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INCOME TAXES (Tables) | 12 Months Ended
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Sep. 30, 2025
Income Tax Disclosure [Abstract] |
Provision (Benefit) For Income Taxes Allocated to Continuing Operations | The provision (benefit) for income taxes consisted of the following:
| Year Ended September 30,
| 2025 |  | 2024 |  | 2023
Current: |  |  |  |  |
Federal | $ | (5.4) |  |  | $ | 2.4 |  |  | $ | 3.7 |
State | 2.5 |  |  | 2.5 |  |  | 0.6 |
Foreign | 2.6 |  |  | (5.3) |  |  | 1.6 |
Total current | (0.3) |  |  | (0.4) |  |  | 5.9 |
Deferred: |  |  |  |  |
Federal | 60.3 |  |  | 11.6 |  |  | (62.1) |
State | 10.1 |  |  | (3.8) |  |  | (5.2) |
Foreign | 6.4 |  |  | 3.9 |  |  | (11.8) |
Total deferred | 76.8 |  |  | 11.7 |  |  | (79.1) |
Income tax expense (benefit) | $ | 76.5 |  |  | $ | 11.3 |  |  | $ | (73.2) |
The Domestic and Foreign Components of Income From Continuing Operations Before Income Taxes | The domestic and foreign components of income (loss) before income taxes were as follows:
| Year Ended September 30,
| 2025 |  | 2024 |  | 2023
Domestic | $ | 249.1 |  |  | $ | (10.8) |  |  | $ | (376.2) |
Foreign | (27.4) |  |  | (12.8) |  |  | (77.1) |
Income (loss) before income taxes | $ | 221.7 |  |  | $ | (23.6) |  |  | $ | (453.3) |
Reconciliation of the Federal Corporate Income Tax Rate and the Effective Tax Rate | A reconciliation of the federal corporate income tax rate and the effective tax rate on income (loss) before income taxes is summarized below:
| Year Ended September 30,
| 2025 |  | 2024 |  | 2023
Statutory income tax rate | 21.0 | % |  | 21.0 | % |  | 21.0 | %
Effect of foreign operations | 0.3 |  |  | (2.0) |  |  | 0.2 |
State taxes, net of federal benefit | 5.5 |  |  | 8.0 |  |  | 3.2 |
Effect of other permanent differences | 2.2 |  |  | (32.8) |  |  | (0.8) |
Research and Experimentation and other federal tax credits | (0.3) |  |  | 2.9 |  |  | 0.2 |
Effect of tax contingencies | (0.5) |  |  | 3.7 |  |  | 0.1 |
Change in valuation allowances | 5.4 |  |  | (57.4) |  |  | (8.7) |
Other | 0.9 |  |  | 8.7 |  |  | 1.0 |
Effective income tax rate | 34.5 | % |  | (47.9) | % |  | 16.2 | %
Components of Deferred Income Tax Assets and Liabilities | Deferred income taxes arise from temporary differences between financial reporting and tax reporting bases of assets and liabilities, and operating loss and tax credit carryforwards for tax purposes. The components of the deferred income tax assets and liabilities were as follows:
| September 30,
| 2025 |  | 2024
DEFERRED TAX ASSETS |  |  |
Lease liabilities | $ | 69.4 |  |  | $ | 67.6 |
Outside basis difference in equity investments | 62.7 |  |  | 23.1 |
Interest limitation carryforward | 59.6 |  |  | 55.9 |
Accrued liabilities | 43.8 |  |  | 43.2 |
Net operating loss carryovers | 39.6 |  |  | 56.4 |
Foreign tax credit carryovers | 13.7 |  |  | 15.2 |
Intangible assets | 13.6 |  |  | 62.2 |
Inventories | 13.4 |  |  | 16.1 |
Convertible debt investments | 4.7 |  |  | 43.6 |
Other | 22.2 |  |  | 22.4 |
Gross deferred tax assets | 342.7 |  |  | 405.7 |
Valuation allowance | (96.8) |  |  | (96.5) |
Total deferred tax assets | 245.9 |  |  | 309.2 |
DEFERRED TAX LIABILITIES |  |  |
Lease right-of-use assets | (65.0) |  |  | (62.0) |
Property, plant and equipment | (62.3) |  |  | (58.5) |
Other | (5.1) |  |  | (4.4) |
Total deferred tax liabilities | (132.4) |  |  | (124.9) |
Net deferred tax asset | $ | 113.5 |  |  | $ | 184.3 |
Schedule of Unrecognized Tax Benefits Roll Forward | A reconciliation of the unrecognized tax benefits is as follows:
| Year Ended September 30,
| 2025 |  | 2024 |  | 2023
Balance at beginning of year | $ | 25.7 |  |  | $ | 34.6 |  |  | $ | 35.8 |
Additions for tax positions of the current year | 0.2 |  |  | 0.2 |  |  | 0.2 |
Additions for tax positions of prior years | — |  |  | 0.1 |  |  | 3.8 |
Reductions for tax positions of prior years | — |  |  | (3.7) |  |  | (0.2) |
Settlements with tax authorities | — |  |  | (0.7) |  |  | (0.1) |
Expiration of statutes of limitation | (3.1) |  |  | (4.8) |  |  | (4.9) |
Balance at end of year | $ | 22.8 |  |  | $ | 25.7 |  |  | $ | 34.6 |

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