2.2.0.25truefalse148 - Disclosure - Roll-forward of Common Stock, Additional Paid-in Capital, and Retained Earnings Accounts (Parenthetical) (Detail)truefalsefalse1falsefalseUSDtruefalse{us-gaap_StatementEquityComponentsAxis} : Retained Earnings 1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $eol_PE10216---1110-Q0006_STD_90_20110331_0_411810x410600http://www.sec.gov/CIK0001090727duration2011-01-01T00:00:002011-03-31T00:00:00falsefalseRetained Earningsus-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RetainedEarningsMemberus-gaap_StatementEquityComponentsAxisexplicitMemberiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170iso4217_USD_per_sharesDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instanceshares0USDUSD$2falsefalseUSDtruefalse{us-gaap_StatementEquityComponentsAxis} : Retained Earnings 1/1/2010 - 3/31/2010 USD ($) USD ($) / shares $eol_PE10216---1110-Q0006_STD_90_20100331_0_411810x410600http://www.sec.gov/CIK0001090727duration2010-01-01T00:00:002010-03-31T00:00:00falsefalseRetained Earningsus-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RetainedEarningsMemberus-gaap_StatementEquityComponentsAxisexplicitMemberiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170iso4217_USD_per_sharesDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instanceshares0USDUSD$2true0ups_StockholdersEquityNoteLineItemsupsfalsenadurationStockholders Equity Note [Line Items]falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringStockholders Equity Note [Line Items]falsefalse3false0us-gaap_CommonStockDividendsPerShareCashPaidus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse0.520.52falsetruefalsefalsefalse2truefalsefalse0.470.47falsetruefalsefalsefalseEPSus-types:perShareItemTypedecimalAggregate dividends paid during the period for each share of common stock outstanding.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 falsetrue22Roll-forward of Common Stock, Additional Paid-in Capital, and Retained Earnings Accounts (Parenthetical) (Detail) (Retained Earnings, USD $)UnKnownUnKnownNoRoundingUnKnownfalsetrue