3.26.1 html 221 281 1 false 39 0 false 6 false false R1.htm 0000001 - Document - Document and Entity Information Document Sheet http://www.uhg.com/role/DocumentandEntityInformationDocument Document and Entity Information Document Cover 1 false false R2.htm 9952151 - Statement - Condensed Consolidated Balance Sheets Sheet http://www.uhg.com/role/CondensedConsolidatedBalanceSheets Condensed Consolidated Balance Sheets Statements 2 false false R3.htm 9952153 - Statement - Condensed Consolidated Statements of Operations Sheet http://www.uhg.com/role/CondensedConsolidatedStatementsofOperations Condensed Consolidated Statements of Operations Statements 3 false false R4.htm 9952154 - Statement - Condensed Consolidated Statements of Comprehensive Income Sheet http://www.uhg.com/role/CondensedConsolidatedStatementsofComprehensiveIncome Condensed Consolidated Statements of Comprehensive Income Statements 4 false false R5.htm 9952155 - Statement - Condensed Consolidated Statements of Changes in Equity Sheet http://www.uhg.com/role/CondensedConsolidatedStatementsofChangesinEquity Condensed Consolidated Statements of Changes in Equity Statements 5 false false R6.htm 9952156 - Statement - Condensed Consolidated Statements of Cash Flows Sheet http://www.uhg.com/role/CondensedConsolidatedStatementsofCashFlows Condensed Consolidated Statements of Cash Flows Statements 6 false false R7.htm 9952157 - Disclosure - Basis of Presentation (Notes) Notes http://www.uhg.com/role/BasisofPresentationNotes Basis of Presentation (Notes) Notes 7 false false R8.htm 9952158 - Disclosure - Investments (Notes) Notes http://www.uhg.com/role/InvestmentsNotes Investments (Notes) Notes 8 false false R9.htm 9952159 - Disclosure - Fair Value (Notes) Notes http://www.uhg.com/role/FairValueNotes Fair Value (Notes) Notes 9 false false R10.htm 9952160 - Disclosure - Medical Costs Payable (Notes) Notes http://www.uhg.com/role/MedicalCostsPayableNotes Medical Costs Payable (Notes) Notes 10 false false R11.htm 9952161 - Disclosure - Short-Term Borrowings and Long-Term Debt (Notes) Notes http://www.uhg.com/role/ShortTermBorrowingsandLongTermDebtNotes Short-Term Borrowings and Long-Term Debt (Notes) Notes 11 false false R12.htm 9952162 - Disclosure - Shareholders' Equity (Notes) Notes http://www.uhg.com/role/ShareholdersEquityNotes Shareholders' Equity (Notes) Notes 12 false false R13.htm 9952163 - Disclosure - Commitments and Contingencies (Notes) Notes http://www.uhg.com/role/CommitmentsandContingenciesNotes Commitments and Contingencies (Notes) Notes 13 false false R14.htm 9952164 - Disclosure - Held for Sale and Dispositions (Notes) Notes http://www.uhg.com/role/HeldforSaleandDispositionsNotes Held for Sale and Dispositions (Notes) Notes 14 false false R15.htm 9952165 - Disclosure - Segment Financial Information (Notes) Notes http://www.uhg.com/role/SegmentFinancialInformationNotes Segment Financial Information (Notes) Notes 15 false false R16.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 16 false false R17.htm 9955511 - Disclosure - Basis of Presentation (Policies) Sheet http://www.uhg.com/role/BasisofPresentationPolicies Basis of Presentation (Policies) Policies 17 false false R18.htm 9955512 - Disclosure - Investments (Policies) Sheet http://www.uhg.com/role/InvestmentsPolicies Investments (Policies) Policies 18 false false R19.htm 9955514 - Disclosure - Investments (Tables) Sheet http://www.uhg.com/role/InvestmentsTables Investments (Tables) Tables http://www.uhg.com/role/InvestmentsNotes 19 false false R20.htm 9955515 - Disclosure - Fair Value (Tables) Sheet http://www.uhg.com/role/FairValueTables Fair Value (Tables) Tables http://www.uhg.com/role/FairValueNotes 20 false false R21.htm 9955516 - Disclosure - Medical Costs Payable (Tables) Sheet http://www.uhg.com/role/MedicalCostsPayableTables Medical Costs Payable (Tables) Tables http://www.uhg.com/role/MedicalCostsPayableNotes 21 false false R22.htm 9955518 - Disclosure - Shareholders' Equity (Tables) Sheet http://www.uhg.com/role/ShareholdersEquityTables Shareholders' Equity (Tables) Tables http://www.uhg.com/role/ShareholdersEquityNotes 22 false false R23.htm 9955519 - Disclosure - Held for Sale and Dispositions (Tables) Sheet http://www.uhg.com/role/HeldforSaleandDispositionsTables Held for Sale and Dispositions (Tables) Tables http://www.uhg.com/role/HeldforSaleandDispositionsNotes 23 false false R24.htm 9955520 - Disclosure - Segment Financial Information (Tables) Sheet http://www.uhg.com/role/SegmentFinancialInformationTables Segment Financial Information (Tables) Tables http://www.uhg.com/role/SegmentFinancialInformationNotes 24 false false R25.htm 9955521 - Disclosure - Basis of Presentation (Details) Sheet http://www.uhg.com/role/BasisofPresentationDetails Basis of Presentation (Details) Details http://www.uhg.com/role/BasisofPresentationPolicies 25 false false R26.htm 9955522 - Disclosure - Investments (Narrative) (Details) Sheet http://www.uhg.com/role/InvestmentsNarrativeDetails Investments (Narrative) (Details) Details http://www.uhg.com/role/InvestmentsTables 26 false false R27.htm 9955523 - Disclosure - Investments (Short-Term and Long-Term Investments) (Details) Sheet http://www.uhg.com/role/InvestmentsShortTermandLongTermInvestmentsDetails Investments (Short-Term and Long-Term Investments) (Details) Details http://www.uhg.com/role/InvestmentsTables 27 false false R28.htm 9955524 - Disclosure - Investments (Amortized Cost and Fair Value of Available-for-Sale Debt Securities by Contractual Maturity) (Details) Sheet http://www.uhg.com/role/InvestmentsAmortizedCostandFairValueofAvailableforSaleDebtSecuritiesbyContractualMaturityDetails Investments (Amortized Cost and Fair Value of Available-for-Sale Debt Securities by Contractual Maturity) (Details) Details http://www.uhg.com/role/InvestmentsTables 28 false false R29.htm 9955525 - Disclosure - Investments (Fair Value of Available-For-Sale Investments with Gross Unrealized Losses by Investment Type and Length of Time That Individual Securities Have Been in a Continuous Unrealized Loss Position) (Details) Sheet http://www.uhg.com/role/InvestmentsFairValueofAvailableForSaleInvestmentswithGrossUnrealizedLossesbyInvestmentTypeandLengthofTimeThatIndividualSecuritiesHaveBeeninaContinuousUnrealizedLossPositionDetails Investments (Fair Value of Available-For-Sale Investments with Gross Unrealized Losses by Investment Type and Length of Time That Individual Securities Have Been in a Continuous Unrealized Loss Position) (Details) Details http://www.uhg.com/role/InvestmentsTables 29 false false R30.htm 9955526 - Disclosure - Fair Value (Narrative) (Details) Sheet http://www.uhg.com/role/FairValueNarrativeDetails Fair Value (Narrative) (Details) Details http://www.uhg.com/role/FairValueTables 30 false false R31.htm 9955527 - Disclosure - Fair Value (Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) Sheet http://www.uhg.com/role/FairValueFinancialAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisDetails Fair Value (Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) Details http://www.uhg.com/role/FairValueTables 31 false false R32.htm 9955528 - Disclosure - Fair Value (Financial Assets and Liabilities, Not Measured at Fair Value on a Recurring Basis) (Details) Sheet http://www.uhg.com/role/FairValueFinancialAssetsandLiabilitiesNotMeasuredatFairValueonaRecurringBasisDetails Fair Value (Financial Assets and Liabilities, Not Measured at Fair Value on a Recurring Basis) (Details) Details http://www.uhg.com/role/FairValueTables 32 false false R33.htm 9955529 - Disclosure - Medical Costs Payable (Narrative) (Details) Sheet http://www.uhg.com/role/MedicalCostsPayableNarrativeDetails Medical Costs Payable (Narrative) (Details) Details http://www.uhg.com/role/MedicalCostsPayableTables 33 false false R34.htm 9955530 - Disclosure - Medical Costs Payable (Details) Sheet http://www.uhg.com/role/MedicalCostsPayableDetails Medical Costs Payable (Details) Details http://www.uhg.com/role/MedicalCostsPayableTables 34 false false R35.htm 9955532 - Disclosure - Short-Term Borrowings and Long-Term Debt (Narrative) (Details) Sheet http://www.uhg.com/role/ShortTermBorrowingsandLongTermDebtNarrativeDetails Short-Term Borrowings and Long-Term Debt (Narrative) (Details) Details http://www.uhg.com/role/ShortTermBorrowingsandLongTermDebtNotes 35 false false R36.htm 9955533 - Disclosure - Shareholders' Equity (Details) Sheet http://www.uhg.com/role/ShareholdersEquityDetails Shareholders' Equity (Details) Details http://www.uhg.com/role/ShareholdersEquityTables 36 false false R37.htm 9955534 - Disclosure - Commitments and Contingencies (Narrative) (Details) Sheet http://www.uhg.com/role/CommitmentsandContingenciesNarrativeDetails Commitments and Contingencies (Narrative) (Details) Details http://www.uhg.com/role/CommitmentsandContingenciesNotes 37 false false R38.htm 9955535 - Disclosure - Held for Sale and Dispositions (Details) Sheet http://www.uhg.com/role/HeldforSaleandDispositionsDetails Held for Sale and Dispositions (Details) Details http://www.uhg.com/role/HeldforSaleandDispositionsTables 38 false false R39.htm 9955536 - Disclosure - Held for Sale and Dispositions (Narrative) (Details) Sheet http://www.uhg.com/role/HeldforSaleandDispositionsNarrativeDetails Held for Sale and Dispositions (Narrative) (Details) Details http://www.uhg.com/role/HeldforSaleandDispositionsTables 39 false false R40.htm 9955537 - Disclosure - Segment Financial Information (Narrative) (Details) Sheet http://www.uhg.com/role/SegmentFinancialInformationNarrativeDetails Segment Financial Information (Narrative) (Details) Details http://www.uhg.com/role/SegmentFinancialInformationTables 40 false false R41.htm 9955538 - Disclosure - Segment Financial Information (Details) Sheet http://www.uhg.com/role/SegmentFinancialInformationDetails Segment Financial Information (Details) Details http://www.uhg.com/role/SegmentFinancialInformationTables 41 false false All Reports Book All Reports unh-20260331.htm unh-20260331.xsd unh-20260331_cal.xml unh-20260331_def.xml unh-20260331_lab.xml unh-20260331_pre.xml unh-20260331_g1.jpg http://fasb.org/us-gaap/2026 http://xbrl.sec.gov/dei/2026 http://xbrl.sec.gov/ecd/2026 true true