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Inventories (Details) - USD ($)
$ in Millions
Mar. 29, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Work in process $ 4,602 $ 4,419
Raw materials 1,684 1,733
Finished goods 475 30
Pre-owned aircraft 91 124
Total inventories $ 6,852 $ 6,306