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INVENTORY (Tables)
12 Months Ended
Oct. 31, 2020
Inventory Disclosure [Abstract]  
Inventory
Inventory as of October 31, 2020 and 2019 consisted of the following:
 October 31,
 20202019
 (in millions)
Finished goods$417 $416 
Purchased parts and fabricated assemblies303 263 
Inventory$720 $679