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| <link:definition> 2434405 - Disclosure - Fair Value (Reconciliation of Assets Measured at Fair Value on a Recurring Basis Using Level 3 Inputs) (Details) </link:definition> |
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| <link:definition> 2334301 - Disclosure - Fair Value (Tables) </link:definition> |
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| <link:definition> 2424404 - Disclosure - Goodwill and Other Intangible Assets Future Amortization Expense relating to Intangible Assets (Details) </link:definition> |
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| <link:definition> 2424403 - Disclosure - Goodwill and Other Intangible Assets Goodwill Rollforward (Details) </link:definition> |
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| <link:definition> 2124100 - Disclosure - Goodwill and Other Intangible Assets (Notes) </link:definition> |
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| <link:definition> 2324302 - Disclosure - Goodwill and Other Intangible Assets (Tables) </link:definition> |
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| <link:definition> 2437401 - Disclosure - Health Insurance Industry Tax (Details) </link:definition> |
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| | | <link:roleType id="InvestmentsNarrativeDetails" roleURI="http://www.uhc.com/role/InvestmentsNarrativeDetails"> |
| <link:definition> 2430402 - Disclosure - Investments (Narrative) (Details) </link:definition> |
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| <link:definition> 2130100 - Disclosure - Investments (Notes) </link:definition> |
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| <link:definition> 2330301 - Disclosure - Investments (Tables) </link:definition> |
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| <link:definition> 2436402 - Disclosure - Medical Costs Reserve Development (Details) </link:definition> |
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| <link:definition> 2136100 - Disclosure - Medical Costs Reserve Development (Notes) </link:definition> |
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| <link:definition> 2336301 - Disclosure - Medical Costs Reserve Development (Tables) </link:definition> |
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| <link:definition> 2435402 - Disclosure - Medicare Part D Pharmacy Benefits (Details) </link:definition> |
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| <link:definition> 2135100 - Disclosure - Medicare Part D Pharmacy Benefits (Notes) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 2435403 - Disclosure - Medicare Part D Pharmacy Benefits Schedule of Receivables and Payables (Details) </link:definition> |
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| | | <link:roleType id="MedicarePartDPharmacyBenefitsTables" roleURI="http://www.uhc.com/role/MedicarePartDPharmacyBenefitsTables"> |
| <link:definition> 2335301 - Disclosure - Medicare Part D Pharmacy Benefits (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="SegmentFinancialInformationDetails" roleURI="http://www.uhc.com/role/SegmentFinancialInformationDetails"> |
| <link:definition> 2442403 - Disclosure - Segment Financial Information (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="SegmentFinancialInformationNarrativeDetails" roleURI="http://www.uhc.com/role/SegmentFinancialInformationNarrativeDetails"> |
| <link:definition> 2442402 - Disclosure - Segment Financial Information (Narrative) (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 2142100 - Disclosure - Segment Financial Information (Notes) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="SegmentFinancialInformationTables" roleURI="http://www.uhc.com/role/SegmentFinancialInformationTables"> |
| <link:definition> 2342301 - Disclosure - Segment Financial Information (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
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| <link:definition> 2440402 - Disclosure - Share-based Compensation Narrative (Details) </link:definition> |
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| | | <link:roleType id="ShareBasedCompensationNotes" roleURI="http://www.uhc.com/role/ShareBasedCompensationNotes"> |
| <link:definition> 2140100 - Disclosure - Share-Based Compensation (Notes) </link:definition> |
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| <link:definition> 2440405 - Disclosure - Share-Based Compensation Other Share-Based Compensation Data (Details) </link:definition> |
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| <link:definition> 2440404 - Disclosure - Share-Based Compensation (Restricted Share Activity) (Details) </link:definition> |
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| <link:definition> 2440403 - Disclosure - Share-Based Compensation (Stock Option and SAR Activity) (Details) </link:definition> |
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| <link:definition> 2340301 - Disclosure - Share-Based Compensation (Tables) </link:definition> |
