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as...falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse810000000810falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis item represents the total of all debt securities grouped by maturity dates, at fair value, which are categorized as marketable.No authoritative reference available.truefalse19false0ups_MarketableSecuritiesEquitySecuritiesFairValueupsfalsedebitinstantThis item represents the total of all equity securities, at fair value, which are categorized as marketable.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse7300000073falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis item represents the total of all equity securities, at fair value, which are categorized as marketable.No authoritative reference available.falsefalse20false0us-gaap_MarketableSecuritiesus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse883000000883falsetruefalsefalsefalse2truefalsefalse805000000805falsetruefalsefalsefalseMonetaryxbrli: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 truefalse216Amortized Cost and Estimated Fair Value of Marketable Securities by Contractual Maturity (Detail) (USD $)MillionsUnKnownUnKnownUnKnownfalsetrue