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INVENTORY (Notes)
6 Months Ended
Apr. 30, 2017
Inventory, Net [Abstract]  
INVENTORY
6. INVENTORY
 
 
April 30,
2017
 
October 31,
2016
 
(in millions)
Finished goods
$
342

 
$
339

Purchased parts and fabricated assemblies
206

 
194

Inventory
$
548

 
$
533