SEC Info  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Unitedhealth Group Inc – ‘10-Q’ for 9/30/17 – ‘XML’

On:  Tuesday, 11/7/17, at 4:13pm ET   ·   For:  9/30/17   ·   Accession #:  731766-17-45   ·   File #:  1-10864

Previous ‘10-Q’:  ‘10-Q’ on 8/4/17 for 6/30/17   ·   Next:  ‘10-Q’ on 5/7/18 for 3/31/18   ·   Latest:  ‘10-Q’ on 5/9/24 for 3/31/24   ·   2 References:   

Find Words in Filings emoji
 
  in    Show  and   Hints

  As Of               Filer                 Filing    For·On·As Docs:Size

11/07/17  Unitedhealth Group Inc            10-Q        9/30/17   58:9.9M

Quarterly Report   —   Form 10-Q   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML    714K 
 2: EX-10.1     Material Contract                                   HTML     26K 
 3: EX-10.2     Material Contract                                   HTML     23K 
 4: EX-10.3     Material Contract                                   HTML     24K 
 5: EX-12.1     Statement re: Computation of Ratios                 HTML     29K 
 6: EX-31.1     Certification -- §302 - SOA'02                      HTML     33K 
 7: EX-32.1     Certification -- §906 - SOA'02                      HTML     22K 
14: R1          Document and Entity Information Document            HTML     37K 
15: R2          Condensed Consolidated Balance Sheets               HTML    118K 
16: R3          Condensed Consolidated Balance Sheet                HTML     34K 
                (Parenthetical)                                                  
17: R4          Condensed Consolidated Statements of Operations     HTML     87K 
18: R5          Condensed Consolidated Statements of Comprehensive  HTML     56K 
                Income                                                           
19: R6          Condensed Consolidated Statements of Changes in     HTML     87K 
                Equity                                                           
20: R7          Condensed Consolidated Statements of Cash Flows     HTML    105K 
21: R8          Basis of Presentation (Notes)                       HTML     34K 
22: R9          Investments (Notes)                                 HTML    222K 
23: R10         Fair Value (Notes)                                  HTML    182K 
24: R11         Other Current Receivables (Notes)                   HTML     24K 
25: R12         Medical Costs Payable (Notes)                       HTML     40K 
26: R13         Commercial Paper and Long-Term Debt (Notes)         HTML    205K 
27: R14         Shareholders' Equity (Notes)                        HTML     30K 
28: R15         Commitments and Contingencies (Notes)               HTML     30K 
29: R16         Segment Financial Information (Notes)               HTML    311K 
30: R17         Basis of Presentation Basis of Presentation         HTML     45K 
                (Policies)                                                       
31: R18         Investments Investments (Policies)                  HTML     23K 
32: R19         Investments (Tables)                                HTML    219K 
33: R20         Fair Value (Tables)                                 HTML    182K 
34: R21         Medical Costs Payable (Tables)                      HTML     40K 
35: R22         Commercial Paper and Long-Term Debt (Tables)        HTML    205K 
36: R23         Shareholders' Equity (Tables)                       HTML     28K 
37: R24         Segment Financial Information (Tables)              HTML    310K 
38: R25         Basis of Presentation Basis of Presentation, Uses   HTML     27K 
                of Estimates and Significant Accounting Policies                 
                (Details)                                                        
39: R26         Investments (Narrative) (Details)                   HTML     25K 
40: R27         Investments (Short-Term and Long-Term Investments)  HTML     84K 
                (Details)                                                        
41: R28         Investments (Amortized Cost and Fair Value of       HTML     92K 
                Available-for-Sale Debt Securities by Contractual                
                Maturity) (Details)                                              
42: R29         Investments (Fair Value of Available-For-Sale       HTML     62K 
                Investments with Gross Unrealized Losses by                      
                Investment Type and Length of Time That Individual               
                Securities Have Been in a Continuous Unrealized                  
                Loss Position) (Details)                                         
43: R30         Fair Value (Narrative) (Details)                    HTML     36K 
44: R31         Fair Value (Financial Assets and Liabilities        HTML     84K 
                Measured at Fair Value on a Recurring Basis)                     
                (Details)                                                        
45: R32         Fair Value (Financial Assets and Liabilities, Not   HTML     78K 
                Measured at Fair Value on a Recurring Basis)                     
                (Details)                                                        
46: R33         Other Current Receivables (Details)                 HTML     22K 
47: R34         Medical Costs Payable (Narrative) (Details)         HTML     20K 
48: R35         Medical Costs Payable Rollforward (Details)         HTML     42K 
49: R36         Commercial Paper and Long-Term Debt (Narrative)     HTML     69K 
                (Details)                                                        
50: R37         Commercial Paper and Long-Term Debt (Details)       HTML    163K 
51: R38         Commercial Paper and Long-Term Debt Subsequent      HTML     37K 
                Events (Details)                                                 
52: R39         Shareholders' Equity (Details)                      HTML     23K 
53: R40         Commitments and Contingencies (Details)             HTML     32K 
54: R41         Segment Financial Information (Narrative)           HTML     27K 
                (Details)                                                        
55: R42         Segment Financial Information (Details)             HTML     99K 
57: XML         IDEA XML File -- Filing Summary                      XML     97K 
56: EXCEL       IDEA Workbook of Financial Reports                  XLSX     65K 
 8: EX-101.INS  XBRL Instance -- unh-20170930                        XML   3.70M 
10: EX-101.CAL  XBRL Calculations -- unh-20170930_cal                XML    190K 
11: EX-101.DEF  XBRL Definitions -- unh-20170930_def                 XML    633K 
12: EX-101.LAB  XBRL Labels -- unh-20170930_lab                      XML   1.35M 
13: EX-101.PRE  XBRL Presentations -- unh-20170930_pre               XML    803K 
 9: EX-101.SCH  XBRL Schema -- unh-20170930                          XSD    126K 
58: ZIP         XBRL Zipped Folder -- 0000731766-17-000045-xbrl      Zip    217K 


