Segment, Geographic and Other Revenue Information - Revenues By Geographic Area - Footnotes (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[1]	$ 13,466	$ 12,896	$ 26,373	$ 25,675
Developed Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[2]	2,334	2,124	4,426	4,145
Euro Member Countries, Euro [Member] | Developed Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		$ 1,900	$ 1,700	$ 3,600	$ 3,300

[1] Amounts may not add due to rounding.

[2] Developed Europe region includes the following markets: Western Europe, Scandinavian countries and Finland. Revenues denominated in euros were $1.9 billion and $1.7 billion in the second quarter of 2018 and 2017, respectively, and $3.6 billion and $3.3 billion in the first six months of 2018 and 2017, respectively.