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INVENTORY (Tables)
6 Months Ended
Apr. 30, 2020
Inventory, Net [Abstract]  
INVENTORY INVENTORY
 
 
April 30,
2020
 
October 31,
2019
 
(in millions)
Finished goods
$
418

 
$
416

Purchased parts and fabricated assemblies
332

 
263

Inventory
$
750

 
$
679