Segment, Geographic and Other Revenue Information - Revenues By Geographic Area (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[1]	$ 13,168	$ 13,045	$ 38,843	$ 39,196
Percentage Change In Revenue		1.00%		(1.00%)
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		$ 6,534	6,530	$ 19,516	19,561
Percentage Change In Revenue		0.00%		0.00%
Developed Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[2]	$ 2,163	2,218	$ 6,309	6,982
Percentage Change In Revenue	[2]	(2.00%)		(10.00%)
Developed Rest Of World [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[3]	$ 1,632	1,711	$ 4,797	4,940
Percentage Change In Revenue	[3]	(5.00%)		(3.00%)
Emerging Markets [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[4]	$ 2,839	$ 2,586	$ 8,222	$ 7,714
Percentage Change In Revenue	[4]	10.00%		7.00%

[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 $1.7 billion in both the third quarter of 2017 and 2016, and $5.0 billion and $5.3 billion in the first nine months of 2017 and 2016, respectively.

[3] Developed Rest of World region includes the following markets: Japan, Canada, Australia, South Korea and New Zealand.

[4] Emerging Markets region includes, but is not limited to, the following markets: Asia (excluding Japan and South Korea), Latin America, Africa, Eastern Europe, Central Europe, the Middle East and Turkey.