‘XML’   —   IDEA XML File — Filing Summary


This Document is an IDEA XML File.


                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<FilingSummary>
<Version> 3.8.0.1 </Version>
<ProcessingTime/>
<ReportFormat> html </ReportFormat>
<ContextCount> 370 </ContextCount>
<ElementCount> 242 </ElementCount>
<EntityCount> 1 </EntityCount>
<FootnotesReported> false </FootnotesReported>
<SegmentCount> 94 </SegmentCount>
<ScenarioCount> 0 </ScenarioCount>
<TuplesReported> false </TuplesReported>
<UnitCount> 5 </UnitCount>
<MyReports>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R1.htm </HtmlFileName>
<LongName> 0001000 - Document - Document and Entity Information Document </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/DocumentAndEntityInformationDocument </Role>
<ShortName> Document and Entity Information Document </ShortName>
<MenuCategory> Cover </MenuCategory>
<Position> 1 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R2.htm </HtmlFileName>
<LongName> 1001000 - Statement - Condensed Consolidated Balance Sheets </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/CondensedConsolidatedBalanceSheets </Role>
<ShortName> Condensed Consolidated Balance Sheets </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 2 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R3.htm </HtmlFileName>
<LongName> 1002500 - Statement - Condensed Consolidated Balance Sheet (Parenthetical) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/CondensedConsolidatedBalanceSheetParenthetical </Role>
<ShortName> Condensed Consolidated Balance Sheet (Parenthetical) </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 3 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R4.htm </HtmlFileName>
<LongName> 1003000 - Statement - Condensed Consolidated Statements of Operations </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/CondensedConsolidatedStatementsOfOperations </Role>
<ShortName> Condensed Consolidated Statements of Operations </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 4 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R5.htm </HtmlFileName>
<LongName> 1004000 - Statement - Condensed Consolidated Statements of Comprehensive Income </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/CondensedConsolidatedStatementsOfComprehensiveIncome </Role>
<ShortName> Condensed Consolidated Statements of Comprehensive Income </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 5 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R6.htm </HtmlFileName>
<LongName> 1005000 - Statement - Condensed Consolidated Statements of Changes in Equity </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/CondensedConsolidatedStatementsOfChangesInEquity </Role>
<ShortName> Condensed Consolidated Statements of Changes in Equity </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 6 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R7.htm </HtmlFileName>
<LongName> 1006000 - Statement - Condensed Consolidated Statements of Cash Flows </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/CondensedConsolidatedStatementsOfCashFlows </Role>
<ShortName> Condensed Consolidated Statements of Cash Flows </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 7 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R8.htm </HtmlFileName>
<LongName> 2117100 - Disclosure - Basis of Presentation (Notes) </LongName>
<ReportType> Notes </ReportType>
<Role> http://www.uhc.com/role/BasisOfPresentationNotes </Role>
<ShortName> Basis of Presentation (Notes) </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 8 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R9.htm </HtmlFileName>
<LongName> 2130100 - Disclosure - Investments (Notes) </LongName>
<ReportType> Notes </ReportType>
<Role> http://www.uhc.com/role/InvestmentsNotes </Role>
<ShortName> Investments (Notes) </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 9 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R10.htm </HtmlFileName>
<LongName> 2134100 - Disclosure - Fair Value (Notes) </LongName>
<ReportType> Notes </ReportType>
<Role> http://www.uhc.com/role/FairValueNotes </Role>
<ShortName> Fair Value (Notes) </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 10 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R11.htm </HtmlFileName>
<LongName> 2136100 - Disclosure - Other Current Receivables (Notes) </LongName>
<ReportType> Notes </ReportType>
<Role> http://www.uhc.com/role/OtherCurrentReceivablesNotes </Role>
<ShortName> Other Current Receivables (Notes) </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 11 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R12.htm </HtmlFileName>
