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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
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Apr. 01, 2018 | Apr. 02, 2017
Sales by geographic area |  |
Sales | $ 20,009 | $ 17,766
Percentage Change In Sales By Geographic Area | 12.60% |
United States |  |
Sales by geographic area |  |
Sales | $ 9,951 | 9,378
Percentage Change In Sales By Geographic Area | 6.10% |
Europe |  |
Sales by geographic area |  |
Sales | $ 4,797 | 3,858
Percentage Change In Sales By Geographic Area | 24.30% |
Western Hemisphere, excluding U.S. |  |
Sales by geographic area |  |
Sales | $ 1,567 | 1,454
Percentage Change In Sales By Geographic Area | 7.80% |
Asia-Pacific, Africa |  |
Sales by geographic area |  |
Sales | $ 3,694 | $ 3,076
Percentage Change In Sales By Geographic Area | 20.10% |

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