INVENTORY
 3 Months Ended
Jan. 31, 2015
Inventory, Net [Abstract]  
INVENTORY
7. INVENTORY
 
 
January 31,
2015
 
October 31,
2014
 
(in millions)
Finished goods
$
356

 
$
366

Purchased parts and fabricated assemblies
204

 
208

Inventory
$
560

 
$
574