<LongName> 2138100 - Disclosure - Medical Costs Payable (Notes) </LongName>
<ReportType> Notes </ReportType>
<Role> http://www.uhc.com/role/MedicalCostsPayableNotes </Role>
<ShortName> Medical Costs Payable (Notes) </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 12 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R13.htm </HtmlFileName>
<LongName> 2142100 - Disclosure - Commercial Paper and Long-Term Debt (Notes) </LongName>
<ReportType> Notes </ReportType>
<Role> http://www.uhc.com/role/CommercialPaperAndLongTermDebtNotes </Role>
<ShortName> Commercial Paper and Long-Term Debt (Notes) </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 13 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R14.htm </HtmlFileName>
<LongName> 2147100 - Disclosure - Shareholders' Equity (Notes) </LongName>
<ReportType> Notes </ReportType>
<Role> http://www.uhc.com/role/ShareholdersEquityNotes </Role>
<ShortName> Shareholders' Equity (Notes) </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 14 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R15.htm </HtmlFileName>
<LongName> 2148100 - Disclosure - Commitments and Contingencies (Notes) </LongName>
<ReportType> Notes </ReportType>
<Role> http://www.uhc.com/role/CommitmentsAndContingenciesNotes </Role>
<ShortName> Commitments and Contingencies (Notes) </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 15 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R16.htm </HtmlFileName>
<LongName> 2149100 - Disclosure - Segment Financial Information (Notes) </LongName>
<ReportType> Notes </ReportType>
<Role> http://www.uhc.com/role/SegmentFinancialInformationNotes </Role>
<ShortName> Segment Financial Information (Notes) </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 16 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R17.htm </HtmlFileName>
<LongName> 2217201 - Disclosure - Basis of Presentation Basis of Presentation (Policies) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/BasisOfPresentationBasisOfPresentationPolicies </Role>
<ShortName> Basis of Presentation Basis of Presentation (Policies) </ShortName>
<MenuCategory> Policies </MenuCategory>
<Position> 17 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R18.htm </HtmlFileName>
<LongName> 2230201 - Disclosure - Investments Investments (Policies) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/InvestmentsInvestmentsPolicies </Role>
<ShortName> Investments Investments (Policies) </ShortName>
<MenuCategory> Policies </MenuCategory>
<Position> 18 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R19.htm </HtmlFileName>
<LongName> 2330302 - Disclosure - Investments (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/InvestmentsTables </Role>
<ShortName> Investments (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.uhc.com/role/InvestmentsNotes </ParentRole>
<Position> 19 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R20.htm </HtmlFileName>
<LongName> 2334301 - Disclosure - Fair Value (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/FairValueTables </Role>
<ShortName> Fair Value (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.uhc.com/role/FairValueNotes </ParentRole>
<Position> 20 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R21.htm </HtmlFileName>
<LongName> 2338301 - Disclosure - Medical Costs Payable (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/MedicalCostsPayableTables </Role>
<ShortName> Medical Costs Payable (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.uhc.com/role/MedicalCostsPayableNotes </ParentRole>
<Position> 21 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R22.htm </HtmlFileName>
<LongName> 2342301 - Disclosure - Commercial Paper and Long-Term Debt (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/CommercialPaperAndLongTermDebtTables </Role>
<ShortName> Commercial Paper and Long-Term Debt (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.uhc.com/role/CommercialPaperAndLongTermDebtNotes </ParentRole>
<Position> 22 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R23.htm </HtmlFileName>
<LongName> 2347301 - Disclosure - Shareholders' Equity (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/ShareholdersEquityTables </Role>
<ShortName> Shareholders' Equity (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.uhc.com/role/ShareholdersEquityNotes </ParentRole>
<Position> 23 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R24.htm </HtmlFileName>
<LongName> 2349301 - Disclosure - Segment Financial Information (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/SegmentFinancialInformationTables </Role>
<ShortName> Segment Financial Information (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.uhc.com/role/SegmentFinancialInformationNotes </ParentRole>
