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SHARE-BASED COMPENSATION Allocated Share-based compensation expense (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jul. 31, 2021
Jul. 31, 2020
Jul. 31, 2021
Jul. 31, 2020
Employee Service Share-based Compensation, Allocation of Recognized Period Costs        
Share-based compensation expense $ 23 $ 19 $ 90 $ 64
Cost of Products and Services        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs        
Share-based compensation expense 6 5 21 16
Research and Development        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs        
Share-based compensation expense 3 2 9 7
Selling, General and Administrative        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs        
Share-based compensation expense $ 14 $ 12 $ 60 $ 41