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Inventories (Details) - USD ($)
$ in Millions
Jul. 04, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]    
Work in process $ 3,986 $ 3,990
Raw materials 1,587 1,712
Finished goods 28 30
Pre-owned aircraft 202 13
Total inventories $ 5,803 $ 5,745