RESTRUCTURING CHARGES - Reconciliation of Beginning and Ending Restructuring Reserve Balances (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			$ 12.3
Costs incurred and charged to expense	$ 8.7	$ 3.1	13.5	$ 10.3
Costs paid or otherwise settled			(9.5)
Restructuring reserve, ending balance	16.3		16.3
Employee Separation Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			11.2
Costs incurred and charged to expense	6.5		9.2
Costs paid or otherwise settled			(5.2)
Restructuring reserve, ending balance	15.2		15.2
Other Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			1.1
Costs incurred and charged to expense	2.2		4.3
Costs paid or otherwise settled			(4.3)
Restructuring reserve, ending balance	$ 1.1		$ 1.1