LEGAL PROCEEDINGS AND CONTINGENCIES (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019 USD ($) lawsuits
Plavix Australia Intellectual Property [Member] | Australia, Dollars
Legal Proceedings And Contingencies [Line Items]
Loss contingency, Estimate of possible loss | $	$ 449
Plavix Australia Intellectual Property [Member] | United States of America, Dollars
Legal Proceedings And Contingencies [Line Items]
Loss contingency, Estimate of possible loss | $	$ 313
Byetta Product Liability Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	560
Abilify Product Liability [Member]
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	2,000
Eliquis Product Liability [Member]
Legal Proceedings And Contingencies [Line Items]
Number of cases dismissed	200
Eliquis Product Liability [Member] | CANADA
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	1
Securities Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	2
Acquisition of Celgene Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	13
Cercla Matters [Member]
Legal Proceedings And Contingencies [Line Items]
Loss contingency, Estimate of possible loss | $	$ 66
BMS [Member] | Acquisition of Celgene Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	5