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Summary of Significant Accounting Policies (Schedule of Reserves for Excess and Obsolete Inventory) (Details) - USD ($) $ in Millions | 12 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Accounting Policies [Abstract] |  |  |
Balance at beginning of year | $ 16.8 | $ 16.5 | $ 14.8
Provision charged to expense | 13.3 | 3.8 | 1.8
Inventory disposed | (8.8) | (2.5) | (1.4)
Other | 0.1 | (1.0) | 1.3
Balance at end of year | $ 21.4 | $ 16.8 | $ 16.5

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- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 330 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483080/330-10-50-2 + Details
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