Long-term Debt and Other Financing (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2016

Dec. 31, 2015

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

Debt balances at March 31, 2016, and December 31, 2015, are presented below:

	March 31, 2016			December 31, 2015
Credit Facility	$	520.0		$	550.0
8.75% Senior Secured Notes due December 2018	380.0			380.0
5.00% Exchangeable Senior Notes due November 2019 (effective rate of 10.8%)	150.0			150.0
7.625% Senior Notes due May 2020	529.8			529.8
7.625% Senior Notes due October 2021	406.2			406.2
8.375% Senior Notes due April 2022	290.2			290.2
Industrial Revenue Bonds due 2020 through 2028	99.3			99.3
Capital lease for Research and Innovation Center	9.6			—
Unamortized debt discount/premium and debt issuance costs	(48.7		)	(51.4		)
Total long-term debt	$	2,336.4		$	2,354.1

Debt balances, including current portions, at December 31, 2015 and 2014, are presented below:

	2015			2014
Credit Facility	$	550.0		$	605.0
8.75% Senior Secured Notes due December 2018	380.0			380.0
5.00% Exchangeable Senior Notes due November 2019 (effective rate of 10.8%)	150.0			150.0
7.625% Senior Notes due May 2020	529.8			529.8
7.625% Senior Notes due October 2021	406.2			430.0
8.375% Senior Notes due April 2022	290.2			290.2
Industrial Revenue Bonds due 2020 through 2028	99.3			99.3
Unamortized debt discount/premium and debt issuance costs	(51.4		)	(62.3		)
Total long-term debt	$	2,354.1		$	2,422.0

Schedule of Maturities of Long-term Debt

Maturities of long-term debt, including the amount outstanding on the Credit Facility, for the next five years, at December 31, 2015, are presented below:

Year		Debt Maturities
2016		$	—
2017		—
2018		380.0
2019	(including $550.0 of Credit Facility borrowings)	700.0
2020		537.1