Goodwill and Other Intangible Assets - Schedule of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Sep. 30, 2025 |
|---|---|---|
| Finite-Lived Intangible Assets [Line Items] | ||
| Amortized intangible assets - net | $ 6.7 | $ 7.0 |
| Goodwill | 15.4 | 15.4 |
| Total Goodwill and Other Intangible Assets | 22.1 | 22.4 |
| Patents | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Amortized intangible assets - gross | 10.8 | 10.8 |
| Amortized intangible assets - accumulated amortization | (5.8) | (5.7) |
| Amortized intangible assets - net | 5.0 | 5.1 |
| Customer Relationship and Other | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Amortized intangible assets - gross | 5.2 | 5.3 |
| Amortized intangible assets - accumulated amortization | (3.5) | (3.4) |
| Amortized intangible assets - net | $ 1.7 | $ 1.9 |
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, after impairment and amortization, of goodwill, indefinite-lived, and finite-lived intangible assets. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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