v2.4.0.8
Joint Ventures and Other Equity Method Affiliates - Equity Income from Affiliates (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Equity Income from Affiliates [Line Items]      
Equity income from affiliates $ 404 $ 642 $ 610
Other [Member]
      
Equity Income from Affiliates [Line Items]      
Equity income from affiliates 52 [1] 21 [1] 36 [1]
AstraZeneca LP [Member]
      
Equity Income from Affiliates [Line Items]      
Equity income from affiliates $ 352 $ 621 $ 574
[1] Primarily reflects results from Sanofi Pasteur MSD and Johnson & Johnson°Merck Consumer Pharmaceuticals Company (which was disposed of on September 29, 2011).