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Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2025 | Mar. 31, 2024 | Sep. 30, 2024
Income Tax Disclosure [Abstract] |  |  |  |  |
Effective income tax rate | 17.10% | 14.50% | 16.80% | 16.10% |
Income tax liabilities | $ 97.0 |  | $ 97.0 |  |
Gross unrecognized tax benefits | 27.0 |  | 27.0 |  | $ 25.0
Accrued interest and penalties related to unrecognized tax benefits | 2.0 |  | 2.0 |  | $ 2.0
Reasonably possible amount of reduction in gross unrecognized tax benefits for the next twelve months | 2.0 |  | 2.0 |  |
Reasonably possible amount of net reduction to income tax provision if unrecognized tax benefits were recognized | $ 3.0 |  | $ 3.0 |  |

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- Definition Net reduction to income tax provision, including the recognition of interest and penalties and offsetting tax assets, if unrecognized tax benefits were recognized. + References No definition available. + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 231 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-231 + Details
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- Definition The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-15 + Details
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- Definition Amount of tax liability from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/740/tableOfContent + Details
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