ACQUISITIONS OF ESI (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended			6 Months Ended
	Nov. 03, 2023	Apr. 30, 2025	Apr. 30, 2024	Jan. 31, 2024	Apr. 30, 2025	Apr. 30, 2024
Business Combination [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired					$ 3	$ 556
Acquisition of non-controlling interests				$ 458	0	458
Share-based Compensation Expense		$ 37	$ 36		$ 99	$ 86
ESI Group SA
Business Combination [Line Items]
Business Combination, Effective Date of Acquisition						Nov. 03, 2023
Business Combination, Voting Equity Interest Acquired, Percentage	50.60%
Payments to Acquire Businesses, Net of Cash Acquired	$ 477
Business Combination, Recognized Liability Assumed, Liability	$ 7
Business Combination, Price Per Share	$ 155