Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2021	Feb. 01, 2022	Jun. 30, 2021
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-01136
Entity Registrant Name	BRISTOL-MYERS SQUIBB COMPANY
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	22-0790350
Entity Address, Address Line One	430 E. 29th Street, 14FL
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10016
City Area Code	212
Local Phone Number	546-4000
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 148,383,155,646
Entity Common Stock, Shares Outstanding		2,179,712,820
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE: Portions of the definitive proxy statement for the registrant’s Annual Meeting of Shareholders to be filed within 120 days after the conclusion of the registrant's fiscal year ended December 31, 2021 with the U.S. Securities and Exchange Commission pursuant to Regulation 14A of the Securities Exchange Act of 1934, as amended, are incorporated by reference into Part III of this Annual Report on Form 10-K to the extent described therein.
Entity Central Index Key	0000014272
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Small Business	false
Common Stock, $0.10 Par Value
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.10 Par Value
Trading Symbol	BMY
Security Exchange Name	NYSE
1.000% Notes due 2025
Document Information [Line Items]
Title of 12(b) Security	1.000% Notes due 2025
Trading Symbol	BMY25
Security Exchange Name	NYSE
1.750% Notes due 2035
Document Information [Line Items]
Title of 12(b) Security	1.750% Notes due 2035
Trading Symbol	BMY35
Security Exchange Name	NYSE
Celgene Contingent Value Rights
Document Information [Line Items]
Title of 12(b) Security	Celgene Contingent Value Rights
Trading Symbol	CELG RT
Security Exchange Name	NYSE