RESTRUCTURING CHARGES - Reconciliation of Beginning and Ending Restructuring Reserve Balances (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			$ 12.3
Costs incurred and charged to expense	$ 2.4	$ 3.7	4.8	$ 7.2
Costs paid or otherwise settled			(4.9)
Restructuring reserve, ending balance	12.2		12.2
Employee Separation Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			11.2
Costs incurred and charged to expense	1.6		2.7
Costs paid or otherwise settled			(2.5)
Restructuring reserve, ending balance	11.4		11.4
Other Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			1.1
Costs incurred and charged to expense	0.8		2.1
Costs paid or otherwise settled			(2.4)
Restructuring reserve, ending balance	$ 0.8		$ 0.8