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SHARE-BASED COMPENSATION Allocated Share-based compensation expense (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2018
Share-based compensation disclosures      
Share-based compensation expense $ 84 $ 72 $ 71
Cost of Product and Services      
Share-based compensation disclosures      
Share-based compensation expense 21 18 16
Research and Development      
Share-based compensation disclosures      
Share-based compensation expense 9 7 7
Selling, General and Administrative      
Share-based compensation disclosures      
Share-based compensation expense 54 47 $ 48
Inventories      
Share-based Payment Arrangement, Expensed and Capitalized, Amount      
Share-based compensation expense $ 0 $ 0