Income Taxes (Loss) Earnings before Income Taxes and Equity Method Loss (Details) - USD ($) $ in Millions |
12 Months Ended | ||
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Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2022 |
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| Earnings before Income Taxes and Equity Method Loss [Abstract] | |||
| Domestic | $ 436.4 | $ 397.2 | $ 799.9 |
| Foreign | 35.7 | 15.7 | 95.4 |
| Earnings before Income Taxes and Equity Method Loss | 472.1 | 412.9 | 895.3 |
| Income tax expense | $ 105.1 | $ 99.7 | $ 85.7 |
| Effective Income Tax Rate Reconciliation, Percent | 22.30% | 24.10% | 9.60% |
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- Definition Earnings before Income Taxes and Equity Method Loss [Abstract] No definition available.
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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