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| <link:definition> 9954501 - Disclosure - Investments Investment Income (Detail) </link:definition> |
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| | | <link:roleType id="InvestmentsAdditionalInformationDetail" roleURI="http://www.unum.com/role/InvestmentsAdditionalInformationDetail"> |
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| | | <link:roleType id="DerivativeFinancialInstrumentsNatureandAmountofCollateralReceivedFromandPostedToOurDerivativeCounterpartiesDetails" roleURI="http://www.unum.com/role/DerivativeFinancialInstrumentsNatureandAmountofCollateralReceivedFromandPostedToOurDerivativeCounterpartiesDetails"> |
| <link:definition> 9954504 - Disclosure - Derivative Financial Instruments Nature and Amount of Collateral Received From and Posted To Our Derivative Counterparties (Details) </link:definition> |
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| | | <link:roleType id="DerivativeFinancialInstrumentsFairValueHedgesCarryingAmountofHedgedAssetsandLiabilitiesandCumulativeBasisAdjustmentsDetails" roleURI="http://www.unum.com/role/DerivativeFinancialInstrumentsFairValueHedgesCarryingAmountofHedgedAssetsandLiabilitiesandCumulativeBasisAdjustmentsDetails"> |
| <link:definition> 9954505 - Disclosure - Derivative Financial Instruments Fair Value Hedges Carrying Amount of Hedged Assets and Liabilities and Cumulative Basis Adjustments (Details) </link:definition> |
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| | | <link:roleType id="DerivativeFinancialInstrumentsLocationofGainsandLossesDesignatedasHedgingInstrumentsConsolidatedStatementsofIncomeDetails" roleURI="http://www.unum.com/role/DerivativeFinancialInstrumentsLocationofGainsandLossesDesignatedasHedgingInstrumentsConsolidatedStatementsofIncomeDetails"> |
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| | | <link:roleType id="LocationofGainsandLossesonDerivativeInstrumentsDesignatedasCashFlowHedgingInstrumentsDetail" roleURI="http://www.unum.com/role/LocationofGainsandLossesonDerivativeInstrumentsDesignatedasCashFlowHedgingInstrumentsDetail"> |
| <link:definition> 9954508 - Disclosure - Location of Gains and Losses on Derivative Instruments Designated as Cash Flow Hedging Instruments (Detail) </link:definition> |
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| | | <link:roleType id="GainsandLossesonDerivativesNotDesignatedasHedgingInstrumentsDetail" roleURI="http://www.unum.com/role/GainsandLossesonDerivativesNotDesignatedasHedgingInstrumentsDetail"> |
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| | | <link:roleType id="DerivativeFinancialInstrumentsAdditionalInformationDetail" roleURI="http://www.unum.com/role/DerivativeFinancialInstrumentsAdditionalInformationDetail"> |
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| <link:definition> 9954511 - Disclosure - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) </link:definition> |
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| | | <link:roleType id="ScheduleofReclassificationsOutofAccumulatedOtherComprehensiveIncomeDetails" roleURI="http://www.unum.com/role/ScheduleofReclassificationsOutofAccumulatedOtherComprehensiveIncomeDetails"> |
| <link:definition> 9954512 - Disclosure - Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Details) </link:definition> |
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| | | <link:roleType id="LiabilityforFuturePolicyBenefitActivityDetails" roleURI="http://www.unum.com/role/LiabilityforFuturePolicyBenefitActivityDetails"> |
| <link:definition> 9954513 - Disclosure - Liability for Future Policy Benefit Activity (Details) </link:definition> |
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| | | <link:roleType id="PolicyholderAccountBalanceDetails" roleURI="http://www.unum.com/role/PolicyholderAccountBalanceDetails"> |
| <link:definition> 9954514 - Disclosure - Policyholder Account Balance (Details) </link:definition> |
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| | | <link:roleType id="PolicyholderAccountBalanceGuaranteedMinimumCreditingDetails" roleURI="http://www.unum.com/role/PolicyholderAccountBalanceGuaranteedMinimumCreditingDetails"> |
| <link:definition> 9954515 - Disclosure - Policyholder Account Balance, Guaranteed Minimum Crediting (Details) </link:definition> |
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| | | <link:roleType id="DeferredPolicyAcquisitionCostsDetails" roleURI="http://www.unum.com/role/DeferredPolicyAcquisitionCostsDetails"> |
| <link:definition> 9954516 - Disclosure - Deferred Policy Acquisition Costs (Details) </link:definition> |
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| | | <link:roleType id="PremiumIncomebyMajorLineofBusinesswithinEachSegmentDetail" roleURI="http://www.unum.com/role/PremiumIncomebyMajorLineofBusinesswithinEachSegmentDetail"> |
| <link:definition> 9954517 - Disclosure - Premium Income by Major Line of Business within Each Segment (Detail) </link:definition> |
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| <link:definition> 9954518 - Disclosure - Selected Operating Statement Data by Segment (Detail) </link:definition> |
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| <link:definition> 9954520 - Disclosure - Reconciliation of Total Revenue and Income Before Income Tax to Operating Revenue and Operating Income (Detail) </link:definition> |
