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GOODWILL AND OTHER INTANGIBLE ASSETS GOODWILL AND OTHER INTANGIBLE ASSETS (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Mar. 31, 2014
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]        
Future estimated amortization, 2015 $ 220us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths      
Future estimated amortization, 2016 210us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo      
Future estimated amortization, 2017 200us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree      
Future estimated amortization, 2018 150us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour      
Future estimated amortization, 2019 110us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive      
Future estimated amortization, After 2019 583us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive      
Schedule of Goodwill and Intangible Assets [Line Items]        
Goodwill 7,027us-gaap_Goodwill 7,096us-gaap_Goodwill    
Total other intangible assets, gross 4,982us-gaap_IntangibleAssetsGrossExcludingGoodwill 5,436us-gaap_IntangibleAssetsGrossExcludingGoodwill    
Other intangible assets accumulated amortization (3,229)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization (3,118)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization    
Other intangible assets 1,753us-gaap_IntangibleAssetsNetExcludingGoodwill 2,318us-gaap_IntangibleAssetsNetExcludingGoodwill    
Goodwill allocated to sale of business   550us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwill   600us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwill
Amortization of intangible assets 286us-gaap_AmortizationOfIntangibleAssets 858us-gaap_AmortizationOfIntangibleAssets 607us-gaap_AmortizationOfIntangibleAssets  
Impairment of other intangible assets 380us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill   2,100us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill  
Impairment of indefinite-lived intangible assets     1,830us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill  
Impairment of finite-lived intangible assets 29us-gaap_ImpairmentOfIntangibleAssetsFinitelived   38us-gaap_ImpairmentOfIntangibleAssetsFinitelived  
Licenses [Member]        
Schedule of Goodwill and Intangible Assets [Line Items]        
Finite-lived intangible assets, net 1,090us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember		 1,162us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember		    
Developed technology rights [Member]        
Schedule of Goodwill and Intangible Assets [Line Items]        
Finite-lived intangible assets, net 2,358us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TechnologyBasedIntangibleAssetsMember		 2,486us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TechnologyBasedIntangibleAssetsMember		    
Impairment of finite-lived intangible assets   120us-gaap_ImpairmentOfIntangibleAssetsFinitelived
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TechnologyBasedIntangibleAssetsMember		    
Capitalized Software [Member]        
Schedule of Goodwill and Intangible Assets [Line Items]        
Finite-lived intangible assets, net 1,254us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_ComputerSoftwareIntangibleAssetMember		 1,240us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_ComputerSoftwareIntangibleAssetMember		    
In-process research and development [Member]        
Schedule of Goodwill and Intangible Assets [Line Items]        
Indefinite-lived intangible assets acquired 280us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_InProcessResearchAndDevelopmentMember		 548us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_InProcessResearchAndDevelopmentMember		    
Peginterferon lambda [Member]        
Schedule of Goodwill and Intangible Assets [Line Items]        
Impairment of indefinite-lived intangible assets 310us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= bmy_PeginterferonlambdaimpairmentMember		      
BMS-986094 [Member]        
Schedule of Goodwill and Intangible Assets [Line Items]        
Impairment of indefinite-lived intangible assets   $ 1,830us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= bmy_BMS986094impairmentMember		    
Minimum [Member] | Licenses [Member]        
Schedule of Goodwill and Intangible Assets [Line Items]        
Useful life of intangible asset 5 years 0 months 0 days      
Minimum [Member] | Developed technology rights [Member]        
Schedule of Goodwill and Intangible Assets [Line Items]        
Useful life of intangible asset 9 years 0 months 0 days      
Minimum [Member] | Capitalized Software [Member]        
Schedule of Goodwill and Intangible Assets [Line Items]        
Useful life of intangible asset 3 years 0 months 0 days      
Maximum [Member] | Licenses [Member]        
Schedule of Goodwill and Intangible Assets [Line Items]        
Useful life of intangible asset 15 years 0 months 0 days      
Maximum [Member] | Developed technology rights [Member]        
Schedule of Goodwill and Intangible Assets [Line Items]        
Useful life of intangible asset 15 years 0 months 0 days      
Maximum [Member] | Capitalized Software [Member]        
Schedule of Goodwill and Intangible Assets [Line Items]        
Useful life of intangible asset 10 years 0 months 0 days