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EARNINGS PER COMMON SHARE (Tables) | 12 Months Ended
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Sep. 30, 2023
Earnings Per Share [Abstract] |
Information to Calculate Basic and Diluted Earnings (Loss) Per Common Share | The following table presents information necessary to calculate basic and diluted income per Common Share.
| Year Ended September 30,
| 2023 |  | 2022 |  | 2021
Income (loss) from continuing operations | $ | (380.1) |  |  | $ | (437.5) |  |  | $ | 517.3 |
Net income attributable to noncontrolling interest | — |  |  | — |  |  | (0.9) |
Income (loss) attributable to controlling interest from continuing operations | (380.1) |  |  | (437.5) |  |  | 516.4 |
Loss from discontinued operations, net of tax | — |  |  | — |  |  | (3.9) |
Net income (loss) attributable to controlling interest | $ | (380.1) |  |  | $ | (437.5) |  |  | $ | 512.5 |
Basic income (loss) per common share: |  |  |  |  |
Weighted-average common shares outstanding during the period | 56.0 |  |  | 55.5 |  |  | 55.7 |
Income (loss) from continuing operations | $ | (6.79) |  |  | $ | (7.88) |  |  | $ | 9.27 |
Loss from discontinued operations | — |  |  | — |  |  | (0.07) |
Basic net income (loss) per common share | $ | (6.79) |  |  | $ | (7.88) |  |  | $ | 9.20 |
Diluted income (loss) per common share: |  |  |  |  |
Weighted-average common shares outstanding during the period | 56.0 |  |  | 55.5 |  |  | 55.7 |
Dilutive potential common shares | — |  |  | — |  |  | 1.5 |
Weighted-average number of common shares outstanding and dilutive potential common shares | 56.0 |  |  | 55.5 |  |  | 57.2 |
Income (loss) from continuing operations | $ | (6.79) |  |  | $ | (7.88) |  |  | $ | 9.03 |
Loss from discontinued operations | — |  |  | — |  |  | (0.07) |
Diluted net income (loss) per common share | $ | (6.79) |  |  | $ | (7.88) |  |  | $ | 8.96 |
Antidilutive stock options outstanding | 0.4 |  |  | 0.2 |  |  | 0.1 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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