RESTRUCTURING (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Restructuring Charges [Abstract]
Workforce reduction of manufacturing, selling, administrative, and research and development personnel	1,205	822	995
Employee termination benefits	$ 145	$ 85	$ 102
Other exit costs	29	31	11
Provision for restructuring	174	116	113
Liability at beginning of year	77	126	173
Charges	178	128	121
Change in estimates	(4)	(12)	(8)
Foreign currency translation	(1)	2	(5)
Amylin acquisition	26
Spending	(109)	(167)	(155)
Liability at end of year	$ 167	$ 77	$ 126