LEGAL PROCEEDINGS AND CONTINGENCIES (Details) $ in Millions	6 Months Ended
	Jun. 30, 2018 USD ($) patents lawsuits
Anti-PD-1 Antibody Patent Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Number of patents | patents	5
Number of scientists	2
Eliquis Patent Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Number of patents | patents	2
Number of companies seeking approval of generic versions of Eliquis	25
Plavix Product Liability Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Number of lawsuits | lawsuits	5,000
Number of lawsuits dismissed | lawsuits	3,300
Byetta Product Liability Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Number of lawsuits	530
Number of current plaintiffs	2,100
Abilify Product Liability [Member]
Legal Proceedings And Contingencies [Line Items]
Number of lawsuits	900
Eliquis Product Liability Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Number of lawsuits	45
Number of cases dismissed	200
Onglyza [Member]
Legal Proceedings And Contingencies [Line Items]
Number of current plaintiffs	200
Shareholder Derivative Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Number of lawsuits	3
Litigation Settlement, Amount Awarded to Other Party	$ 14.7
Number of lawsuits dismissed	3
Number of appeals	1
Environmental Proceedings Cercla Matters [Member]
Legal Proceedings And Contingencies [Line Items]
Loss contingency, Estimate of possible loss	$ 65.0
Australia, Dollars | Plavix Australia Intellectual Property [Member]
Legal Proceedings And Contingencies [Line Items]
Loss contingency, Estimate of possible loss	449.0
United States of America, Dollars | Plavix Australia Intellectual Property [Member]
Legal Proceedings And Contingencies [Line Items]
Loss contingency, Estimate of possible loss	$ 333.0