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Inventories (Tables)
12 Months Ended
Dec. 31, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current
Inventories at December 31 consisted of the following:
20202019
Long-term contracts in progress$823 $1,187 
Commercial aircraft programs70,153 66,016 
Commercial spare parts, used aircraft, general stock materials and other10,739 9,419 
Total$81,715 $76,622