2.2.0.25falsefalse41103 - Disclosure - FAIR VALUE MEASUREMENT (Narrative) (Details)truefalseIn Millions, except Per Share datafalse1falsefalseUSDfalsefalse1/1/2010 - 12/31/2010
USD ($)
USD ($) / shares
$Duration_1_1_2010_To_12_31_2010http://www.sec.gov/CIK0000014272duration2010-01-01T00:00:002010-12-31T00:00:00Unit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit12Divide<
MeasureSchema>http://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit15Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0bmy_FairValueMeasurementAbstractbmyfalsenadurationFAIR VALUE MEASUREMENT [Abstract]falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringFAIR VALUE MEASUREMENT [Abstract]falsefalse3false0bmy_PrincipalAtParReceivedForFloatingRateSecuritiesbmyfalsedebitdurationThe amount of principal at par of floating rate securities received during the period.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse9300000093falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemon
etaryThe amount of principal at par of floating rate securities received during the period.No authoritative reference available.falsefalse4false0bmy_PrimeMoneyMarketFundsNetAssetValuePerSharebmyfalsenadurationPrime money market funds, net asset value, per share amount.falsefalsefalsefalsefalsefalsefalse<
IsBeginningBalance>falsefalsefalseterselabel1truefalsefalse11falsetruefalsefalsefalseEPSus-types:perShareItemTypedecimalPrime money market funds, net asset value, per share amount.No authoritative reference available.falsetrue13FAIR VALUE MEASUREMENT (Narrative) (Details) (USD $)MillionsUnKnownNoRoundingUnKnownfalsetrue
