Inventories (Details) - USD ($) $ in Millions	Sep. 28, 2019	Dec. 29, 2018
Inventories
Finished goods	$ 1,738	$ 1,662
Work in process	1,880	1,356
Raw materials and components	818	800
Total inventories	$ 4,436	$ 3,818

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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