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INVENTORY (Tables)
9 Months Ended
Jul. 31, 2018
Inventory, Net [Abstract]  
INVENTORY
6. INVENTORY
 
 
July 31,
2018
 
October 31,
2017
 
(in millions)
Finished goods
$
381

 
$
363

Purchased parts and fabricated assemblies
242

 
212

Inventory
$
623

 
$
575