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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 | 9 Months Ended
--- | --- | ---
Oct. 03, 2021 | Sep. 27, 2020 | Oct. 03, 2021 | Sep. 27, 2020
Sales by geographic area |  |  |  |
Sales | $ 23,338 | $ 21,082 | $ 68,971 | $ 60,109
Percentage Change In Sales By Geographic Area | 10.70% |  | 14.70% |
United States |  |  |  |
Sales by geographic area |  |  |  |
Sales | $ 11,963 | 11,086 | $ 34,993 | 31,324
Percentage Change In Sales By Geographic Area | 7.90% |  | 11.70% |
Europe |  |  |  |
Sales by geographic area |  |  |  |
Sales | $ 5,587 | 4,819 | $ 16,669 | 13,709
Percentage Change In Sales By Geographic Area | 15.90% |  | 21.60% |
Western Hemisphere, excluding U.S. |  |  |  |
Sales by geographic area |  |  |  |
Sales | $ 1,500 | 1,296 | $ 4,291 | 3,931
Percentage Change In Sales By Geographic Area | 15.70% |  | 9.20% |
Asia-Pacific, Africa |  |  |  |
Sales by geographic area |  |  |  |
Sales | $ 4,288 | $ 3,881 | $ 13,018 | $ 11,145
Percentage Change In Sales By Geographic Area | 10.50% |  | 16.80% |

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