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Long-term Debt - Schedule of Debt (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Finance Lease, Liability	$ 32.7	$ 40.0
Less: Debt issuance costs	(66.0)	(68.9)
Total debt	1,361.7	1,367.0
Less: Current portion of long-term debt	34.8	36.5
Long-term debt	1,326.9	1,330.5
Senior Notes | 6.000% Senior Secured Notes due March 2022
Debt Instrument [Line Items]
Long-term debt	$ 500.0	$ 500.0
Stated interest rate	6.00%	6.00%
Senior Notes | 6.375% Senior Secured Notes due March 2025
Debt Instrument [Line Items]
Long-term debt	$ 500.0	$ 500.0
Stated interest rate	6.375%	6.375%
Term Loan | Senior Secured Term Loan due 2025, net of original issue discount
Debt Instrument [Line Items]
Long-term debt	$ 395.0	$ 395.9

X

- Definition

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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