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Inventories (Details) - USD ($) $ in Millions | Apr. 01, 2018 | Dec. 31, 2017
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Summary of Inventories |  |
Raw materials and supplies | $ 1,200 | $ 1,140
Goods in process | 2,339 | 2,317
Finished goods | 5,475 | 5,308
Total inventories | 9,014 | $ 8,765
LifeScan | Discontinued Operations, Held-for-sale or Disposed of by Sale |  |
Summary of Inventories |  |
Assets held for sale, current | $ 100 |

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