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INVENTORIES (Details) - USD ($)
$ in Millions
Jun. 24, 2018
Dec. 31, 2017
Inventory Disclosure [Abstract]    
Materials, spares and supplies $ 446 $ 563
Work-in-process 2,074 1,823
Finished goods 518 492
Total inventories 3,038 2,878
Capitalized contract cost $ 508 $ 466