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Investments - Schedule of Investments (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Sep. 30, 2024
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Investments, Debt and Equity Securities [Abstract] |  |
Equity securities (other) | $ 105.0 | $ 106.0
Other | 77.0 | 63.0
Long-term investments | $ 182.0 | $ 169.0

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- Definition Other Equity Securities + References No definition available. + Details
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- Definition The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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