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| <link:definition> 9954522 - Disclosure - Employee Benefit Plans Net Periodic Benefit Cost (Detail) </link:definition> |
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| <xs:element id="unm_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsUnrealizedLossPositionGrossLoss" abstract="false" name="AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsUnrealizedLossPositionGrossLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_SouthAtlanticMember" abstract="true" name="SouthAtlanticMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_PrivatePlacementFixedMaturityMember" abstract="true" name="PrivatePlacementFixedMaturityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_FederalHomeLoanBankCarryingValueofCommonStockCollateralPostedandAdvancesLineItems" abstract="true" name="FederalHomeLoanBankCarryingValueofCommonStockCollateralPostedandAdvancesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_DeferralOfAcquisitionCosts" abstract="false" name="DeferralOfAcquisitionCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom1200And1500Member" abstract="true" name="PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom1200And1500Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_DerivativeFinancialInstrumentsAdditionalInformationAbstract" abstract="true" name="DerivativeFinancialInstrumentsAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_HeirarchyLevelCombinationDomain" abstract="true" name="HeirarchyLevelCombinationDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_DisclosureMortgageLoansByPropertyTypeAbstract" abstract="true" name="DisclosureMortgageLoansByPropertyTypeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_SupplementalandVoluntaryInsuranceMember" abstract="true" name="SupplementalandVoluntaryInsuranceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_WestSouthCentralMember" abstract="true" name="WestSouthCentralMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_StockholdersEquityAndEarningsPerCommonShareAdditionalInformationAbstract" abstract="true" name="StockholdersEquityAndEarningsPerCommonShareAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearUnrealizedLossPositionGrossLoss" abstract="false" name="AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearUnrealizedLossPositionGrossLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_OffBalanceSheetAmountMember" abstract="true" name="OffBalanceSheetAmountMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_DistributionOfMaturityDatesForFixedMaturitySecuritiesAbstract" abstract="true" name="DistributionOfMaturityDatesForFixedMaturitySecuritiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_OtherComprehensiveIncomeLossNetGainOnHedgesAdjustmentTax" abstract="false" name="OtherComprehensiveIncomeLossNetGainOnHedgesAdjustmentTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_CumulativeEffectOnOpeningBalanceInPeriodOfAdoptionTable" abstract="true" name="CumulativeEffectOnOpeningBalanceInPeriodOfAdoptionTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/> |
| <xs:element id="unm_FairValueInputsOtherThanLevel1Member" abstract="true" name="FairValueInputsOtherThanLevel1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_AccidentalDeathDismembermentMember" abstract="true" name="AccidentalDeathDismembermentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_TaxCreditPartnershipMember" abstract="true" name="TaxCreditPartnershipMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_PrivateEquityFundTypeDomain" abstract="true" name="PrivateEquityFundTypeDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_FinancingReceivableOriginationPeriodAxis" abstract="true" name="FinancingReceivableOriginationPeriodAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="unm_SignificantTransactionDomain" abstract="true" name="SignificantTransactionDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_PrivateEquityFundTypeAxis" abstract="true" name="PrivateEquityFundTypeAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsUnrealizedLossPositionGrossLoss" abstract="false" name="AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsUnrealizedLossPositionGrossLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_FairValueAssetsandLiabilitiesComponentDomain" abstract="true" name="FairValueAssetsandLiabilitiesComponentDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_CumulativeEffectOnOpeningBalanceInPeriodOfAdoptionLineItems" abstract="true" name="CumulativeEffectOnOpeningBalanceInPeriodOfAdoptionLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_TypeOfCommonStockRepurchaseDomain" abstract="true" name="TypeOfCommonStockRepurchaseDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_InvestmentGainsAndLossesReportedInConsolidatedStatementsOfIncomeAbstract" abstract="true" name="InvestmentGainsAndLossesReportedInConsolidatedStatementsOfIncomeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesDebtMaturitiesFairValueGrossSubtotal" abstract="false" name="AvailableForSaleSecuritiesDebtMaturitiesFairValueGrossSubtotal" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_InputMeasurementSpreadOfSwapCurveMember" abstract="true" name="InputMeasurementSpreadOfSwapCurveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_BBCreditRatingMember" abstract="true" name="BBCreditRatingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearUnrealizedGainPositionGrossGain" abstract="false" name="AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearUnrealizedGainPositionGrossGain" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_RepurchaseProgramAuthorizedInFebruary2023Member" abstract="true" name="RepurchaseProgramAuthorizedInFebruary2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="unm_UnfundedMortgageLoanCommitmentsMember" abstract="true" name="UnfundedMortgageLoanCommitmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_GroupLongTermDisabilityMember" abstract="true" name="GroupLongTermDisabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_BBBCreditRatingMember" abstract="true" name="BBBCreditRatingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_PolicyholderAccountBalanceBeforeReservesInExcessOfAccountBalance" abstract="false" name="PolicyholderAccountBalanceBeforeReservesInExcessOfAccountBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_PricingServiceMember" abstract="true" name="PricingServiceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_PercentageOfLoanPortfolio" abstract="false" name="PercentageOfLoanPortfolio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="unm_ScheduleOfFinancialInstrumentAndDerivativeOffsettingTableTextBlock" abstract="false" name="ScheduleOfFinancialInstrumentAndDerivativeOffsettingTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="unm_CreditExposureDomain" abstract="true" name="CreditExposureDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_VoluntaryBenefitsMember" abstract="true" name="VoluntaryBenefitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_InterestRateDerivativeContractTypeDomain" abstract="true" name="InterestRateDerivativeContractTypeDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_SharesRepurchasedCommissions" abstract="false" name="SharesRepurchasedCommissions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_DebtSecuritiesAvailableForSaleAmortizedCostNetOfAllowanceForCreditLossesFiscalYearMaturityAbstract" abstract="true" name="DebtSecuritiesAvailableForSaleAmortizedCostNetOfAllowanceForCreditLossesFiscalYearMaturityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_OriginatedFourYearsBeforeLastFiscalYearMember" abstract="true" name="OriginatedFourYearsBeforeLastFiscalYearMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_InvestmentsAdditionalInformationAbstract" abstract="true" name="InvestmentsAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesUnrealizedLossPositionGrossLoss" abstract="true" name="AvailableForSaleSecuritiesUnrealizedLossPositionGrossLoss" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_GroupShortTermDisabilityMember" abstract="true" name="GroupShortTermDisabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_RemovalOfShadowAdjustmentsLFPB" abstract="false" name="RemovalOfShadowAdjustmentsLFPB" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_MiscellaneousLongTermInvestments" abstract="false" name="MiscellaneousLongTermInvestments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_LocationOfGainsAndLossesOnDerivativeFinancialInstrumentsDesignatedAsCashFlowHedgingInstrumentsAbstract" abstract="true" name="LocationOfGainsAndLossesOnDerivativeFinancialInstrumentsDesignatedAsCashFlowHedgingInstrumentsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_OtherComprehensiveIncomeLossNetGainOnHedgesAdjustmentNetOfTax" abstract="false" name="OtherComprehensiveIncomeLossNetGainOnHedgesAdjustmentNetOfTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_InterestRateDerivativesContractTypeAxis" abstract="true" name="InterestRateDerivativesContractTypeAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="unm_LoanToValueRatioAbove75To85PercentMember" abstract="true" name="LoanToValueRatioAbove75To85PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_FairValueAssetsAndLiabilitiesComponentsAxis" abstract="true" name="FairValueAssetsAndLiabilitiesComponentsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="unm_NumberOfFixedMaturitySecuritiesInUnrealizedLossPositionContinuouslyForOverOneYear" abstract="false" name="NumberOfFixedMaturitySecuritiesInUnrealizedLossPositionContinuouslyForOverOneYear" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/> |
| <xs:element id="unm_OriginatedInFiscalYearBeforeLatestFiscalYearMember" abstract="true" name="OriginatedInFiscalYearBeforeLatestFiscalYearMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_OtherProductsMember" abstract="true" name="OtherProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_AvailableforsaleSecuritiesDebtMaturitiesUnrealizedGainPositionGrossGain" abstract="false" name="AvailableforsaleSecuritiesDebtMaturitiesUnrealizedGainPositionGrossGain" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_OriginatedInCurrentFiscalYearMember" abstract="true" name="OriginatedInCurrentFiscalYearMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_ClosedBlockIndividualDisabilityReinsuranceTransactionMember" abstract="true" name="ClosedBlockIndividualDisabilityReinsuranceTransactionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostGrossSubtotalNet" abstract="false" name="AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostGrossSubtotalNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_ShareRepurchasesExciseTax" abstract="false" name="ShareRepurchasesExciseTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateUnrealizedLossPositionGrossLoss" abstract="false" name="AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateUnrealizedLossPositionGrossLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_RealAssetsMember" abstract="true" name="RealAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_OtherInvestmentsGrossRealizedLosses" abstract="false" name="OtherInvestmentsGrossRealizedLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_PolicyAndContractBenefits" abstract="false" name="PolicyAndContractBenefits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_GroupLifeMember" abstract="true" name="GroupLifeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_NewEnglandMember" abstract="true" name="NewEnglandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceAndNetOfTaxExpenseBenefit" abstract="false" name="ChangeInAdjustmentToDeferredAcquisitionCostsAndReservesForFuturePolicyAndContractBenefitsNetOfReinsuranceAndNetOfTaxExpenseBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_OriginatedFiveOrMoreYearsBeforeLastFiscalYearMember" abstract="true" name="OriginatedFiveOrMoreYearsBeforeLastFiscalYearMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_AACreditRatingMember" abstract="true" name="AACreditRatingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_MiddleAtlanticMember" abstract="true" name="MiddleAtlanticMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsUnrealizedLossPositionGrossLoss" abstract="false" name="AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsUnrealizedLossPositionGrossLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_AdjustedOperatingRevenue" abstract="false" name="AdjustedOperatingRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_FinancialInstrumentsFinancialAssetsFairValueDisclosureCarryingValue" abstract="false" name="FinancialInstrumentsFinancialAssetsFairValueDisclosureCarryingValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_OriginatedThreeYearsBeforeLastFiscalYearMember" abstract="true" name="OriginatedThreeYearsBeforeLastFiscalYearMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughFiveNet" abstract="false" name="DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughFiveNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_MiscellaneousLongTermInvestmentsCarryingValue" abstract="false" name="MiscellaneousLongTermInvestmentsCarryingValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsUnrealizedGainPositionGrossGain" abstract="false" name="AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsUnrealizedGainPositionGrossGain" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_CreditRatingMember" abstract="true" name="CreditRatingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_SignificantTransactionAxis" abstract="true" name="SignificantTransactionAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsUnrealizedGainPositionGrossGain" abstract="false" name="AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsUnrealizedGainPositionGrossGain" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_RepurchaseProgramAuthorizedInDecember2022Member" abstract="true" name="RepurchaseProgramAuthorizedInDecember2022Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="unm_NetIncreaseDecreaseInPayablesForCollateralOnInvestments" abstract="false" name="NetIncreaseDecreaseInPayablesForCollateralOnInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesUnrealizedGainPositionGrossGain" abstract="true" name="AvailableForSaleSecuritiesUnrealizedGainPositionGrossGain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYear10Net" abstract="false" name="DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYear10Net" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_DebtSecuritiesAvailableForSaleMaturityWithoutSingleMaturityDateAmortizedCostNet" abstract="false" name="DebtSecuritiesAvailableForSaleMaturityWithoutSingleMaturityDateAmortizedCostNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_InvestmentIncomeAbstract" abstract="true" name="InvestmentIncomeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_LoanToValueRatioTotalMember" abstract="true" name="LoanToValueRatioTotalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateYearOneNet" abstract="false" name="DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateYearOneNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_AcceleratedShareRepurchaseAgreementMember" abstract="true" name="AcceleratedShareRepurchaseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_AvailableforSaleDebtSecuritiesbyExternalCreditRatingTableTextBlock" abstract="false" name="AvailableforSaleDebtSecuritiesbyExternalCreditRatingTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="unm_LiabilityForFuturePolicyBenefitBeforeReinsuranceAfterOther" abstract="false" name="LiabilityForFuturePolicyBenefitBeforeReinsuranceAfterOther" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_FederalHomeLoanBankCarryingValueofCommonStockCollateralPostedandAdvancesTable" abstract="true" name="FederalHomeLoanBankCarryingValueofCommonStockCollateralPostedandAdvancesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/> |
