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  <element name="ContingentConsideration" id="tri_ContingentConsideration" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CorporateBondsMember" id="tri_CorporateBondsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CostsUnderLeaseArrangementForRentTaxesAndOtherExpenses" id="tri_CostsUnderLeaseArrangementForRentTaxesAndOtherExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="CreditFacilityTwoMember" id="tri_CreditFacilityTwoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CreditRatingsOnCommercialPaperDescription" id="tri_CreditRatingsOnCommercialPaperDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CreditRatingsOnLongtermDebtDescription" id="tri_CreditRatingsOnLongtermDebtDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CreditRatingsTrendDescription" id="tri_CreditRatingsTrendDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CrosscurrencyInterestRateSwapsMember" id="tri_CrosscurrencyInterestRateSwapsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CurrencyAndInterestRatePaid" id="tri_CurrencyAndInterestRatePaid" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CurrencyAndInterestRateReceived" id="tri_CurrencyAndInterestRateReceived" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CustomerRelationshipsArisingFromTheAcquisition" id="tri_CustomerRelationshipsArisingFromTheAcquisition" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CustomerRelationshipsArisingFromTheAcquisitionAmortizationPeriod" id="tri_CustomerRelationshipsArisingFromTheAcquisitionAmortizationPeriod" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DBRSLimitedMember" id="tri_DBRSLimitedMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DebtAfterCurrencyHedgingArrangements" id="tri_DebtAfterCurrencyHedgingArrangements" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DebtBeforeCurrencyHedgingArrangements" id="tri_DebtBeforeCurrencyHedgingArrangements" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DebtRelatedHedgesOutflows" id="tri_DebtRelatedHedgesOutflows" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DecreaseProfitLossBeforeTax" id="tri_DecreaseProfitLossBeforeTax" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DeferredIncomeTaxExpenseAxis" id="tri_DeferredIncomeTaxExpenseAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem"/>
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  <element name="DeferredTaxAssetIncreaseDecreaseInTransferToAssetsHeldForSale" id="tri_DeferredTaxAssetIncreaseDecreaseInTransferToAssetsHeldForSale" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DescriptionOfAccountingPolicyForPostemploymentEmployeeBenefitsExplanatory" id="tri_DescriptionOfAccountingPolicyForPostemploymentEmployeeBenefitsExplanatory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DescriptionOfAccountingPolicyForPrinciplesOfConsolidationExplanatory" id="tri_DescriptionOfAccountingPolicyForPrinciplesOfConsolidationExplanatory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DisclosureOfChangesInOutstandingStockbasedAwardsAndNumberOfAwardsExercisableExplanatory" id="tri_DisclosureOfChangesInOutstandingStockbasedAwardsAndNumberOfAwardsExercisableExplanatory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureOfChangesInThePresentValueOfDefinedBenefitObligationExplanatory" id="tri_DisclosureOfChangesInThePresentValueOfDefinedBenefitObligationExplanatory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DisclosureOfFutureUnconditionalPurchaseObligationsTable" id="tri_DisclosureOfFutureUnconditionalPurchaseObligationsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="DisclosureOfHypotheticalChangeInForeignCurrencyExchangeRatesOnEarningsTable" id="tri_DisclosureOfHypotheticalChangeInForeignCurrencyExchangeRatesOnEarningsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="DisclosureOfImpairmentTestOfIntangibleAssetsWithIndefiniteUsefulLifeExplanatory" id="tri_DisclosureOfImpairmentTestOfIntangibleAssetsWithIndefiniteUsefulLifeExplanatory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureOfIncomeTaxesLineItems" id="tri_DisclosureOfIncomeTaxesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureOfIncomeTaxesTable" id="tri_DisclosureOfIncomeTaxesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="DisclosureOfKeyAssumptionsUsedInPerformingGoodwillImpairmentExplanatory" id="tri_DisclosureOfKeyAssumptionsUsedInPerformingGoodwillImpairmentExplanatory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureOfKeyManagementPersonnelCompensationIncludingDirectorsOfEntityOrParentExpalantory" id="tri_DisclosureOfKeyManagementPersonnelCompensationIncludingDirectorsOfEntityOrParentExpalantory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureOfLifeExpectationOfAnAveragePlanParticipantExplanatory" id="tri_DisclosureOfLifeExpectationOfAnAveragePlanParticipantExplanatory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureOfMajorCategoriesOfDefinedBenefitPlanAssetsExplanatory" id="tri_DisclosureOfMajorCategoriesOfDefinedBenefitPlanAssetsExplanatory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DisclosureOfMovementsOfDeferredTaxAssetsAndLiabilitiesExplanatory" id="tri_DisclosureOfMovementsOfDeferredTaxAssetsAndLiabilitiesExplanatory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DisclosureOfNetSurplusDeficitInPlanExplanatory" id="tri_DisclosureOfNetSurplusDeficitInPlanExplanatory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureOfNumberAndWeightedAverageExercisePriceOfOutstandingAwardsLineItems" id="tri_DisclosureOfNumberAndWeightedAverageExercisePriceOfOutstandingAwardsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureOfNumberAndWeightedAverageExercisePriceOfOutstandingAwardsTable" id="tri_DisclosureOfNumberAndWeightedAverageExercisePriceOfOutstandingAwardsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesLineItems" id="tri_DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DisclosureOfOptionPricingModelAssumptionsExplanatory" id="tri_DisclosureOfOptionPricingModelAssumptionsExplanatory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DisclosureOfOtherInConsolidatedStatementOfCashFlowAbstract" id="tri_DisclosureOfOtherInConsolidatedStatementOfCashFlowAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureOfOtherOperatingGainsLineItems" id="tri_DisclosureOfOtherOperatingGainsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureOfOtherOperatingGainsNetTable" id="tri_DisclosureOfOtherOperatingGainsNetTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="DisclosureOfOtherReportableSegmentDataExplanatory" id="tri_DisclosureOfOtherReportableSegmentDataExplanatory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureOfPayablesAccrualsAndProvisionsAbstract" id="tri_DisclosureOfPayablesAccrualsAndProvisionsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DisclosureOfWeightedAverageNumberOfCommonSharesOutstandingAndItsReconciliationExplanatory" id="tri_DisclosureOfWeightedAverageNumberOfCommonSharesOutstandingAndItsReconciliationExplanatory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DisclosureShareBasedCompensationSummaryOfAdditionalInformationRelatingToStockOptionsAndSARsAbstract" id="tri_DisclosureShareBasedCompensationSummaryOfAdditionalInformationRelatingToStockOptionsAndSARsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="DividendsReinvestedOrdinaryShares" id="tri_DividendsReinvestedOrdinaryShares" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="ElectronicSoftwareAndServicesMember" id="tri_ElectronicSoftwareAndServicesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="EquitysettledPlansMember" id="tri_EquitysettledPlansMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EurosSellMember" id="tri_EurosSellMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="ExpenseFromShareBasedPaymentTransactionsWithEmployeesShareBasedCompensationIncludingExpenseRelatingToRevaluationOfWithholdingTaxes" id="tri_ExpenseFromShareBasedPaymentTransactionsWithEmployeesShareBasedCompensationIncludingExpenseRelatingToRevaluationOfWithholdingTaxes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="FairValueInterestComponentOfCrossCurrencyInterestRateSwaps" id="tri_FairValueInterestComponentOfCrossCurrencyInterestRateSwaps" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="FairValueOfTradeNamesInExcessOfCarryingValue" id="tri_FairValueOfTradeNamesInExcessOfCarryingValue" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="GainsLossesRecognizedInProfitLossAriseFromForeignCurrencyTranslationRelatedToDebt" id="tri_GainsLossesRecognizedInProfitLossAriseFromForeignCurrencyTranslationRelatedToDebt" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="GoodsAndServicesExpenses" id="tri_GoodsAndServicesExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="GoodwillRecognisedAsOfAcquisitionDate" id="tri_GoodwillRecognisedAsOfAcquisitionDate" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="GovernmentBondsMember" id="tri_GovernmentBondsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ImpactOnEarningsDueToChangesInForeignCurrencyExchangeRatesDueToChangesInForeignCurrencyExchangeRates" id="tri_ImpactOnEarningsDueToChangesInForeignCurrencyExchangeRatesDueToChangesInForeignCurrencyExchangeRates" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ImpactOnEarningsFromFinancialAssetsAndLiabilitiesDueToChangesInForeignCurrencyExchangeRates" id="tri_ImpactOnEarningsFromFinancialAssetsAndLiabilitiesDueToChangesInForeignCurrencyExchangeRates" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ImpactOnEarningsFromNonpermanentIntercompanyLoansDueToChangesInForeignCurrencyExchangeRates" id="tri_ImpactOnEarningsFromNonpermanentIntercompanyLoansDueToChangesInForeignCurrencyExchangeRates" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ImpactOnIncomeTaxFromChangesInTaxRatesAndTaxLaws" id="tri_ImpactOnIncomeTaxFromChangesInTaxRatesAndTaxLaws" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeLossFromDiscontinuedOperationsAbstract" id="tri_IncomeLossFromDiscontinuedOperationsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeLossFromDiscontinuedOperationsLineItems" id="tri_IncomeLossFromDiscontinuedOperationsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeLossFromDiscontinuedOperationsTable" id="tri_IncomeLossFromDiscontinuedOperationsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="IncomeTaxesPaidRefundClassifiedAsOperatingActivitiesDiscontinuedOperations" id="tri_IncomeTaxesPaidRefundClassifiedAsOperatingActivitiesDiscontinuedOperations" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncreaseDecreaseInAssetCeiling" id="tri_IncreaseDecreaseInAssetCeiling" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncreaseDecreaseInEffectiveTaxRate" id="tri_IncreaseDecreaseInEffectiveTaxRate" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncreaseDecreaseInWorkingCapitalAndOtherItems" id="tri_IncreaseDecreaseInWorkingCapitalAndOtherItems" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiability" id="tri_IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiability" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncreaseInLifeExpectancy" id="tri_IncreaseInLifeExpectancy" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncreaseInReserveForAccountsReceivablePercentage" id="tri_IncreaseInReserveForAccountsReceivablePercentage" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InsuranceAmountContributedToFairValueOfPlanAssets" id="tri_InsuranceAmountContributedToFairValueOfPlanAssets" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InterestCostOnIrrecoverableSurplusNetDefinedBenefitAssetToAssetCeilingNetDefinedBenefitLiabilityAsset" id="tri_InterestCostOnIrrecoverableSurplusNetDefinedBenefitAssetToAssetCeilingNetDefinedBenefitLiabilityAsset" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InterestExpenseOnDerivativeFinancialInstruments" id="tri_InterestExpenseOnDerivativeFinancialInstruments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InterestIncomeSensitivity" id="tri_InterestIncomeSensitivity" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InterestRateChange" id="tri_InterestRateChange" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InvestmentsInBusinessesRecognisedAsOfAcquisitionDate" id="tri_InvestmentsInBusinessesRecognisedAsOfAcquisitionDate" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="JapaneseYenSellMember" id="tri_JapaneseYenSellMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LeasedSpace" id="tri_LeasedSpace" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LeasesExpirationPeriod" id="tri_LeasesExpirationPeriod" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LegalMember" id="tri_LegalMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LessThanOneMonthPastDueMember" id="tri_LessThanOneMonthPastDueMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LiabilitiesRecognisedAsOfAcquisitionDate" id="tri_LiabilitiesRecognisedAsOfAcquisitionDate" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LifeExpectationPeriodOfFemaleEmployeesAgeAtFortyAndRetiringAtAgeSixtyFive" id="tri_LifeExpectationPeriodOfFemaleEmployeesAgeAtFortyAndRetiringAtAgeSixtyFive" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LifeExpectationPeriodOfFemaleEmployeesRetiringAtAgeSixtyFive" id="tri_LifeExpectationPeriodOfFemaleEmployeesRetiringAtAgeSixtyFive" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LifeExpectationPeriodOfMaleEmployeesAgeAtFortyAndRetiringAtAgeSixtyFive" id="tri_LifeExpectationPeriodOfMaleEmployeesAgeAtFortyAndRetiringAtAgeSixtyFive" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