2.2.0.7falseGoodwill and Other Intangible Assets (Narrative) (Details) (USD $)40502 - Disclosure - Goodwill and Other Intangible Assets (Narrative) (Details)truefalseIn Millionsfalsefalse1USDfalsefalseUnit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit13Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0$20unh_GoodwillAndIntangibleAssetsAbstractunhfalsenadurationGoodwill and Intangible Assets [Abstract]falsefalsefalsefalsefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalsefalse00falsefalsefalsexbrli:stringItemTypestringGoodwill and Intangible Assets [Abstract]false31us-gaap_AcquiredFiniteLivedIntangibleAssetAmountus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabelfalse1truetruefalsefalse860000000860falsefalsefalsexbrli:monetaryItemTypemonetaryThe aggregate amount assigned to a major class of finite-lived intangible assets acquired either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 44
-Subparagraph a(1)
false12falseMillionsUnKnownUnKnownfalsetrue