ALLIANCES AND COLLABORATIONS (Gilead) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Alliances and Collaborations Statement [Line Items]
Net sales	$ 3,831	$ 5,251
Equity in net loss of affiliates	36	57
Gilead [Member] \| Bulk efavirenz component of Atripla [Member]
Alliances and Collaborations Statement [Line Items]
Net sales	324	322
Equity in net loss of affiliates	$ 4	$ 4

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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