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| | | <link:roleType id="ShareholdersEquityDetails" roleURI="http://www.uhc.com/role/ShareholdersEquityDetails"> |
| <link:definition> 2439402 - Disclosure - Shareholders' Equity (Details) </link:definition> |
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| <link:definition> 2139100 - Disclosure - Shareholders' Equity (Notes) </link:definition> |
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| <link:definition> 2339301 - Disclosure - Shareholders' Equity (Tables) </link:definition> |
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| <xsd:element abstract="true" id="unh_FivePointThreeSevenFivePercentSeniorUnsecuredNotesDueMarch2016Member" name="FivePointThreeSevenFivePercentSeniorUnsecuredNotesDueMarch2016Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_FivePointThreeSixPercentSeniorUnsecuredNotesDueNovember2016Member" name="FivePointThreeSixPercentSeniorUnsecuredNotesDueNovember2016Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_FiveYear30BillionCreditFacilityMember" name="FiveYear30BillionCreditFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_FloatingRateUnsecuredNotesdueJanuary2017Member" name="FloatingRateUnsecuredNotesdueJanuary2017Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_FourPointEightSevenFivePercentSeniorUnsecuredNotesDueMarch2015Member" name="FourPointEightSevenFivePercentSeniorUnsecuredNotesDueMarch2015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_FourPointSevenPercentageSeniorUnsecuredNotesDueFebruaryTwoThousandTwentyOneMember" name="FourPointSevenPercentageSeniorUnsecuredNotesDueFebruaryTwoThousandTwentyOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_FourPointSixTwoFivePercentSeniorUnsecuredNotesDueNovember2041Member" name="FourPointSixTwoFivePercentSeniorUnsecuredNotesDueNovember2041Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_FourPointThreeSevenFivePercentSeniorUnsecuredNotesDueMarch2042Member" name="FourPointThreeSevenFivePercentSeniorUnsecuredNotesDueMarch2042Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_GoodwillandOtherIntangibleAssetsAbstract" name="GoodwillandOtherIntangibleAssetsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_HealthInsuranceIndustryTaxAbstract" name="HealthInsuranceIndustryTaxAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_HealthInsuranceIndustryTaxLineItems" name="HealthInsuranceIndustryTaxLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_HealthInsuranceIndustryTaxTable" name="HealthInsuranceIndustryTaxTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element id="unh_HealthInsuranceIndustryTaxTextBlock" name="HealthInsuranceIndustryTaxTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_HealthReformAxis" name="HealthReformAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_HealthReformDomain" name="HealthReformDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_HedgedItemAxis" name="HedgedItemAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_HedgedItemDomain" name="HedgedItemDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_IndustryTaxMember" name="IndustryTaxMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_IntersegmentMember" name="IntersegmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="unh_InvestmentsAmortizedCost" name="InvestmentsAmortizedCost" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/> |
| <xsd:element id="unh_InvestmentsGrossUnrealizedGains" name="InvestmentsGrossUnrealizedGains" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/> |
| <xsd:element id="unh_InvestmentsGrossUnrealizedLosses" name="InvestmentsGrossUnrealizedLosses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/> |
| <xsd:element abstract="true" id="unh_MarketApproachAxis" name="MarketApproachAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_MarketApproachDomain" name="MarketApproachDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="unh_MaximumPercentageOfIndebtednessToTotalNetCapitalBankCovenant" name="MaximumPercentageOfIndebtednessToTotalNetCapitalBankCovenant" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant"/> |
| <xsd:element id="unh_MedicalCostDevelopmentDisclosureTextBlock" name="MedicalCostDevelopmentDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_MedicalCostsReserveDevelopmentAbstract" name="MedicalCostsReserveDevelopmentAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_MedicarePartDAbstract" name="MedicarePartDAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_MedicarePartDPharmacyBenefitsContractAxis" name="MedicarePartDPharmacyBenefitsContractAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_MedicarePartDPharmacyBenefitsContractDomain" name="MedicarePartDPharmacyBenefitsContractDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="unh_MedicarePartDPharmacyBenefitsContractTextBlock" name="MedicarePartDPharmacyBenefitsContractTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/> |
| <xsd:element id="unh_NumberOfBanksThatCompriseRevolvingBankCreditFacility" name="NumberOfBanksThatCompriseRevolvingBankCreditFacility" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/> |
