Acquisitions Goodwill and Acquired Intangible Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended				1 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Several companies	May 31, 2012 Kiva Systems, Inc	Dec. 31, 2012 Kiva Systems, Inc	Dec. 31, 2011 Series of Individually Immaterial Business Acquisitions	Dec. 31, 2011 One of acquired companies
Business Acquisition [Line Items]
Aggregate purchase price				$ 195	$ 678		$ 771
Acquired goodwill	2,655	2,552	1,955	103	560		615
Acquired intangible assets				83
Business acquisition, purchase price					678		771
Net sales						61
Operating loss						(62)
Equity-method investment activity, net of tax	(71)	(155)	(12)					6
Amortization expense for acquired intangibles	$ 168	$ 163	$ 149