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Accrued Liabilities
3 Months Ended
Mar. 31, 2017
Accrued Liabilities [Abstract]  
Accrued Liabilities
Accrued Liabilities

The components of accrued liabilities were as follows (dollars in millions):
 
March 31,
2017
 
December 31,
2016
Compensation and benefits
$
73.6

 
$
120.4

Medical insurance and workers’ compensation
28.8

 
28.8

Franchise, property, and sales and use taxes
15.5

 
16.7

Customer volume discounts and rebates
14.7

 
18.9

Environmental liabilities and asset retirement obligations
5.9

 
6.4

Severance, retention, and relocation
3.3

 
3.0

Other
5.3

 
7.0

Total
$
147.1

 
$
201.2