SHARE-BASED COMPENSATION (Allocation of period costs) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Share-based Compensation Expense, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation Expense	$ 32	$ 32	$ 131	$ 118
Cost of products and services
Share-based Compensation Expense, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation Expense	8	7	28	22
Research and development
Share-based Compensation Expense, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation Expense	9	8	34	30
Selling, general and administrative
Share-based Compensation Expense, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation Expense	$ 15	$ 17	$ 69	$ 66