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INVENTORY (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2017
Nov. 01, 2018
Inventory [Line Items]        
Finished goods $ 416 $ 386    
Purchased parts and fabricated assemblies 263 252    
Inventory 679 638   $ 628
Inventory-related excess and obsolescence charges $ 19 $ 26 $ 24