BUSINESS SEGMENT INFORMATION (Net Sales of Key Products) (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
Segment Reporting Information [Line Items]
Net sales	$ 4,443	$ 5,434	$ 9,694	$ 10,445
PLAVIX [Member]
Segment Reporting Information [Line Items]
Net sales	741	1,865	2,434	3,627
AVAPRO AVALIDE [Member]
Segment Reporting Information [Line Items]
Net sales	117	251	324	541
ELIQUIS [Member]
Segment Reporting Information [Line Items]
Net sales	1		1
ABILIFY [Member]
Segment Reporting Information [Line Items]
Net sales	711	706	1,332	1,330
REYATAZ [Member]
Segment Reporting Information [Line Items]
Net sales	406	396	764	762
SUSTIVA Franchise [Member]
Segment Reporting Information [Line Items]
Net sales	388	371	774	714
BARACLUDE [Member]
Segment Reporting Information [Line Items]
Net sales	357	292	682	567
ERBITUX [Member]
Segment Reporting Information [Line Items]
Net sales	179	173	358	338
SPRYCEL [Member]
Segment Reporting Information [Line Items]
Net sales	244	193	475	365
YERVOY [Member]
Segment Reporting Information [Line Items]
Net sales	162	95	316	95
ORENCIA [Member]
Segment Reporting Information [Line Items]
Net sales	290	228	544	427
NULOJIX [Member]
Segment Reporting Information [Line Items]
Net sales	3	2	4	2
ONGLYZA KOMBIGLYZE [Member]
Segment Reporting Information [Line Items]
Net sales	172	112	333	193
Mature Products And All Other [Member]
Segment Reporting Information [Line Items]
Net sales	$ 672	$ 750	$ 1,353	$ 1,484