LifeExpectationPeriodOfMaleEmployeesRetiringAtAgeSixtyFive" id="tri_LifeExpectationPeriodOfMaleEmployeesRetiringAtAgeSixtyFive" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LondonInterbankOfferedRateLIBOR1Member" id="tri_LondonInterbankOfferedRateLIBOR1Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="Long1Member" id="tri_Long1Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LossesFromRedemptionOfDebtSecurities" id="tri_LossesFromRedemptionOfDebtSecurities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaterialDefinedBenefitPlansMember" id="tri_MaterialDefinedBenefitPlansMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaximumExposureToPriceRisk" id="tri_MaximumExposureToPriceRisk" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaximumGrossLoanCommitmentUponRequest" id="tri_MaximumGrossLoanCommitmentUponRequest" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaximumNumberOfCommonSharesAvailableForGrant" id="tri_MaximumNumberOfCommonSharesAvailableForGrant" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaximumNumberOfSharesIssuableUnderPlans" id="tri_MaximumNumberOfSharesIssuableUnderPlans" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaximumPayrollDeductionAllowedForEmployeeStockPurchasePlan" id="tri_MaximumPayrollDeductionAllowedForEmployeeStockPurchasePlan" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaximumSharesAllowedToBePurchasedForEmployeeStockPurchasePlan" id="tri_MaximumSharesAllowedToBePurchasedForEmployeeStockPurchasePlan" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MoneyMarketAccounts" id="tri_MoneyMarketAccounts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MoodysMember" id="tri_MoodysMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MultiAssetMember" id="tri_MultiAssetMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetActuarialGainsAndLosses" id="tri_NetActuarialGainsAndLosses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetDebtRatio" id="tri_NetDebtRatio" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetInterestExpenseFromDebtAndOther" id="tri_NetInterestExpenseFromDebtAndOther" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetInterestExpenseFromPensionAndOtherPostEmploymentBenefitPlans" id="tri_NetInterestExpenseFromPensionAndOtherPostEmploymentBenefitPlans" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetNonTaxableGainsOnDisposalOfBusinesses" id="tri_NetNonTaxableGainsOnDisposalOfBusinesses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NormalCourseIssuerBidMember" id="tri_NormalCourseIssuerBidMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NormalRetirementAge" id="tri_NormalRetirementAge" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NotesAndDebenturesMember" id="tri_NotesAndDebenturesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NotesDebenturesAndCommercialPaperMember" id="tri_NotesDebenturesAndCommercialPaperMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfAntidilutiveShareOptionsOutstanding" id="tri_NumberOfAntidilutiveShareOptionsOutstanding" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfCommonSharesAvailableForGrant" id="tri_NumberOfCommonSharesAvailableForGrant" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfSharesIssuedThroughStockCompensationPlans" id="tri_NumberOfSharesIssuedThroughStockCompensationPlans" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfSharesIssuedUnderDividendReinvestmentPlan" id="tri_NumberOfSharesIssuedUnderDividendReinvestmentPlan" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfSharesRepurchasedDuringPeriod" id="tri_NumberOfSharesRepurchasedDuringPeriod" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfTransactions" id="tri_NumberOfTransactions" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfTransactionsBusinessesAcquired" id="tri_NumberOfTransactionsBusinessesAcquired" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfTransactionsInvestmentsInBusinesses" id="tri_NumberOfTransactionsInvestmentsInBusinesses" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OnePointSixFiveNotesDueTwoThousandSeventeenMember" id="tri_OnePointSixFiveNotesDueTwoThousandSeventeenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OnePointThreeZeroNotesDueTwoThousandSeventeenMember" id="tri_OnePointThreeZeroNotesDueTwoThousandSeventeenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OPEBMember" id="tri_OPEBMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OperatingExpenses1Abstract" id="tri_OperatingExpenses1Abstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherAdjustmentsRelatedToPriorYears" id="tri_OtherAdjustmentsRelatedToPriorYears" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherAttributesAndCreditsMember" id="tri_OtherAttributesAndCreditsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherComprehensiveIncomeBeforeTaxActuarialLossesGainsOnDefinedBenefitPlans" id="tri_OtherComprehensiveIncomeBeforeTaxActuarialLossesGainsOnDefinedBenefitPlans" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherCountriesMember" id="tri_OtherCountriesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherCurrenciesMember" id="tri_OtherCurrenciesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherFixedIncomeMember" id="tri_OtherFixedIncomeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherJurisdictionsMember" id="tri_OtherJurisdictionsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherMember" id="tri_OtherMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherNoncurrentAssetsAbstract" id="tri_OtherNoncurrentAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherOperatingIncomeAbstract" id="tri_OtherOperatingIncomeAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherOtherFinancialLiabilitiesMember" id="tri_OtherOtherFinancialLiabilitiesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherPostEmploymentBenefitsMember" id="tri_OtherPostEmploymentBenefitsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherShareOptionMember" id="tri_OtherShareOptionMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OthersMember" id="tri_OthersMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PayablesAccrualsAndProvisions" id="tri_PayablesAccrualsAndProvisions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PaymentsToAcquireAnnuityContractsFromThirdParty" id="tri_PaymentsToAcquireAnnuityContractsFromThirdParty" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PensionContribution" id="tri_PensionContribution" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PensionPlansMember" id="tri_PensionPlansMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageDecreaseInRevenuesDueToChangeInForeignExchangeRates" id="tri_PercentageDecreaseInRevenuesDueToChangeInForeignExchangeRates" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfCashAndCashEquivalentsAtAMinusOrAboveRatedInstitutions" id="tri_PercentageOfCashAndCashEquivalentsAtAMinusOrAboveRatedInstitutions" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfDefinedBenefitObligationAttributableToActiveEmployees" id="tri_PercentageOfDefinedBenefitObligationAttributableToActiveEmployees" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfDefinedBenefitObligationAttributableToFormerEmployeesNotRetired" id="tri_PercentageOfDefinedBenefitObligationAttributableToFormerEmployeesNotRetired" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfDefinedBenefitObligationAttributableToParticipantsByGeography" id="tri_PercentageOfDefinedBenefitObligationAttributableToParticipantsByGeography" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfDefinedBenefitObligationAttributableToRetiredEmployees" id="tri_PercentageOfDefinedBenefitObligationAttributableToRetiredEmployees" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfDiscountAllowedForEmployeeStockPurchasePlan" id="tri_PercentageOfDiscountAllowedForEmployeeStockPurchasePlan" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfFairValueForEachCashGeneratingUnitInExcessOfCarryingValue" id="tri_PercentageOfFairValueForEachCashGeneratingUnitInExcessOfCarryingValue" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfOtherEquityInstrumentVested" id="tri_PercentageOfOtherEquityInstrumentVested" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfOwnershipHeldByRelatedParty" id="tri_PercentageOfOwnershipHeldByRelatedParty" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfParticipantsInDefinedBenefitsPlans" id="tri_PercentageOfParticipantsInDefinedBenefitsPlans" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfParticipantsInDefinedBenefitsPlansMember" id="tri_PercentageOfParticipantsInDefinedBenefitsPlansMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfTradeReceivable" id="tri_PercentageOfTradeReceivable" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfValuationTechniques" id="tri_PercentageOfValuationTechniques" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfVotingEquityInterestsExpectedToBeRetained" id="tri_PercentageOfVotingEquityInterestsExpectedToBeRetained" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfVotingEquityInterestsExpectedToSell" id="tri_PercentageOfVotingEquityInterestsExpectedToSell" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PerformanceRestrictedShareUnitMember" id="tri_PerformanceRestrictedShareUnitMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PlanExpenseBenefitRecognizedInIncomeStatementAbstract" id="tri_PlanExpenseBenefitRecognizedInIncomeStatementAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PledgedAssets" id="tri_PledgedAssets" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="Position1Axis" id="tri_Position1Axis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem"/>
