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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.

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