Segment, Geographic and Other Revenue Information - Revenues By Geographic Area (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 28, 2014		Sep. 29, 2013		Sep. 28, 2014		Sep. 29, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 12,361	[1]	$ 12,643	[1]	$ 36,487	[1]	$ 38,026	[1]
Developed Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,837	[2]	2,785	[2]	8,641	[2]	8,502	[2]
Euro Member Countries, Euro | Developed Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 2,200		$ 2,100		$ 6,600		$ 6,400

[1] Amounts may not add due to rounding.

[2] Developed Europe region includes the following markets: Western Europe, Finland and the Scandinavian countries. Revenues denominated in euros were $2.2 billion and $2.1 billion in the third quarter of 2014 and 2013, respectively, and $6.6 billion and $6.4 billion in the first nine months of 2014 and 2013, respectively.