BUSINESS SEGMENT INFORMATION (Net Sales of Key Products) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Segment Reporting Information [Line Items]
Net sales	$ 3,736	$ 5,345	$ 13,430	$ 15,790
PLAVIX [Member]
Segment Reporting Information [Line Items]
Net sales	64	1,788	2,498	5,415
AVAPRO AVALIDE [Member]
Segment Reporting Information [Line Items]
Net sales	95	216	419	757
ELIQUIS [Member]
Segment Reporting Information [Line Items]
Net sales			1
ABILIFY [Member]
Segment Reporting Information [Line Items]
Net sales	676	691	2,008	2,021
REYATAZ [Member]
Segment Reporting Information [Line Items]
Net sales	363	391	1,127	1,153
SUSTIVA Franchise [Member]
Segment Reporting Information [Line Items]
Net sales	370	359	1,144	1,073
BARACLUDE [Member]
Segment Reporting Information [Line Items]
Net sales	346	311	1,028	878
ERBITUX [Member]
Segment Reporting Information [Line Items]
Net sales	173	172	531	510
SPRYCEL [Member]
Segment Reporting Information [Line Items]
Net sales	263	211	738	576
YERVOY [Member]
Segment Reporting Information [Line Items]
Net sales	179	121	495	216
ORENCIA [Member]
Segment Reporting Information [Line Items]
Net sales	307	233	851	660
NULOJIX [Member]
Segment Reporting Information [Line Items]
Net sales	3		7	2
ONGLYZA KOMBIGLYZE [Member]
Segment Reporting Information [Line Items]
Net sales	178	127	511	320
BYETTA [Member]
Segment Reporting Information [Line Items]
Net sales	55		55
BYDUREON [Member]
Segment Reporting Information [Line Items]
Net sales	20		20
Mature Products And All Other [Member]
Segment Reporting Information [Line Items]
Net sales	$ 644	$ 725	$ 1,997	$ 2,209