Acquisitions Goodwill and Acquired Intangible Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended					3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Kiva Systems, Inc	May 31, 2012 Kiva Systems, Inc	Jun. 30, 2011 Kiva Systems, Inc	Mar. 31, 2011 One of acquired companies	Jun. 30, 2012 One of acquired companies
Business Acquisition [Line Items]
Business acquisition, purchase price		$ 686		$ 686	$ 678	$ 678	$ 686
Equity-method investment activity, net of tax	(30)	15	59	(2)				6
Net sales									2
Net losses									$ (25)