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Segments of Business and Geographic Areas - Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 02, 2017 | Jul. 03, 2016 | Jul. 02, 2017 | Jul. 03, 2016
Sales by geographic area |  |  |  |
Sales | $ 18,839 | $ 18,482 | $ 36,605 | $ 35,964
Percentage Change In Sales By Geographic Area | 1.90% |  | 1.80% |
UNITED STATES |  |  |  |
Sales by geographic area |  |  |  |
Sales | $ 9,726 | 9,572 | $ 19,104 | 18,893
Percentage Change In Sales By Geographic Area | 1.60% |  | 1.10% |
Europe |  |  |  |
Sales by geographic area |  |  |  |
Sales | $ 4,232 | 4,090 | $ 8,090 | 7,937
Percentage Change In Sales By Geographic Area | 3.50% |  | 1.90% |
Western Hemisphere, excluding U.S. |  |  |  |
Sales by geographic area |  |  |  |
Sales | $ 1,499 | 1,542 | $ 2,953 | 2,873
Percentage Change In Sales By Geographic Area | (2.80%) |  | 2.80% |
Asia-Pacific, Africa |  |  |  |
Sales by geographic area |  |  |  |
Sales | $ 3,382 | 3,278 | $ 6,458 | 6,261
Percentage Change In Sales By Geographic Area | 3.20% |  | 3.10% |
Medical Devices [Member] |  |  |  |
Sales by geographic area |  |  |  |
Sales | $ 6,726 | 6,409 | $ 13,019 | 12,518
Medical Devices [Member] | UNITED STATES |  |  |  |
Sales by geographic area |  |  |  |
Sales | $ 3,229 | $ 3,044 | $ 6,321 | $ 6,070

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