LEGAL PROCEEDINGS AND CONTINGENCIES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended					12 Months Ended												9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Baraclude [Member]	Sep. 30, 2013 Baraclude [Member]	Sep. 30, 2014 Baraclude [Member]	Sep. 30, 2013 Baraclude [Member]	Dec. 31, 2013 Baraclude [Member] South Korea [Member]	Aug. 31, 2013 Atripla Intellectual Property Litigation [Member]	Mar. 31, 2010 Atripla Intellectual Property Litigation [Member]	Jan. 31, 2010 Atripla Intellectual Property Litigation [Member]	Apr. 30, 2009 Atripla Intellectual Property Litigation [Member]	Dec. 31, 2013 Baraclude Intellectual Property Litigation [Member]	Aug. 31, 2010 Baraclude Intellectual Property Litigation [Member]	Sep. 30, 2014 AWP Litigation [Member]	Sep. 30, 2010 AWP Litigation [Member]	Sep. 30, 2014 Qui Tam Litigation [Member]	Sep. 30, 2014 Plavix Product Liability Litigation [Member]	Sep. 30, 2014 Reglan Product Liability [Member]	Sep. 30, 2014 Byetta Product Liability Litigation [Member]	Sep. 30, 2014 Environmental Proceedings Cercla Matters [Member]	Sep. 30, 2014 Environmental Proceedings New Brunswick [Member]	Oct. 30, 2011 Environmental Proceedings New Brunswick [Member]	May 31, 2008 Environmental Proceedings New Brunswick [Member]	Sep. 30, 2014 Environmental Proceedings North Brunswick [Member] payment
Legal Proceedings And Contingencies [Line Items]
Number of patents owned											6		15
Number of patents challenged												8	2		1
Number of lawsuits											2					2					400		500	200	300
Number Of Interim Payments																										2
Number of patent infringement lawsuits											2
Settlement relating to efavirenz polymorph patents										2
Loss contingency, Estimate of possible loss																	$ 28					$ 63
Number of plaintiffs settled																					510
Number of current plaintiffs																			6,300	3,000	1,900
Number of sales representatives																		3
Litigation settlement, Gross																										4
Total revenues	$ 3,921	$ 4,065	$ 11,621	$ 11,944	$ 325	$ 378	$ 1,100	$ 1,115	$ 158					$ 289