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12/31/2010
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12/31/2010
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3/31/2011
USD ($)
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12/31/2010
USD ($)
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12/31/2010
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12/31/2010
USD ($)
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USD ($)
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12/31/2010
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12/31/2010
USD ($)
$eol_PE10216---1110-Q0006_STD_0_20101231_0_410838x417313_410952x409061http://www.sec.gov/CIK0001090727instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseNon-current marketable securitiesus-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldiups_LongTermMarketableSecuritiesMemberus-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberfalsefalsePreferred equity securitiesus-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostReportedAmountsByCategoryAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PreferredStockMemberus-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostReportedAmountsByCategoryAxisexplicitMemberiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalse64true0us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalse65false0us-gaap_AvailableForSaleSecuritiesAmortizedCostus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse1600000016falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments made for accretion, amortization, other-than-temporary impairments, and hedging, if any.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS115-1/124-1
-Paragraph 7
-Footnote 2
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 19
falsefalse66false0ups_AvailableForSaleSecuritiesUnrealizedGainsupsfalsedebitinstantThis item represents the unrealized gain on debt or equity securities categorized neither as held-to-maturity nor trading...falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse10000001falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis item represents the unrealized gain on debt or equity securities categorized neither as held-to-maturity nor trading securities.No authoritative reference available.falsefalse67false0ups_AvailableForSaleSecuritiesUnrealizedLossesupsfalsecreditinstantThis item represents the unrealized losses on debt or equity securities categorized neither as held-to-maturity nor trading...falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-3000000-3falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis item represents the unrealized losses on debt or equity securities categorized neither as held-to-maturity nor trading securities.No authoritative reference available.falsefalse68false0us-gaap_MarketableSecuritiesus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse1400000014falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 19
truefalse267Summary of Marketable Securities (Detail) (USD $)MillionsUnKnownUnKnownUnKnownfalsetrue