<Position> 24 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R25.htm </HtmlFileName>
<LongName> 2417402 - Disclosure - Basis of Presentation Basis of Presentation, Uses of Estimates and Significant Accounting Policies (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/BasisOfPresentationBasisOfPresentationUsesOfEstimatesAndSignificantAccountingPoliciesDetails </Role>
<ShortName> Basis of Presentation Basis of Presentation, Uses of Estimates and Significant Accounting Policies (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 25 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R26.htm </HtmlFileName>
<LongName> 2430403 - Disclosure - Investments (Narrative) (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/InvestmentsNarrativeDetails </Role>
<ShortName> Investments (Narrative) (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.uhc.com/role/InvestmentsTables </ParentRole>
<Position> 26 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R27.htm </HtmlFileName>
<LongName> 2430404 - Disclosure - Investments (Short-Term and Long-Term Investments) (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/InvestmentsShortTermAndLongTermInvestmentsDetails </Role>
<ShortName> Investments (Short-Term and Long-Term Investments) (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.uhc.com/role/InvestmentsTables </ParentRole>
<Position> 27 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R28.htm </HtmlFileName>
<LongName> 2430405 - Disclosure - Investments (Amortized Cost and Fair Value of Available-for-Sale Debt Securities by Contractual Maturity) (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/InvestmentsAmortizedCostAndFairValueOfAvailableForSaleDebtSecuritiesByContractualMaturityDetails </Role>
<ShortName> Investments (Amortized Cost and Fair Value of Available-for-Sale Debt Securities by Contractual Maturity) (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.uhc.com/role/InvestmentsTables </ParentRole>
<Position> 28 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R29.htm </HtmlFileName>
<LongName> 2430406 - 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) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/InvestmentsFairValueOfAvailableForSaleInvestmentsWithGrossUnrealizedLossesByInvestmentTypeAndLengthOfTimeThatIndividualSecuritiesHaveBeenInContinuousUnrealizedLossPositionDetails </Role>
<ShortName> 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) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.uhc.com/role/InvestmentsTables </ParentRole>
<Position> 29 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R30.htm </HtmlFileName>
<LongName> 2434402 - Disclosure - Fair Value (Narrative) (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/FairValueNarrativeDetails </Role>
<ShortName> Fair Value (Narrative) (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.uhc.com/role/FairValueTables </ParentRole>
<Position> 30 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R31.htm </HtmlFileName>
<LongName> 2434403 - Disclosure - Fair Value (Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/FairValueFinancialAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails </Role>
<ShortName> Fair Value (Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.uhc.com/role/FairValueTables </ParentRole>
<Position> 31 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R32.htm </HtmlFileName>
<LongName> 2434404 - Disclosure - Fair Value (Financial Assets and Liabilities, Not Measured at Fair Value on a Recurring Basis) (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/FairValueFinancialAssetsAndLiabilitiesNotMeasuredAtFairValueOnRecurringBasisDetails </Role>
<ShortName> Fair Value (Financial Assets and Liabilities, Not Measured at Fair Value on a Recurring Basis) (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.uhc.com/role/FairValueTables </ParentRole>
<Position> 32 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R33.htm </HtmlFileName>
<LongName> 2436402 - Disclosure - Other Current Receivables (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/OtherCurrentReceivablesDetails </Role>
<ShortName> Other Current Receivables (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.uhc.com/role/OtherCurrentReceivablesNotes </ParentRole>
<Position> 33 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R34.htm </HtmlFileName>
<LongName> 2438402 - Disclosure - Medical Costs Payable (Narrative) (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/MedicalCostsPayableNarrativeDetails </Role>
