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INVENTORY (Tables)
3 Months Ended
Jan. 31, 2021
Inventory, Net [Abstract]  
INVENTORY INVENTORY
 
Inventory as of January 31, 2021 and October 31, 2020 consisted of the following:

 January 31,
2021
October 31,
2020
 (in millions)
Finished goods$416 $417 
Purchased parts and fabricated assemblies339 303 
Inventory$755 $720