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INVENTORIES (Tables)
6 Months Ended
Jun. 27, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventories, Net Inventories consisted of the following (in millions):
June 27,
2021
December 31,
2020
Materials, spares and supplies$621 $612 
Work-in-process
2,290 2,693 
Finished goods208 240 
Total inventories$3,119 $3,545