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INCOME TAXES - Additional Information (Details) - USD ($) $ in Millions | 2 Months Ended | 3 Months Ended | 10 Months Ended | 11 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Sep. 30, 2025 | Jul. 31, 2025 | Apr. 30, 2025 | Jan. 31, 2025 | Oct. 31, 2024 | Jul. 31, 2024 | Apr. 30, 2024 | Jan. 31, 2024 | Sep. 30, 2024 | Sep. 30, 2025 | Oct. 31, 2024 | Oct. 31, 2023
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) before income tax expense and equity earnings of unconsolidated affiliates, net | $ (9.6) | $ 55.8 | $ 54.4 | $ 3.1 | $ 60.1 | $ 117.1 | $ 74.1 | $ 30.4 | $ 262.5 | $ 103.7 | $ 281.7 | $ 396.4
Net operating loss and other carryforwards | 130.0 |  |  |  | 126.5 |  |  |  |  | 130.0 | 126.5 |
Operating loss carryforwards, U.S. Federal | 22.6 |  |  |  | 19.5 |  |  |  |  | 22.6 | 19.5 |
Operating loss carryforwards, State | 3.3 |  |  |  | 10.2 |  |  |  |  | 3.3 | 10.2 |
Operating loss carryforwards, Non-U.S. | 104.1 |  |  |  | 96.8 |  |  |  |  | 104.1 | 96.8 |
Net change in valuation allowance | 113.3 |  |  |  | 87.4 |  |  |  |  | 113.3 | 87.4 |
Increase (decrease) in valuation allowances |  |  |  |  |  |  |  |  |  | 25.9 |  |
Unrecognized tax benefits | 35.1 |  |  |  | 25.5 |  |  |  |  | 35.1 | 25.5 | 23.4
Accrued interest and penalties related to unrecognized tax benefits | 7.7 |  |  |  | 3.8 |  |  |  |  | 7.7 | 3.8 |
Net decrease in unrecognized tax benefits for the next 12 months | 13.6 |  |  |  |  |  |  |  |  | 13.6 |  |
Domestic Tax Jurisdiction |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) before income tax expense and equity earnings of unconsolidated affiliates, net |  |  |  |  |  |  |  |  |  | (97.2) | 47.2 | 142.4
Net change in valuation allowance | 25.4 |  |  |  | 22.2 |  |  |  |  | 25.4 | 22.2 |
Non-U.S. |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) before income tax expense and equity earnings of unconsolidated affiliates, net |  |  |  |  |  |  |  |  |  | 200.9 | 234.5 | $ 254.0
Net change in valuation allowance | $ 87.9 |  |  |  | $ 65.2 |  |  |  |  | $ 87.9 | $ 65.2 |

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