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INVENTORY (Notes)
9 Months Ended
Jul. 31, 2017
Inventory, Net [Abstract]  
INVENTORY
6. INVENTORY
 
 
July 31,
2017
 
October 31,
2016
 
(in millions)
Finished goods
$
358

 
$
339

Purchased parts and fabricated assemblies
208

 
194

Inventory
$
566

 
$
533