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INVENTORIES (Details) - USD ($)
$ in Millions
Mar. 29, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Materials, spares and supplies $ 521 $ 532
Work-in-process 2,717 2,783
Finished goods 301 304
Total inventories 3,539 3,619
Capitalized contract cost $ 519 $ 493