| <xs:element id="unm_PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0600And0899Member" abstract="true" name="PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0600And0899Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesPercentOfTotalFairValue" abstract="false" name="AvailableForSaleSecuritiesPercentOfTotalFairValue" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="unm_PolicyholderAccountBalanceAfterReinsuranceRecoverable" abstract="false" name="PolicyholderAccountBalanceAfterReinsuranceRecoverable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_MountainMember" abstract="true" name="MountainMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_PacificMember" abstract="true" name="PacificMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_WestNorthCentralMember" abstract="true" name="WestNorthCentralMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_NotRedeemableMember" abstract="true" name="NotRedeemableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_FairValueHedgesCarryingAmountofHedgedAssetsandLiabilitiesandCumulativeBasisAdjustmentsTableTextBlock" abstract="false" name="FairValueHedgesCarryingAmountofHedgedAssetsandLiabilitiesandCumulativeBasisAdjustmentsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="unm_FederalHomeLoanBankCommonStockCarryingAmountsAmountsPostedandAdvancesReceivedTableTextBlock" abstract="false" name="FederalHomeLoanBankCommonStockCarryingAmountsAmountsPostedandAdvancesReceivedTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="unm_OtherIncreaseDecrease" abstract="false" name="OtherIncreaseDecrease" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_EastSouthCentralMember" abstract="true" name="EastSouthCentralMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_AmortizationOfPrepaidReinsurancePremium" abstract="false" name="AmortizationOfPrepaidReinsurancePremium" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0300And0599Member" abstract="true" name="PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0300And0599Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_OutstandingRestrictedStockAndStockSuccessUnitGrantPricesUpperLimit" abstract="false" name="OutstandingRestrictedStockAndStockSuccessUnitGrantPricesUpperLimit" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/> |
| <xs:element id="unm_RemovalOfShadowAdjustmentsDAC" abstract="false" name="RemovalOfShadowAdjustmentsDAC" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesDebtMaturitiesUnrealizedGainPositionGrossLossGrossSubtotal" abstract="false" name="AvailableForSaleSecuritiesDebtMaturitiesUnrealizedGainPositionGrossLossGrossSubtotal" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateUnrealizedGainPositionGrossGain" abstract="false" name="AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateUnrealizedGainPositionGrossGain" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_ScheduleOfParticipatingMortgageLoansByInternalCreditRatingAndLoanToValueTableTextBlock" abstract="false" name="ScheduleOfParticipatingMortgageLoansByInternalCreditRatingAndLoanToValueTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="unm_IndividualDisabilityInsuranceMember" abstract="true" name="IndividualDisabilityInsuranceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_IndividualDisabilityMember" abstract="true" name="IndividualDisabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_Quarterly90DaysNoticeMember" abstract="true" name="Quarterly90DaysNoticeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_LoanToValueRatioBelowOrEqualTo65PercentMember" abstract="true" name="LoanToValueRatioBelowOrEqualTo65PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_EastNorthCentralMember" abstract="true" name="EastNorthCentralMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_PrivateEquityLimitedPartnershipMember" abstract="true" name="PrivateEquityLimitedPartnershipMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_DebtSecuritiesAvailableforsaleUnrealizedGainLossFairValueDomain" abstract="true" name="DebtSecuritiesAvailableforsaleUnrealizedGainLossFairValueDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_CollateralRequirementsMinimumPercentageCollateralToFairValueOfSecuritiesLoanedOrPurchasedUnderRepurchaseAgreements" abstract="false" name="CollateralRequirementsMinimumPercentageCollateralToFairValueOfSecuritiesLoanedOrPurchasedUnderRepurchaseAgreements" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="unm_CreditExposureMember" abstract="true" name="CreditExposureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_ClosedBlockMember" abstract="true" name="ClosedBlockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_GroupLifeAndADDMember" abstract="true" name="GroupLifeAndADDMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_HeirarchyLevelCombinationAxis" abstract="true" name="HeirarchyLevelCombinationAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="unm_NetReserveChangeRelatedToReserveAssumptionUpdatesBeforeTax" abstract="false" name="NetReserveChangeRelatedToReserveAssumptionUpdatesBeforeTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_OtherObservableMarketDataMember" abstract="true" name="OtherObservableMarketDataMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesUnrealizedLossPositionFairValueMember" abstract="true" name="AvailableForSaleSecuritiesUnrealizedLossPositionFairValueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYear5Through10Net" abstract="false" name="DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYear5Through10Net" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