<ShortName> Medical Costs Payable (Narrative) (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.uhc.com/role/MedicalCostsPayableTables </ParentRole>
<Position> 34 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R35.htm </HtmlFileName>
<LongName> 2438403 - Disclosure - Medical Costs Payable Rollforward (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/MedicalCostsPayableRollforwardDetails </Role>
<ShortName> Medical Costs Payable Rollforward (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 35 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R36.htm </HtmlFileName>
<LongName> 2442402 - Disclosure - Commercial Paper and Long-Term Debt (Narrative) (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/CommercialPaperAndLongTermDebtNarrativeDetails </Role>
<ShortName> Commercial Paper and Long-Term Debt (Narrative) (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.uhc.com/role/CommercialPaperAndLongTermDebtTables </ParentRole>
<Position> 36 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R37.htm </HtmlFileName>
<LongName> 2442403 - Disclosure - Commercial Paper and Long-Term Debt (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/CommercialPaperAndLongTermDebtDetails </Role>
<ShortName> Commercial Paper and Long-Term Debt (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.uhc.com/role/CommercialPaperAndLongTermDebtTables </ParentRole>
<Position> 37 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R38.htm </HtmlFileName>
<LongName> 2442404 - Disclosure - Commercial Paper and Long-Term Debt Subsequent Events (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/CommercialPaperAndLongTermDebtSubsequentEventsDetails </Role>
<ShortName> Commercial Paper and Long-Term Debt Subsequent Events (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 38 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R39.htm </HtmlFileName>
<LongName> 2447403 - Disclosure - Shareholders' Equity (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/ShareholdersEquityDetails </Role>
<ShortName> Shareholders' Equity (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.uhc.com/role/ShareholdersEquityTables </ParentRole>
<Position> 39 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R40.htm </HtmlFileName>
<LongName> 2448401 - Disclosure - Commitments and Contingencies (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/CommitmentsAndContingenciesDetails </Role>
<ShortName> Commitments and Contingencies (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.uhc.com/role/CommitmentsAndContingenciesNotes </ParentRole>
<Position> 40 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R41.htm </HtmlFileName>
<LongName> 2449402 - Disclosure - Segment Financial Information (Narrative) (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/SegmentFinancialInformationNarrativeDetails </Role>
<ShortName> Segment Financial Information (Narrative) (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.uhc.com/role/SegmentFinancialInformationTables </ParentRole>
<Position> 41 </Position>
</Report>
<Report instance="unh-20170930.xml">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R42.htm </HtmlFileName>
<LongName> 2449403 - Disclosure - Segment Financial Information (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.uhc.com/role/SegmentFinancialInformationDetails </Role>
<ShortName> Segment Financial Information (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.uhc.com/role/SegmentFinancialInformationTables </ParentRole>
<Position> 42 </Position>
</Report>
<Report>
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<LongName> All Reports </LongName>
<ReportType> Book </ReportType>
<ShortName> All Reports </ShortName>
</Report>
</MyReports>
<InputFiles>
<File> unh-20170930.xml </File>
<File> unh-20170930.xsd </File>
<File> unh-20170930_cal.xml </File>
<File> unh-20170930_def.xml </File>
<File> unh-20170930_lab.xml </File>
<File> unh-20170930_pre.xml </File>
</InputFiles>
<SupplementalFiles/>
<BaseTaxonomies>
<BaseTaxonomy> http://xbrl.sec.gov/invest/2013-01-31 </BaseTaxonomy>
<BaseTaxonomy> http://xbrl.sec.gov/dei/2014-01-31 </BaseTaxonomy>
<BaseTaxonomy> http://fasb.org/us-gaap/2017-01-31 </BaseTaxonomy>
</BaseTaxonomies>
<HasPresentationLinkbase> true </HasPresentationLinkbase>
<HasCalculationLinkbase> true </HasCalculationLinkbase>
</FilingSummary>


2 Subsequent Filings that Reference this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 2/15/22  UnitedHealth Group Inc.           10-K       12/31/21  113:19M
 3/01/21  UnitedHealth Group Inc.           10-K       12/31/20  107:17M
Top
Filing Submission 0000731766-17-000045   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
AboutPrivacyRedactionsHelp — Fri., May 10, 1:32:29.2pm ET