2.2.0.7 false Basis of Presentation, Use of Estimates and Significant Accounting Policies 10101 - Disclosure - Basis of Presentation, Use of Estimates and Significant Accounting Policies true false false false 1 USD false false Unit13 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Unit12 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Unit14 Standard http://www.xbrl.org/2003/instance pure xbrli 0 Unit1 Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ 2 0 us-gaap_GeneralPoliciesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 3 1 us-gaap_SignificantAccountingPoliciesTextBlock us-gaap true na duration No definition available. false false false false false false false false false false false terselabel false 1 false false false false 0 0 <div> <div class="WordSection1"> <div> <p style="margin-top: 18px; margin-bottom: 0px;"><font style="font-family: Times New Roman;" class="_mt" size="2"><b>1.&nbsp;&nbsp;&nbsp;&nbsp;Basis of Presentation, Use of Estimates and Significant Accounting Policies </b></font></p> <p style="margin-top: 6px; margin-bottom: 0px;"><font style="font-family: Times New Roman;" class="_mt" size="2"><b><i>Basis of Presentation </i></b></font></p> <p style="margin-top: 6px; margin-bottom: 0px;"><font style="font-family: Times New Roman;" class="_mt" size="2">The accompanying Condensed Consolidated Financial Statements include the consolidated accounts of UnitedHealth Group Incorporated and its subsidiaries (the Company). The Company has eliminated intercompany balances and transactions. The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by U.S. Generally Accepted Accounting Principles (U.S. GAAP). In accordance with the rules and regulations of the U.S. Securities and Exchange Commission (SEC), the Company has omitted certain footnote disclosures that would substantially duplicate the disclosures contained in its annual audited Consolidated Financial Statements. As such, these Condensed Consolidated Financial Statements should be read together with the Consolidated Financial Statements and the Notes included in the Company's Annual Report on Form&nbsp;10-K for the year ended December&nbsp;31, 2009 as filed with the SEC (2009 10-K). The accompanying Condensed Consolidated Financial Statements include all normal recurring adjustments necessary to present the interim financial statements fairly. </font></p> <div> <p style="margin-top: 18px; margin-bottom: 0px;"><font style="font-family: Times New Roman;" class="_mt" size="2"><b><i>Use of Estimates </i></b></font></p> <p style="margin-top: 6px; margin-bottom: 0px;"><font style="font-family: Times New Roman;" class="_mt" size="2">These Condensed Consolidated Financial Statements include certain amounts based on the Company's best estimates and judgments. The Company's most significant estimates relate to medical costs, medical costs payable, revenues, goodwill, other intangible assets, investments, income taxes and contingent liabilities. These estimates require the application of complex assumptions and judgments, often because they involve matters that are inherently uncertain and will likely change in subsequent periods. The impact of any changes in estimates is included in earnings in the period in which the estimate is adjusted.</font></p></div> <p style="margin-top: 18px; margin-bottom: 0px;"><font style="font-family: Times New Roman;" class="_mt" size="2"><b><i>Recent Accounting Standards </i></b></font></p> <div class="MetaData"> <p style="margin-top: 6px; margin-bottom: 0px;"><font style="font-family: Times New Roman;" class="_mt" size="2"><b><i>Recently Adopted Accounting Standards. </i></b>In January 2010, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No.&nbsp;2010-06, "Improving Disclosures about Fair Value Measurements" (ASU 2010-06). This update amends the fair value guidance of the FASB Accounting Standards Codification (ASC) to require additional disclosures regarding (i)&nbsp;transfers in and out of Level 1 and Level 2 fair value measurements and (ii)&nbsp;activity in Level 3 fair value measurements. ASU 2010-06 also clarifies existing disclosure requirements regarding (i)&nbsp;the level of asset and liability disaggregation and (ii)&nbsp;fair value measurement inputs and valuation techniques. The new disclosures and clarifications of existing disclosures are effective for the Company's fiscal year 2010, except for the disclosures about purchases, sales, issuances and settlements in the roll forward of activity in Level 3 fair value measurements, which will be effective for the Company's fiscal year 2011.&nbsp;The Company's fair value disclosures, including the new disclosures effective in 2010, have been included in Note 3 of Notes to the Condensed Consolidated Financial Statements. </font></p> <p style="margin-top: 12px; margin-bottom: 0px;"><font style="font-family: Times New Roman;" class="_mt" size="2">The Company has determined that there have been no recently issued accounting standards that will have a material impact on its Condensed Consolidated Financial Statements, or apply to its operations.</font></p></div></div> <p style="margin: 13.5pt 0in 0pt;">&nbsp;</p> <p>&nbsp;</p></div> <p style="margin-top: 18px; margin-bottom: 0px;">&nbsp;</p> <p style="margin-top: 12px; margin-bottom: 0px;"><font style="font-family: Times New Roman;" class="_mt" size="2"> </font>&nbsp;</p> </div> 1.&nbsp;&nbsp;&nbsp;&nbsp;Basis of Presentation, Use of Estimates and Significant Accounting Policies Basis of Presentation The accompanying Condensed false false false us-types:textBlockItemType textblock This element may be used to describe all significant accounting policies of the reporting entity. 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