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Income Taxes (Deferred Income Taxes) (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Components of Deferred Tax Assets and Liabilities [Abstract] |  |
Deferred Tax Assets, Employee Benefits Costs | $ 27.1 | $ 33.5
Deferred Tax Assets, Inventory | 31.3 | 21.3
Deferred Tax Assets, Property, Plant and Equipment | 178.0 | 190.2
Deferred Tax Assets, in Process Research and Development | 3.3 | 3.5
Deferred Tax Assets, Net Operating Loss and Credit Carryforwards | 172.0 | 188.6
Deferred Tax Assets, Accrued Expenses | 0.4 | 4.9
Deferred Tax Assets, Long-Term Debt and Financing Costs | 5.5 | 7.6
Deferred Tax Asset, Lease Liability | 0.8 | 2.1
Deferred Tax Assets, Other | 0.6 | 0.4
Deferred Tax Assets, Gross | 419.0 | 452.1
Deferred Tax Assets, Valuation Allowance | (382.4) | (414.1)
Deferred Tax Assets, Net of Valuation Allowance | 36.6 | 38.0
Deferred Tax Liabilities, Intangible Assets | 7.1 | 9.0
Deferred Tax Liability, Lease Asset | 0.6 | 1.8
Deferred Tax Liabilities, Prepaid Expenses | 0.4 | 0.4
Deferred Tax Liabilities | 8.1 | 11.2
Deferred Tax Assets, Net, Current | $ 28.5 | $ 26.8

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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 allowances of deferred tax asset attributable to deductible temporary differences from in-process research and development costs expensed in connection with a business combination. + 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 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-8 + Details
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