Segment, Geographic and Other Revenue Information - Revenues By Geographic Area (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 29, 2019	Sep. 30, 2018	Sep. 29, 2019	Sep. 30, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[1]	$ 12,680	$ 13,298	$ 39,062	$ 39,670
Percentage Change In Revenue		(5.00%)		(2.00%)
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		$ 5,850	6,361	$ 18,360	18,861
Percentage Change In Revenue		(8.00%)		(3.00%)
Developed Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[2]	$ 2,135	2,231	$ 6,450	6,657
Percentage Change In Revenue	[2]	(4.00%)		(3.00%)
Developed Rest Of World [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[3]	$ 1,585	1,640	$ 4,758	4,795
Percentage Change In Revenue	[3]	(3.00%)		(1.00%)
Emerging Markets [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[4]	$ 3,110	$ 3,066	$ 9,493	$ 9,358
Percentage Change In Revenue	[4]	1.00%		1.00%

[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 the third quarter of 2019 and $1.8 billion in the third quarter of 2018, and were $5.2 billion in the first nine months of 2019 and $5.3 billion in the first nine months of 2018.

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

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