2.2.0.25truefalse42407 - Disclosure - FINANCIAL INSTRUMENTS (Earnings from Interest Rate Swaps that Qualified as Fair Value Hedges) (Details)truefalseIn Millionsfalse1falsefalseUSDfalsefalse1/1/2010 - 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$2falsefalseUSDfalsefalse1/1/2009 - 12/31/2009 USD ($) USD ($) / shares $Duration_1_1_2009_To_12_31_2009http://www.sec.gov/CIK0000014272duration2009-01-01T00:00:002009-12-31T00:00:00Unit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit15Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit12Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$3falsefalseUSDfalsefalse1/1/2008 - 12/31/2008 USD ($) USD ($) / shares $Duration_1_1_2008_To_12_31_20083http://www.sec.gov/CIK0000014272duration2008-01-01T00:00:002008-12-31T00:00:00Unit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit15Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit12Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2false0us-gaap_InterestExpenseus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-145000000-145falsetruefalsefalsefalse2truefalsefalse-184000000-184falsetruefalsefalsefalse3truefalsefalse-310000000-310 falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cost of borrowed funds accounted for as interest that was charged against earnings during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 21 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Chapter V -Section 563c.102 -Paragraph 9 -Subsection II Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 9 -Article 9 falsefalse3false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.bms.com/taxonomy/role/disclosurefinancialinstrumentsearningsfrominterestrateswapsthatqualifiedasfairvaluehedgesdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalseUSDtruefalse{us-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxis} : Fair Value Hedging [Member] {us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxis} : Interest Rate Swaps [Member] 1/1/2010 - 12/31/2010 USD ($) $Duration_1_1_2010_To_12_31_20102246http://www.sec.gov/CIK0000014272duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseFair Value Hedging [Member]us-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueHedgingMemberus-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxisexplicitMemberfalsefalseInterest Rate Swaps [Member]us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxisxbrldihttp://xbrl.org/2006/xbrldibmy_InterestRateSwapsMemberus-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5falsefalseUSDtruefalse{us-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxis} : Fair Value Hedging [Member] {us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxis} : Interest Rate Swaps [Member] 1/1/2009 - 12/31/2009 USD ($) $Duration_1_1_2009_To_12_31_20092210http://www.sec.gov/CIK0000014272duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseFair Value Hedging [Member]us-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueHedgingMemberus-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxisexplicitMemberfalsefalseInterest Rate Swaps [Member]us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxisxbrldihttp://xbrl.org/2006/xbrldibmy_InterestRateSwapsMemberus-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$6falsefalseUSDtruefalse{us-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxis} : Fair Value Hedging [Member] {us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxis} : Interest Rate Swaps [Member] 1/1/2008 - 12/31/2008 USD ($) $Duration_1_1_2008_To_12_31_2008442http://www.sec.gov/CIK0000014272duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseFair Value Hedging [Member]us-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueHedgingMemberus-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxisexplicitMemberfalsefalseInterest Rate Swaps [Member]us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxisxbrldihttp://xbrl.org/2006/xbrldibmy_InterestRateSwapsMemberus-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalse4false0us-gaap_InterestExpenseus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-128000000-128falsefalsefalsefalsefalse2truefalsefalse-118000000-118falsefalsefalsefalsefalse3truefalsefalse-48000000-48falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cost of borrowed funds accounted for as interest that was charged against earnings during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 21 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Chapter V -Section 563c.102 -Paragraph 9 -Subsection II Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 9 -Article 9 falsefalse5false0bmy_InterestRateSwapsTotalEarningsImpactbmyfalsecreditdurationThis element represents the aggregate amount recognized in earnings during the period related to interest rate swaps that...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse-161000000-161falsefalsefalsefalsefalse2truefalsefalse-143000000-143falsefalsefalsef alsefalse3truefalsefalse-49000000-49falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element represents the aggregate amount recognized in earnings during the period related to interest rate swaps that qualified as fair value hedges.No authoritative reference available.fals efalse6false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.bms.com/taxonomy/role/disclosurefinancialinstrumentsearningsfrominterestrateswapsthatqualifiedasfairvaluehedgesdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse7falsefalseUSDtruefalse{us-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxis} : Fair Value Hedging [Member] {us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxis} : Interest Rate Swaps [Member] {dei_LegalEntityAxis} : Amortization Of Swap Termination Basis Adjustment [Member] 1/1/2010 - 12/31/2010 USD ($) $Duration_1_1_2010_To_12_31_20102236http://www.sec.gov/CIK0000014272duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseFair Value Hedging [Member]us-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueHedgingMemberus-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxisexplicitMemberfalsefalseInterest Rate Swaps [Member]us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxisxbrldihttp://xbrl.org/2006/xbrldibmy_InterestRateSwapsMemberus-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxisexplicitMemberfalsefalseAmortization Of Swap Termination Basis Adjustment [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldibmy_AmortizationOfSwapTerminationBasisAdjustmentMemberdei_LegalEntityAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$8falsefalseUSDtruefalse{us-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxis} : Fair Value Hedging [Member] {us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxis} : Interest Rate Swaps [Member] {dei_LegalEntityAxis} : Amortization Of Swap Termination Basis Adjustment [Member] 1/1/2009 - 12/31/2009 USD ($) $Duration_1_1_2009_To_12_31_2009229http://www.sec.gov/CIK0000014272duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseFair Value Hedging [Member]us-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueHedgingMemberus-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxisexplicitMemberfalsefalseInterest Rate Swaps [Member]us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxisxbrldihttp://xbrl.org/2006/xbrldibmy_InterestRateSwapsMemberus-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxisexplicitMemberfalsefalseAmortization Of Swap Termination Basis Adjustment [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldibmy_AmortizationOfSwapTerminationBasisAdjustmentMemberdei_LegalEntityAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$9falsefalseUSDtruefalse{us-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxis} : Fair Value Hedging [Member] {us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxis} : Interest Rate Swaps [Member] {dei_LegalEntityAxis} : Amortization Of Swap Termination Basis Adjustment [Member] 1/1/2008 - 12/31/2008 USD ($) $Duration_1_1_2008_To_12_31_200844http://www.sec.gov/CIK0000014272duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseFair Value Hedging [Member]us-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueHedgingMemberus-gaap_DerivativeInstrumentsGainLossByIncomeStatementLocationAxisexplicitMemberfalsefalseInterest Rate Swaps [Member]us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxisxbrldihttp://xbrl.org/2006/xbrldibmy_InterestRateSwapsMemberus-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsMajorTypesOfTradingSecuritiesAndAssetsAxisexplicitMemberfalsefalseAmortization Of Swap Termination Basis Adjustment [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldibmy_AmortizationOfSwapTerminationBasisAdjustmentMemberdei_LegalEntityAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalse7false0bmy_InterestRateSwapPretaxIncomeExpenseRecognizedbmyfalsedebitdurationThis element represents the aggregate pre-tax income/expense recognized during the period related to interest rate swap...falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-33000000-33falsetruefalsefalsefalse2truefalsefalse-25000000-25falsetruefalsefalsefalse3truefalsefalse-1000000-1falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element represents the aggregate pre-tax income/expense recognized during the period related to interest rate swap terminations. This includes the amortization of the basis adjustment from swap terminations which is included in interest expense and the gain on swap terminations recognized in other income/expense.No authoritative reference available.falsefalse36FINANCIAL INSTRUMENTS (Earnings from Interest Rate Swaps that Qualified as Fair Value Hedges) (Details) (USD $)MillionsUnKnownUnKnownUnKnownfalsetrue