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Leases - Schedule of Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Sep. 30, 2025
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Leases [Abstract] |  |
Operating lease right-of-use assets, net | $ 107.8 | $ 104.1
Other current liabilities | 20.0 | 19.6
Operating lease liabilities | 80.4 | 77.1
Total operating lease liabilities | $ 100.4 | $ 96.7
Weighted-average remaining lease term (in years) | 5 years 7 months 6 days | 5 years 7 months 6 days
Weighted-average discount rate | 4.50% | 4.30%

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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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