LEGAL PROCEEDINGS AND CONTINGENCIES (Details)	3 Months Ended
	Mar. 31, 2021 USD ($) lawsuits numberOfPlaintiffs
Anti-PD-1 Antibody Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Patents Allegedly Infringed, Number	6
Eliquis Patent Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Patents Allegedly Infringed, Number	2
Loss Contingency, Number of Plaintiffs	25
Plavix Australia Intellectual Property [Member] | Australia, Dollars
Legal Proceedings And Contingencies [Line Items]
Loss contingency, Estimate of possible loss | $	$ 449,000,000
Plavix Australia Intellectual Property [Member] | United States of America, Dollars
Legal Proceedings And Contingencies [Line Items]
Loss contingency, Estimate of possible loss | $	$ 340,000,000
Abilify Product Liability [Member]
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	20
Byetta Product Liability Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Number of Plaintiffs | numberOfPlaintiffs	2,250
Loss Contingency, Pending Claims, Number	590
Securities Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	2
Cercla Matters [Member]
Legal Proceedings And Contingencies [Line Items]
Loss contingency, Estimate of possible loss | $	$ 77,000,000
Abilify Product Liability Litigation
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	2,500
Abilify Product Liability Litigation | Dismissed
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Number of Plaintiffs | numberOfPlaintiffs	3,900
Loss Contingency, Pending Claims, Number	2,700
Onglyza Product Liability Litigation
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Number of Plaintiffs | numberOfPlaintiffs	280
Celgene Securities Litigation
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	2
Upfront, milestone and other licensing receipts [Member] | CAR T Kite Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Loss contingency, Estimate of possible loss | $	$ 1,200,000,000
Royalty [Member] | CAR T Kite Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Loss contingency, Estimate of possible loss | $	$ 0.276