShortName>Other Non-Current Assets - Summary of Other Non-Current Assets (Parenthetical) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>76100 - Disclosure - Payables, Accruals and Provisions - Schedule of Payables, Accruals and Provisions (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/PayablesAccrualsAndProvisionsScheduleOfPayablesAccrualsAndProvisionsDetail</Role>
      <ShortName>Payables, Accruals and Provisions - Schedule of Payables, Accruals and Provisions (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>76110 - Disclosure - Provisions and Other Non-Current Liabilities - Summary of Provisions and Other Non-Current Liabilities (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/ProvisionsAndOtherNonCurrentLiabilitiesSummaryOfProvisionsAndOtherNonCurrentLiabilitiesDetail</Role>
      <ShortName>Provisions and Other Non-Current Liabilities - Summary of Provisions and Other Non-Current Liabilities (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>76130 - Disclosure - Deferred Tax - Summary of Estimated Recovery Period For Deferred Tax Balances (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/DeferredTaxSummaryOfEstimatedRecoveryPeriodForDeferredTaxBalancesDetail</Role>
      <ShortName>Deferred Tax - Summary of Estimated Recovery Period For Deferred Tax Balances (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>76150 - Disclosure - Deferred Tax - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/DeferredTaxAdditionalInformationDetail</Role>
      <ShortName>Deferred Tax - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>76160 - Disclosure - Capital - Summary of Change in Capital (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/CapitalSummaryOfChangeInCapitalDetail</Role>
      <ShortName>Capital - Summary of Change in Capital (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>76180 - Disclosure - Capital - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/CapitalAdditionalInformationDetail</Role>
      <ShortName>Capital - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>76190 - Disclosure - Capital - Details of Share Repurchases (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/CapitalDetailsOfShareRepurchasesDetail</Role>
      <ShortName>Capital - Details of Share Repurchases (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>76200 - Disclosure - Capital - Summary of Dividend Declared and Paid (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/CapitalSummaryOfDividendDeclaredAndPaidDetail</Role>
      <ShortName>Capital - Summary of Dividend Declared and Paid (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>76250 - Disclosure - Share-Based Compensation - Summary of Share Based Compensation Expense (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/ShareBasedCompensationSummaryOfShareBasedCompensationExpenseDetail</Role>
      <ShortName>Share-Based Compensation - Summary of Share Based Compensation Expense (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>76280 - Disclosure - Employee Benefit Plans - Net Defined Benefit Plan Obligations (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/EmployeeBenefitPlansNetDefinedBenefitPlanObligationsDetail</Role>
      <ShortName>Employee Benefit Plans - Net Defined Benefit Plan Obligations (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>76430 - Disclosure - Leases - Summary of Future Aggregate Undiscounted Non-cancellable Lease Payments (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/LeasesSummaryOfFutureAggregateUndiscountedNonCancellableLeasePaymentsDetail</Role>
      <ShortName>Leases - Summary of Future Aggregate Undiscounted Non-cancellable Lease Payments (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>81</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>76440 - Disclosure - Supplemental Cash Flow Information - Details of Other in the Consolidated Statement of Cash Flow (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/SupplementalCashFlowInformationDetailsOfOtherInTheConsolidatedStatementOfCashFlowDetail</Role>
      <ShortName>Supplemental Cash Flow Information - Details of Other in the Consolidated Statement of Cash Flow (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>82</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>76450 - Disclosure - Supplemental Cash Flow Information - Details of Changes in Working Capital and Other Items (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/SupplementalCashFlowInformationDetailsOfChangesInWorkingCapitalAndOtherItemsDetail</Role>
      <ShortName>Supplemental Cash Flow Information - Details of Changes in Working Capital and Other Items (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>83</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>76460 - Disclosure - Supplemental Cash Flow Information - Details of Income Taxes Paid (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/SupplementalCashFlowInformationDetailsOfIncomeTaxesPaidDetail</Role>
      <ShortName>Supplemental Cash Flow Information - Details of Income Taxes Paid (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>84</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>76470 - Disclosure - Acquisitions - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/AcquisitionsAdditionalInformationDetail</Role>
      <ShortName>Acquisitions - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>85</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>76480 - Disclosure - Acquisitions - Summary of Acquisition Activity (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/AcquisitionsSummaryOfAcquisitionActivityDetail</Role>
      <ShortName>Acquisitions - Summary of Acquisition Activity (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>86</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>76490 - Disclosure - Acquisitions - Summary of Brief Description of the Most Significant Acquisition (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/AcquisitionsSummaryOfBriefDescriptionOfTheMostSignificantAcquisitionDetail</Role>
      <ShortName>Acquisitions - Summary of Brief Description of the Most Significant Acquisition (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>87</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>76500 - Disclosure - Acquisitions - Summary of Net Assets Acquired (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/AcquisitionsSummaryOfNetAssetsAcquiredDetail</Role>
      <ShortName>Acquisitions - Summary of Net Assets Acquired (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>88</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>76510 - Disclosure - Contingencies - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/DisclosureContingenciesAdditionalInformationDetail</Role>
      <ShortName>Contingencies - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>89</Position>
    </Report>
    <Report instance="tri-20250630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>76520 - Disclosure - Related Party Transactions - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tr.com/20250630/taxonomy/role/RelatedPartyTransactionsAdditionalInformationDetail</Role>
      <ShortName>Related Party Transactions - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>90</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="6-K" isDefinitelyFs="true" isIfrs="true" original="tri-20250630.htm">tri-20250630.htm</File>
    <File doctype="6-K" isDefinitelyFs="true" isIfrs="true" original="tri-ex99_2.htm">tri-ex99_2.htm</File>
    <File>tri-20250630.xsd</File>
  </InputFiles>
  <SupplementalFiles>
    <File>img22008411_0.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="8">http://xbrl.sec.gov/dei/2024</BaseTaxonomy>
    <BaseTaxonomy items="1410">https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>false</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