  <element name="Position1Domain" id="tri_Position1Domain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PostEmploymentBenefitExpense" id="tri_PostEmploymentBenefitExpense" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PotentialIncomeTaxLiabilityIncludingInterest" id="tri_PotentialIncomeTaxLiabilityIncludingInterest" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PotentialRepurchaseOfCommonShares" id="tri_PotentialRepurchaseOfCommonShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PreferenceSharesDividendsIncomeStatementImpact" id="tri_PreferenceSharesDividendsIncomeStatementImpact" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PrepaidExpensesAndOtherCurrentAssetsAbstract" id="tri_PrepaidExpensesAndOtherCurrentAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PrepaidExpensesAndOtherCurrentAssetsRecognisedAsOfAcquisitionDate" id="tri_PrepaidExpensesAndOtherCurrentAssetsRecognisedAsOfAcquisitionDate" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PrimaryDebtInstrumentsMember" id="tri_PrimaryDebtInstrumentsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PrintMember" id="tri_PrintMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PrivateShareRepurchaseAgreementMember" id="tri_PrivateShareRepurchaseAgreementMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProfitLossAfterTaxDiscontinuedOperations" id="tri_ProfitLossAfterTaxDiscontinuedOperations" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProfitLossFromContinuingOperationsBeforeIncomeTaxExpenseOrIncomeAndBeforeTheCompanyShareOfPosttaxEarningsOrLossesFromEquitymethodInvestments" id="tri_ProfitLossFromContinuingOperationsBeforeIncomeTaxExpenseOrIncomeAndBeforeTheCompanyShareOfPosttaxEarningsOrLossesFromEquitymethodInvestments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProvisionForUncertainTaxPositions" id="tri_ProvisionForUncertainTaxPositions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProvisionsAndOtherNonCurrentLiabilities" id="tri_ProvisionsAndOtherNonCurrentLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PurchaseOfAnnuityInsuranceContractLiability" id="tri_PurchaseOfAnnuityInsuranceContractLiability" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="QuarterlyDividendMember" id="tri_QuarterlyDividendMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="QuotedPlanAssetsMember" id="tri_QuotedPlanAssetsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RangeFourMember" id="tri_RangeFourMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RangeOneMember" id="tri_RangeOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RangeThreeMember" id="tri_RangeThreeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RangeTwoMember" id="tri_RangeTwoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RealEstateExpense" id="tri_RealEstateExpense" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReductionOfFairValueAdjustmentsForHedges" id="tri_ReductionOfFairValueAdjustmentsForHedges" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RepurchasesOfCommonShares" id="tri_RepurchasesOfCommonShares" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RestOfWorldMember" id="tri_RestOfWorldMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReutersMember" id="tri_ReutersMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReutersPensionFundMember" id="tri_ReutersPensionFundMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RevolvingCreditFacility1Member" id="tri_RevolvingCreditFacility1Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SalariesCommissionAndAllowances" id="tri_SalariesCommissionAndAllowances" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfChangesInDefinedBenefitObligationExplanatory" id="tri_ScheduleOfChangesInDefinedBenefitObligationExplanatory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SeriesIICumulativeRedeemablePreferenceShareCapitalMember" id="tri_SeriesIICumulativeRedeemablePreferenceShareCapitalMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareAppreciationRightsMember" id="tri_ShareAppreciationRightsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationExpenseIncomeRelatingToRevaluationOfWithholdingTaxes" id="tri_ShareBasedCompensationExpenseIncomeRelatingToRevaluationOfWithholdingTaxes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareRedemptionPrice" id="tri_ShareRedemptionPrice" type="num:perShareItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SharesIssuedOrPurchasedByTypeAxis" id="tri_SharesIssuedOrPurchasedByTypeAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem"/>
