Segment, Geographic and Other Revenue Information - Revenues By Geographic Area (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[1]	$ 11,801	$ 13,264	$ 23,829	$ 26,382
Percentage Change In Revenue		(11.00%)		(10.00%)
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		$ 5,402	6,335	$ 11,053	12,510
Percentage Change In Revenue		(15.00%)		(12.00%)
Developed Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[2]	$ 2,088	2,228	$ 4,009	4,315
Percentage Change In Revenue	[2]	(6.00%)		(7.00%)
Developed Rest Of World [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[3]	$ 1,552	1,639	$ 3,008	3,174
Percentage Change In Revenue	[3]	(5.00%)		(5.00%)
Emerging Markets [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[4]	$ 2,759	$ 3,062	$ 5,759	$ 6,383
Percentage Change In Revenue	[4]	(10.00%)		(10.00%)

[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 second quarter of 2020 and $1.8 billion in the second quarter of 2019, and were $3.2 billion in the first six months of 2020 and $3.5 billion in the first six months of 2019.

[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, Africa, the Middle East, Central Europe and Turkey.