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Income Taxes (Deferred Income Taxes) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Components of Deferred Tax Assets and Liabilities [Abstract] |  |
Deferred Tax Assets, Employee Benefits Costs | $ 33.5 | $ 36.2
Deferred Tax Assets, Inventory | 21.3 | 18.6
Deferred Tax Assets, Property, Plant and Equipment | 190.2 | 191.5
Deferred Tax Assets, in Process Research and Development | 3.5 | 0.0
Deferred Tax Assets, Net Operating Loss and Credit Carryforwards | 188.6 | 206.2
Deferred Tax Assets, Accrued Expenses | 4.9 | 0.4
Deferred Tax Assets, Long-Term Debt and Financing Costs | 7.6 | 10.8
Deferred Tax Asset, Lease Liability | 2.1 | 0.9
Deferred Tax Assets, Other | 0.4 | 0.2
Deferred Tax Assets, Gross | 452.1 | 464.8
Deferred Tax Assets, Valuation Allowance | (414.1) | (414.7)
Deferred Tax Assets, Net of Valuation Allowance | 38.0 | 50.1
Deferred Tax Liabilities, Intangible Assets | 9.0 | 7.9
Deferred Tax Liability, Lease Asset | 1.8 | 0.4
Deferred Tax Liabilities, Prepaid Expenses | 0.4 | 0.4
Deferred Tax Liabilities | 11.2 | 8.7
Deferred Tax Assets, Net, Current | $ 26.8 | $ 41.4

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