BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2024	Apr. 30, 2023
Segment Reporting Information [Line Items]
Revenues	$ 2,018.2	$ 1,984.0	$ 4,087.8	$ 3,975.3
Management Reimbursement Revenue
Segment Reporting Information [Line Items]
Revenues	$ 76.9	$ 73.5	$ 157.0	$ 146.0