GOODWILL (Details) (USD $) In Millions			9 Months Ended
	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2011 Amira Pharmaceuticals [Member]	Sep. 30, 2011 Medarex, Inc. [Member]
Goodwill [Line Items]
Goodwill, Balance at December 31, 2010	$ 5,564	$ 5,233
Amira acquisition (Note 5)			267
Other adjustment				64
Goodwill, Balance at September 30, 2011	5,564	5,233
Out-of-period adjustment to correct intangible assets in the purchase price allocation of an acquisition				98
Out-of-period adjustment to correct deferred tax assets in the purchase price allocation of an acquisition				$ 34