  <element name="SharesIssuedOrPurchasedByTypeDomain" id="tri_SharesIssuedOrPurchasedByTypeDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SharesIssuedUnderDividendReinvestmentPlan" id="tri_SharesIssuedUnderDividendReinvestmentPlan" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SharesRepurchasedAveragePricePerShare" id="tri_SharesRepurchasedAveragePricePerShare" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="Short1Member" id="tri_Short1Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SixPointFiveZeroNotesDueTwoThousandEighteenMember" id="tri_SixPointFiveZeroNotesDueTwoThousandEighteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StandardAndPoorMember" id="tri_StandardAndPoorMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StatedCapitalMember" id="tri_StatedCapitalMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StateNetOperatingLossesMember" id="tri_StateNetOperatingLossesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockIncentivePlanMember" id="tri_StockIncentivePlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockOption1Member" id="tri_StockOption1Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockOptionsAndStockAppreciationRightsMember" id="tri_StockOptionsAndStockAppreciationRightsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SummaryOfHypotheticalChangeInForeignCurrencyExchangeRatesOnEarningsAbstract" id="tri_SummaryOfHypotheticalChangeInForeignCurrencyExchangeRatesOnEarningsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SummaryOfHypotheticalChangeInForeignCurrencyExchangeRatesOnEarningsLineItems" id="tri_SummaryOfHypotheticalChangeInForeignCurrencyExchangeRatesOnEarningsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SummaryOfWeightedAverageActuarialAssumptionsExplanatory" id="tri_SummaryOfWeightedAverageActuarialAssumptionsExplanatory" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SupplementalCashFlowInformation1Abstract" id="tri_SupplementalCashFlowInformation1Abstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SupplementaryPensionSchemeMember" id="tri_SupplementaryPensionSchemeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TaxAndAccountingMember" id="tri_TaxAndAccountingMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TaxationInformationAxis" id="tri_TaxationInformationAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem"/>
  <element name="TaxationInformationMember" id="tri_TaxationInformationMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TaxEffectOfNonControllingInterests" id="tri_TaxEffectOfNonControllingInterests" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TaxEffectOfWithholdingTaxes" id="tri_TaxEffectOfWithholdingTaxes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TaxLossesCarryforward" id="tri_TaxLossesCarryforward" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TaxLossesForWhichNoBenefitIsRecognized" id="tri_TaxLossesForWhichNoBenefitIsRecognized" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TaxLossesMember" id="tri_TaxLossesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TaxValueOperatingLosses" id="tri_TaxValueOperatingLosses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TenPercentageWeakeningInForeignCurrencyVsUsMember" id="tri_TenPercentageWeakeningInForeignCurrencyVsUsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TermLoanFacilityMember" id="tri_TermLoanFacilityMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TextBlock1Abstract" id="tri_TextBlock1Abstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TheThomsonCorporationPLCPensionSchemeMember" id="tri_TheThomsonCorporationPLCPensionSchemeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ThomsonReutersGroupPensionPlanMember" id="tri_ThomsonReutersGroupPensionPlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ThreePointEightFiveNotesDueTwoThousandTwentyFourMember" id="tri_ThreePointEightFiveNotesDueTwoThousandTwentyFourMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ThreePointNineFiveNotesDueTwoThousandTwentyOneMember" id="tri_ThreePointNineFiveNotesDueTwoThousandTwentyOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ThreePointThreeFiveNotesDueTwoThousandTwentySixMember" id="tri_ThreePointThreeFiveNotesDueTwoThousandTwentySixMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ThreePointThreeSixNineNotesDueTwoThousandNineteenMember" id="tri_ThreePointThreeSixNineNotesDueTwoThousandNineteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ThreePointThreeZeroNineNotesDueTwoThousandTwentyOneMember" id="tri_ThreePointThreeZeroNineNotesDueTwoThousandTwentyOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ThreeXsqAssociatesMember" id="tri_ThreeXsqAssociatesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TimeBasedRestrictedShareUnitMember" id="tri_TimeBasedRestrictedShareUnitMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TotalAdjustmentsForDecreaseIncreaseInWorkingCapitalAndOtherItems" id="tri_TotalAdjustmentsForDecreaseIncreaseInWorkingCapitalAndOtherItems" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TotalCapitalMember" id="tri_TotalCapitalMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TotalFutureInterestOutflows" id="tri_TotalFutureInterestOutflows" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TradeAndOtherReceivablesCarryingValue" id="tri_TradeAndOtherReceivablesCarryingValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TradeNamesFiniteUsefulLifeMember" id="tri_TradeNamesFiniteUsefulLifeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TradeNamesIndefiniteUsefulLifeMember" id="tri_TradeNamesIndefiniteUsefulLifeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TradeReceivablesCarryingValue" id="tri_TradeReceivablesCarryingValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TradeReceivablesRecognisedAsOfAcquisitionDate" id="tri_TradeReceivablesRecognisedAsOfAcquisitionDate" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TRGPAndLargeUKPlansMember" id="tri_TRGPAndLargeUKPlansMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TypeOneMember" id="tri_TypeOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TypeThreeMember" id="tri_TypeThreeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TypeTwoMember" id="tri_TypeTwoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UncertainTaxPositions" id="tri_UncertainTaxPositions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UndiscountedCashFlowMember" id="tri_UndiscountedCashFlowMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UndistributedEarningsOfForeignSubsidiariesCurrent" id="tri_UndistributedEarningsOfForeignSubsidiariesCurrent" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UnfundedPlansMember" id="tri_UnfundedPlansMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UnitedKingdomMember" id="tri_UnitedKingdomMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UnitedStatesMember" id="tri_UnitedStatesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UnquotedPlanAssetsMember" id="tri_UnquotedPlanAssetsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UnrecognizedPlanAssets" id="tri_UnrecognizedPlanAssets" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="USDollarMember" id="tri_USDollarMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UsTaxCutsAndJobsActTwoThousandSeventeenMember" id="tri_UsTaxCutsAndJobsActTwoThousandSeventeenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="Utilization" id="tri_Utilization" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="VestingPeriodOfOtherEquityInstrument" id="tri_VestingPeriodOfOtherEquityInstrument" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WeightedAverageNumberOfSharesBasic" id="tri_WeightedAverageNumberOfSharesBasic" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WeightedAverageNumberOfVestedDSUs" id="tri_WeightedAverageNumberOfVestedDSUs" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WestMember" id="tri_WestMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WithholdingTaxObligationsReclassifiedToContributedSurplus" id="tri_WithholdingTaxObligationsReclassifiedToContributedSurplus" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WoodbridgeMember" id="tri_WoodbridgeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ZeroPointEightSevenFiveNotesDueTwoThousandSixteenMember" id="tri_ZeroPointEightSevenFiveNotesDueTwoThousandSixteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
</schema>
