RESTRUCTURING CHARGES - Reconciliation of Beginning and Ending Restructuring Reserve Balances (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2024	Jan. 31, 2023
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 16.8
Costs incurred and charged to expense	5.7	$ 2.4
Costs paid or otherwise settled	(5.4)
Restructuring reserve, ending balance	17.1
Employee Separation Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	16.4
Costs incurred and charged to expense	2.9
Costs paid or otherwise settled	(2.5)
Restructuring reserve, ending balance	16.8
Other Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0.4
Costs incurred and charged to expense	2.8
Costs paid or otherwise settled	(2.9)
Restructuring reserve, ending balance	$ 0.3