| <xsd:element id="unh_NumberOfYearsOfRevolvingBankCredit" name="NumberOfYearsOfRevolvingBankCredit" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_OnePointEightSevenFivePercentSeniorUnsecuredNotesDueNovember2016Member" name="OnePointEightSevenFivePercentSeniorUnsecuredNotesDueNovember2016Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_OptumhealthMember" name="OptumhealthMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_OptuminsightMember" name="OptuminsightMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_OptumrxMember" name="OptumrxMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_OtherShareBasedCompensationDataAbstract" name="OtherShareBasedCompensationDataAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element id="unh_PeopleServed" name="PeopleServed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/> |
| <xsd:element abstract="true" id="unh_RecentTransactionsMember" name="RecentTransactionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_RecommendationbyAdministrativeLawJudgeAxis" name="RecommendationbyAdministrativeLawJudgeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_RiskShareMember" name="RiskShareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="unh_ScheduleOfOtherCurrentReceivablesAndOtherPolicyLiabilitiesAssociatedWithMedicarePartDProgramTableTextBlock" name="ScheduleOfOtherCurrentReceivablesAndOtherPolicyLiabilitiesAssociatedWithMedicarePartDProgramTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_SeniorUnsecuredFloatingRateNotesDueDecember2016Member" name="SeniorUnsecuredFloatingRateNotesDueDecember2016Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="unh_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitures" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitures" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_ShareholdersEquityAbstract" name="ShareholdersEquityAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_SixPercentSeniorUnsecuredNotesDueJuneTwoThousandSeventeenMember" name="SixPercentSeniorUnsecuredNotesDueJuneTwoThousandSeventeenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_SixPointEightSevenFivePercentSeniorUnsecuredNotesDueFebruray2038Member" name="SixPointEightSevenFivePercentSeniorUnsecuredNotesDueFebruray2038Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_SixPointFivePercentSeniorUnsecuredNotesDueJuneTwoThousandThirtySevenMember" name="SixPointFivePercentSeniorUnsecuredNotesDueJuneTwoThousandThirtySevenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_SixPointSixTwoFivePercentSeniorUnsecuredNotesDueNovember2037Member" name="SixPointSixTwoFivePercentSeniorUnsecuredNotesDueNovember2037Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_SixPointZeroPercentSeniorUnsecuredNotesDueNovember2017Member" name="SixPointZeroPercentSeniorUnsecuredNotesDueNovember2017Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_SixPointZeroSeniorUnsecuredNotesDueFebruaryTwoThousandEighteenMember" name="SixPointZeroSeniorUnsecuredNotesDueFebruaryTwoThousandEighteenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_StockOptionsAndSarsMemberMember" name="StockOptionsAndSarsMemberMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="unh_SupplementalInformationForCurrentYearClaimsandClaimsAdjustmentExpense" name="SupplementalInformationForCurrentYearClaimsandClaimsAdjustmentExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="unh_SupplementalInformationForPriorYearClaimsandClaimsAdjustmentExpense" name="SupplementalInformationForPriorYearClaimsandClaimsAdjustmentExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_TerminatedInterestRateSwapsMember" name="TerminatedInterestRateSwapsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_ThreePointEightSevenFivePercentSeniorUnsecuredNotesDueOctober2020Member" name="ThreePointEightSevenFivePercentSeniorUnsecuredNotesDueOctober2020Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_ThreePointThreeSevenFivePercentSeniorUnsecuredNotesDueNovember2021Member" name="ThreePointThreeSevenFivePercentSeniorUnsecuredNotesDueNovember2021Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="unh_TotalNumberOfSecurityPositions" name="TotalNumberOfSecurityPositions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/> |
| <xsd:element abstract="true" id="unh_TotalOptumMember" name="TotalOptumMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_TrademarksandTechnologyMember" name="TrademarksandTechnologyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_TwoPointEightSevenFiveSeniorUnsecuredNotesDueMarch2022Member" name="TwoPointEightSevenFiveSeniorUnsecuredNotesDueMarch2022Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_UnitedhealthcareMember" name="UnitedhealthcareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="unh_ZeroCouponSeniorUnsecuredNotesDueNovemberTwoThousandTwentyTwoMember" name="ZeroCouponSeniorUnsecuredNotesDueNovemberTwoThousandTwentyTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| </xsd:schema> |