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INVENTORY (Tables)
9 Months Ended
Jul. 31, 2019
Inventory, Net [Abstract]  
INVENTORY INVENTORY
 
 
July 31,
2019
 
October 31,
2018
 
(in millions)
Finished goods
$
409

 
$
386

Purchased parts and fabricated assemblies
251

 
252

Inventory
$
660

 
$
638