ALLIANCES AND COLLABORATIONS (Gilead) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Alliances and Collaborations Statement [Line Items]
Net sales	$ 4,443	$ 5,434	$ 9,694	$ 10,445
Equity in net loss of affiliates	53	62	110	144
Gilead [Member] | Bulk efavirenz component of ATRIPLA [Member]
Alliances and Collaborations Statement [Line Items]
Net sales	323	298	645	569
Equity in net loss of affiliates	$ 4	$ 3	$ 8	$ 8