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RESTRUCTURING CHARGES - Reconciliation of Beginning and Ending Restructuring Reserve Balances (Details)
$ in Millions
 6 Months Ended
Apr. 30, 2025
USD ($)
Restructuring Reserve [Roll Forward]  
Restructuring reserve, beginning balance $ 4.9
Costs incurred and charged to expense 13.9
Costs paid or otherwise settled (7.1)
Restructuring reserve, ending balance 11.7
Employee Separation Costs  
Restructuring Reserve [Roll Forward]  
Restructuring reserve, beginning balance 4.8
Costs incurred and charged to expense 10.6
Costs paid or otherwise settled (3.9)
Restructuring reserve, ending balance 11.5
Other Costs  
Restructuring Reserve [Roll Forward]  
Restructuring reserve, beginning balance 0.1
Costs incurred and charged to expense 3.3
Costs paid or otherwise settled (3.2)
Restructuring reserve, ending balance $ 0.2