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Income Taxes (Deferred Income Taxes) (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Components of Deferred Tax Assets and Liabilities [Abstract] |  |
Deferred Tax Assets, Employee Benefits Costs | $ 22.1 | $ 27.1
Deferred Tax Assets, Inventory | 27.2 | 31.3
Deferred Tax Assets, Property, Plant and Equipment | 178.2 | 178.0
Deferred Tax Asset, In-Process Research and Development | 2.4 | 3.3
Deferred Tax Assets, Net Operating Loss and Credit Carryforwards | 165.2 | 172.0
Deferred Tax Assets, Accrued Expenses | 0.4 | 0.4
Deferred Tax Assets, Long-Term Debt and Financing Costs | 3.8 | 5.5
Deferred Tax Asset, Lease Liability | 0.5 | 0.8
Deferred Tax Assets, Other | 0.8 | 0.6
Deferred Tax Assets, Gross | 400.6 | 419.0
Deferred Tax Assets, Valuation Allowance | (365.7) | (382.4)
Deferred Tax Assets, Net of Valuation Allowance | 34.9 | 36.6
Deferred Tax Liabilities, Intangible Assets | 4.9 | 7.1
Deferred Tax Liability, Lease Asset | 0.3 | 0.6
Deferred Tax Liabilities, Prepaid Expenses | 0.4 | 0.4
Deferred Tax Liabilities | 5.6 | 8.1
Deferred Tax Assets, Net, Current | $ 29.3 | $ 28.5

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from in-process research and development cost acquired in business combination or from joint venture formation or both. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-6 + Details
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
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