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Acquisitions Goodwill and Acquired Intangible Assets - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Kiva Systems, Inc
May 31, 2012
Kiva Systems, Inc
Dec. 31, 2012
One of acquired companies
Dec. 31, 2011
Series of Individually Immaterial Business Acquisitions
Dec. 31, 2011
One of acquired companies
Business Acquisition [Line Items]                
Business acquisition, purchase price     $ 228 $ 678 $ 678   $ 771  
Net sales           61    
Net losses           (62)    
Equity-method investment activity, net of tax (155) (12) 7         6
Purchase price, acquired goodwill     111 560     615  
Purchase price, acquired intangible assets     91          
Amortization expense for acquired intangibles $ 163 $ 149 $ 105