Segment, Geographic and Other Revenue Information - Revenues By Geographic Area - Footnotes (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[1]	$ 11,853	$ 12,773	$ 22,717	$ 24,126
Developed Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[2]	2,380	3,008	4,691	5,803
Euro Member Countries, Euro | Developed Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		$ 1,800	$ 2,300	$ 3,600	$ 4,500

[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 $1.8 billion and $2.3 billion in the second quarter of 2015 and 2014, respectively, and $3.6 billion and $4.5 billion in the first six months of 2015 and 2014, respectively.