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Acquisitions, Divestitures, Collaborative Arrangements and Equity-Method Investments - Collaborative Arrangements (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]      
Revenues-Revenues $ 1,029 [1] $ 710 [1] $ 676 [1]
Revenues-Alliance revenues 3,630 [2] 4,084 [2] 2,925 [2]
Total revenues from collaborative arrangements 4,659 4,794 3,601
Cost of sales (420) [3] (124) [3] (175) [3]
Selling, informational and administrative expenses (237) [4] (131) [4] 10 [4]
Research and development expenses (299) [5] (316) [5] (361) [5]
Other deductions-net $ 34 $ 37 $ 37
[1] Represents sales to our partners of products manufactured by us.
[2] Substantially all relate to amounts earned from our partners under co-promotion agreements.
[3] Primarily relates to royalties earned by our partners and cost of sales associated with inventory purchased from our partners.
[4] Represents net reimbursements from our partners/(to our partners) for selling, informational and administrative expenses incurred.
[5] Primarily related to net reimbursements, as well as upfront payments and milestone payments earned by our partners. The upfront and milestone payments were as follows: $210 million in 2011, $147 million in 2010 and $150 million in 2009.