RESTRUCTURING (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
Restructuring Charges [Abstract]
Workforce reduction of manufacturing, selling, administrative, and research and development personnel	185	50	480	700
Employee termination benefits	$ 21	$ 4	$ 56	$ 72
Other exit costs	8	4	15	20
Provision for restructuring	29	8	71	92
Liability at January 1			77	126
Charges	77	94	77	94
Change in estimates			(6)	(2)
Foreign currency translation			(1)	1
Amylin acquisition			26
Spending			(66)	(119)
Liability at September 30	$ 107	$ 100	$ 107	$ 100