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Goodwill and Other Intangible Assets-Goodwill (Detail) (USD $)
In Millions
 6 Months Ended
Jul. 03, 2011
Goodwill [Line Items]  
Balance,December 31, 2010 $ 43,928
Additions 791 [1]
Other 388 [2]
Balance, July 3, 2011 45,107
Animal Health and Consumer Healthcare [Member]
  
Goodwill [Line Items]  
Balance,December 31, 2010 2,449
Other 16 [2]
Balance, July 3, 2011 2,465
Nutrition [Member]
  
Goodwill [Line Items]  
Balance,December 31, 2010 496
Other 10 [2]
Balance, July 3, 2011 506
To be Allocated [Member]
  
Goodwill [Line Items]  
Balance,December 31, 2010 40,983 [3]
Additions 791 [1],[3]
Other 362 [2],[3]
Balance, July 3, 2011 $ 42,136 [3]
[1] Relates to our acquisition of King and is subject to change until we complete the recording of the assets acquired and liabilities assumed from King (see Note 3. Acquisition of King Pharmaceuticals, Inc.). The allocation of King goodwill among our reporting units has not yet been completed, but will be completed within one year of the acquisition date.
[2] Primarily reflects the impact of foreign exchange.
[3] The amount to be allocated includes the former Biopharmaceutical goodwill (see below), as well as newly acquired goodwill from our acquisition of King, for which the allocation to reporting units is pending (see Note 3. Acquisition of King Pharmaceuticals, Inc. for additional information).