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INVENTORIES, NET (Details) - USD ($)
$ in Millions
Sep. 24, 2017
Dec. 31, 2016
Inventory Disclosure [Abstract]    
Work-in-process, primarily related to long-term contracts and programs in progress $ 7,720 $ 7,864
Spare parts, used aircraft and general stock materials 798 833
Other inventories 767 719
Total inventories 9,285 9,416
Less: customer advances and progress payments (4,482) (4,746)
Total inventories, net $ 4,803 $ 4,670