BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Segment Reporting Information [Line Items]
Revenues	$ 1,984.0	$ 1,897.8	$ 3,975.3	$ 3,834.1
Management Reimbursement Revenue
Segment Reporting Information [Line Items]
Revenues	$ 73.5	$ 66.4	$ 146.0	$ 131.3