_NatureandAmountofCollateralReceivedFromandPostedToDerivativeCounterpartyTableTextBlock" abstract="false" name="NatureandAmountofCollateralReceivedFromandPostedToDerivativeCounterpartyTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="unm_CostRelatedToEarlyRetirementOfDebt" abstract="false" name="CostRelatedToEarlyRetirementOfDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_CreditExposureAxis" abstract="true" name="CreditExposureAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="unm_EffectOfChangeInDiscountRateAssumptions" abstract="false" name="EffectOfChangeInDiscountRateAssumptions" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_RealEstateReclassificationToHeldForSaleCarryingValue" abstract="false" name="RealEstateReclassificationToHeldForSaleCarryingValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_DebtSecuritiesAvailableforsalePrivate" abstract="false" name="DebtSecuritiesAvailableforsalePrivate" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_LoanToValueRatioAbove85PercentMember" abstract="true" name="LoanToValueRatioAbove85PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0500And0600Member" abstract="true" name="PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0500And0600Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0900And1199Member" abstract="true" name="PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0900And1199Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_FixedMaturitySecuritiesInUnrealizedLossPositionPercentOfTotal" abstract="false" name="FixedMaturitySecuritiesInUnrealizedLossPositionPercentOfTotal" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="unm_TotalFinancialInstrumentLiabilitiesNotCarriedatFairValue" abstract="false" name="TotalFinancialInstrumentLiabilitiesNotCarriedatFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_InvestmentIncomeOnPfaAssets" abstract="false" name="InvestmentIncomeOnPfaAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_RedemptionTermAxis" abstract="true" name="RedemptionTermAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesUnrealizedLossPositionGrossLossSubtotal" abstract="false" name="AvailableForSaleSecuritiesUnrealizedLossPositionGrossLossSubtotal" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_UnumInternationalMember" abstract="true" name="UnumInternationalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_OtherInvestmentsGrossRealizedGains" abstract="false" name="OtherInvestmentsGrossRealizedGains" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_LiabilityForFuturePolicyBenefitBeforeReinsuranceBeforeOther" abstract="false" name="LiabilityForFuturePolicyBenefitBeforeReinsuranceBeforeOther" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_DistributionbyExternalCreditRatingforFixedMaturitySecuritiesAbstract" abstract="true" name="DistributionbyExternalCreditRatingforFixedMaturitySecuritiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsUnrealizedGainPositionGrossGain" abstract="false" name="AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsUnrealizedGainPositionGrossGain" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_UnumUsMember" abstract="true" name="UnumUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_LoanToValueRatioAbove65To75PercentMember" abstract="true" name="LoanToValueRatioAbove65To75PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_UnumPolandMember" abstract="true" name="UnumPolandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_PolicyLoansCededtoReinsurers" abstract="false" name="PolicyLoansCededtoReinsurers" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_OffsettingForDerivativesAndSecuritiesLendingBalancesAbstract" abstract="true" name="OffsettingForDerivativesAndSecuritiesLendingBalancesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_FairValuesOfFinancialInstrumentsAdditionalInformationAbstract" abstract="true" name="FairValuesOfFinancialInstrumentsAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_FinancialInstrumentsFinancialAssetsFairValueDisclosureTotal" abstract="false" name="FinancialInstrumentsFinancialAssetsFairValueDisclosureTotal" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_PolicyholderAccountBalanceReservesInExcessOfAccountBalance" abstract="false" name="PolicyholderAccountBalanceReservesInExcessOfAccountBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="unm_PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400And0500Member" abstract="true" name="PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400And0500Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_LocationAndFairValuesOfDerivativeFinancialInstrumentsAbstract" abstract="true" name="LocationAndFairValuesOfDerivativeFinancialInstrumentsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="unm_RedemptionTermDomain" abstract="true" name="RedemptionTermDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="unm_TypeOfCommonStockRepurchaseAxis" abstract="true" name="TypeOfCommonStockRepurchaseAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="unm_DebtSecuritiesAvailableforsaleUnrealizedGainLossFairValueAxis" abstract="true" name="DebtSecuritiesAvailableforsaleUnrealizedGainLossFairValueAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="unm_OtherPolicyholdersFunds" abstract="false" name="OtherPolicyholdersFunds" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| </xs:schema> |