RESTRUCTURING CHARGES - Reconciliation of Beginning and Ending Restructuring Reserve Balances (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			$ 20.3
Costs incurred and charged to expense	$ 3.1	$ 3.7	10.3	$ 18.8
Costs paid or otherwise settled			(17.9)
Restructuring reserve, ending balance	12.7		12.7
Employee Separation Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			18.6
Costs incurred and charged to expense	1.3		5.2
Costs paid or otherwise settled			(12.2)
Restructuring reserve, ending balance	11.6		11.6
Other Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			1.7
Costs incurred and charged to expense	1.8		5.1
Costs paid or otherwise settled			(5.7)
Restructuring reserve, ending balance	$ 1.1		$ 1.1