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Long-term Debt and Other Financing (Tables)
6 Months Ended
Jun. 30, 2017
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments Debt balances at June 30, 2017 and December 31, 2016, are presented below:
 
June 30,
2017
 
December 31,
2016
Credit Facility
$

 
$

7.50% Senior Secured Notes due July 2023 (effective rate of 8.3%)
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

7.625% Senior Notes due October 2021
406.2

 
406.2

8.375% Senior Notes due April 2022
279.8

 
279.8

7.00% Senior Notes due March 2027
400.0

 

Industrial Revenue Bonds due 2020 through 2028
99.3

 
99.3

Capital lease for Research and Innovation Center
26.3

 
25.2

Unamortized debt discount/premium and debt issuance costs
(51.9
)
 
(53.7
)
Total long-term debt
$
1,689.7

 
$
1,816.6