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Goodwill - Additional Information (Detail) - USD ($) $ in Millions | Mar. 31, 2025 | Sep. 30, 2024
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Goodwill And Other Assets Disclosure [Abstract] |  |
Goodwill and other intangible assets, net | $ 628.7 | $ 629.8

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- Definition Goodwill and other assets disclosure. + References No definition available. + Details
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- Definition Amount, after impairment and amortization, of goodwill, indefinite-lived, and finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 10 -Name Accounting Standards Codification -Section S45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480265/350-10-S45-1 + Details
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