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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 |  |

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