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Segment, Geographic and Other Revenue Information - Revenues By Geographic Area - Footnotes (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
Developed Europe [Member] |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |
Revenues | [2] | 2,163 | 2,218 | 6,309 | 6,982
Euro Member Countries, Euro [Member] | Developed Europe [Member] |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |
Revenues |  | $ 1,700 | $ 1,700 | $ 5,000 | $ 5,300
[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 $1.7 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.

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