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RESTRUCTURING CHARGES - Reconciliation of Total Amounts Expected to be Incurred from Open Restructuring Plans Anticipated to be Realized (Details) - USD ($)
$ in Millions
 11 Months Ended 12 Months Ended
Sep. 30, 2025
Oct. 31, 2024
Oct. 31, 2023
Restructuring Cost and Reserve [Line Items]      
Total Amounts Expected to be Incurred $ 61.9    
Amounts Incurred During the Eleven Months ended September 30, 2025 40.3 $ 5.4 $ 18.7
Amounts Remaining to be Incurred 21.6    
Employee Separation Costs      
Restructuring Cost and Reserve [Line Items]      
Amounts Incurred During the Eleven Months ended September 30, 2025 28.2 7.6 11.8
Other restructuring costs      
Restructuring Cost and Reserve [Line Items]      
Amounts Incurred During the Eleven Months ended September 30, 2025 12.1 $ 6.8 $ 6.9
Customized Polymer Solutions      
Restructuring Cost and Reserve [Line Items]      
Total Amounts Expected to be Incurred 5.4    
Amounts Incurred During the Eleven Months ended September 30, 2025 4.6    
Amounts Remaining to be Incurred 0.8    
Customized Polymer Solutions | Employee Separation Costs      
Restructuring Cost and Reserve [Line Items]      
Total Amounts Expected to be Incurred 5.0    
Amounts Incurred During the Eleven Months ended September 30, 2025 4.2    
Amounts Remaining to be Incurred 0.8    
Customized Polymer Solutions | Other restructuring costs      
Restructuring Cost and Reserve [Line Items]      
Total Amounts Expected to be Incurred 0.4    
Amounts Incurred During the Eleven Months ended September 30, 2025 0.4    
Amounts Remaining to be Incurred 0.0    
Durable Metal Solutions      
Restructuring Cost and Reserve [Line Items]      
Total Amounts Expected to be Incurred 16.9    
Amounts Incurred During the Eleven Months ended September 30, 2025 7.6    
Amounts Remaining to be Incurred 9.3    
Durable Metal Solutions | Employee Separation Costs      
Restructuring Cost and Reserve [Line Items]      
Total Amounts Expected to be Incurred 8.6    
Amounts Incurred During the Eleven Months ended September 30, 2025 6.9    
Amounts Remaining to be Incurred 1.7    
Durable Metal Solutions | Other restructuring costs      
Restructuring Cost and Reserve [Line Items]      
Total Amounts Expected to be Incurred 8.3    
Amounts Incurred During the Eleven Months ended September 30, 2025 0.7    
Amounts Remaining to be Incurred 7.6    
Sustainable Fiber Solutions      
Restructuring Cost and Reserve [Line Items]      
Total Amounts Expected to be Incurred 36.0    
Amounts Incurred During the Eleven Months ended September 30, 2025 25.7    
Amounts Remaining to be Incurred 10.3    
Sustainable Fiber Solutions | Employee Separation Costs      
Restructuring Cost and Reserve [Line Items]      
Total Amounts Expected to be Incurred 16.2    
Amounts Incurred During the Eleven Months ended September 30, 2025 15.0    
Amounts Remaining to be Incurred 1.2    
Sustainable Fiber Solutions | Other restructuring costs      
Restructuring Cost and Reserve [Line Items]      
Total Amounts Expected to be Incurred 19.8    
Amounts Incurred During the Eleven Months ended September 30, 2025 10.7    
Amounts Remaining to be Incurred 9.1    
Integrated Solutions      
Restructuring Cost and Reserve [Line Items]      
Total Amounts Expected to be Incurred 3.6    
Amounts Incurred During the Eleven Months ended September 30, 2025 2.4    
Amounts Remaining to be Incurred 1.2    
Integrated Solutions | Employee Separation Costs      
Restructuring Cost and Reserve [Line Items]      
Total Amounts Expected to be Incurred 2.3    
Amounts Incurred During the Eleven Months ended September 30, 2025 2.1    
Amounts Remaining to be Incurred 0.2    
Integrated Solutions | Other restructuring costs      
Restructuring Cost and Reserve [Line Items]      
Total Amounts Expected to be Incurred 1.3    
Amounts Incurred During the Eleven Months ended September 30, 2025 0.3    
Amounts Remaining to be Incurred $ 1.0