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Reimbursements paid to or received from collaboration partner for commercialization expense included principally in advertising and product promotion and selling, general and administrative expenses.

No definition available.

Name:	bmy_CommercializationExpenseReimbursementsToFromCollaboration
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Data Type:	xbrli:monetaryItemType
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The percentage of certain development expenses reimbursed to the Company by alliances and collaborations.

No definition available.

Name:	bmy_ReimbursementOfDevelopmentCostsFromCollaborationsPercentage
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Data Type:	num:percentItemType
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Period Type:	instant

The amount of development expenses reimbursed by the collaboration partner pursuant to the terms of the agreement that are netted in research and development expense.

No definition available.

Name:	bmy_ReimbursementOfDevelopmentExpenseToFromCollaborations
Namespace Prefix:	bmy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of previously capitalized upfront, milestone and other licensing payments included in intangible assets, which are amortized into earnings over the remaining life of the agreement.

No definition available.

Name:	bmy_TotalUpfrontLicensingAndMilestonePayments
Namespace Prefix:	bmy_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Details

Name:	us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems
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Total carrying amount of consideration received or receivable as of the balance sheet date representing potential earnings that were not as yet recognized as revenue or other forms of income in conformity with GAAP.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 13

-Section A

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 13.A.4(a).Q1 Response)

-URI http://asc.fasb.org/extlink&oid=6600647&loc=d3e214044-122780

Name:	us-gaap_DeferredRevenueAndCredits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 03

-Paragraph 1

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688