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INVENTORIES (Tables)
9 Months Ended
Sep. 27, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventories, Net
Inventories consisted of the following (in millions):
September 27,
2020
December 31,
2019
Materials, spares and supplies$567 $532 
Work-in-process
2,462 2,783 
Finished goods264 304 
Total inventories$3,293 $3,619