LEGAL PROCEEDINGS AND CONTINGENCIES (Details) - Dec. 31, 2019 $ in Millions, $ in Millions	USD ($) lawsuits	AUD ($) lawsuits
CAR T Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Royalty Income, Nonoperating	$ 585.0
Pending Royalty Rate	27.60%	27.60%
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	$ 311.0
Abilify Product Liability [Member]
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Pending Claims, Number | lawsuits	175	175
Byetta Product Liability Litigation [Member]
Legal Proceedings And Contingencies [Line Items]
Loss Contingency, Pending Claims, Number | lawsuits	580	580
Cercla Matters [Member]
Legal Proceedings And Contingencies [Line Items]
Loss contingency, estimate of possible loss	$ 68.6