INVENTORY (Tables)
 12 Months Ended
Oct. 31, 2017
Inventory Disclosure [Abstract]  
Inventory
 
October 31,
 
2017
 
2016
 
(in millions)
Finished goods
$
363

 
$
339

Purchased parts and fabricated assemblies
212

 
194

Inventory
$
575

 
$
533