Long-term Debt and Other Financing (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Capital Lease Obligations	$ 9.6	$ 0.0
Unamortized debt discount/premium and debt issuance costs	(48.7)	(51.4)
Total long-term debt	2,336.4	2,354.1
Senior Secured Notes Due December 2018 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	380.0	380.0
Exchangeable Senior Notes Due November 2019 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 150.0	$ 150.0
Debt Instrument, Interest Rate, Effective Percentage	10.80%	10.80%
Senior Notes Due May 2020 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 529.8	$ 529.8
Senior Notes Due October 2021 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	406.2	406.2
Senior Notes Due April 2022 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	290.2	290.2
Industrial Revenue Bonds [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	99.3	99.3
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit Facility	520.0	$ 550.0
Research And Innovation Center Middletown OH [Member]
Debt Instrument [Line Items]
Estimated Cost of Construction Project	36.0
Research And Innovation Center Middletown OH [Member] \| Property, Plant and Equipment [Member]
Debt Instrument [Line Items]
Capital Leased Assets, Gross	9.6
Research And Innovation Center Middletown OH [Member] \| Long-term Debt [Member]
Debt Instrument [Line Items]
Capital Lease Obligations	$ 9.6

Costs for debt instrument unamortized discount/premium and debt issuance costs, net

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The estimated costs related to construction projects

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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