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Accrued Liabilities
9 Months Ended
Sep. 30, 2016
Accrued Liabilities [Abstract]  
Accrued Liabilities
Accrued Liabilities

The components of accrued liabilities were as follows (dollars in millions):
 
September 30,
2016
 
December 31,
2015
Compensation and benefits
$
114.7

 
$
106.4

Medical insurance and workers’ compensation
32.0

 
31.1

Franchise, property, and sales and use taxes
19.4

 
16.0

Customer volume discounts and rebates
20.1

 
15.3

Environmental liabilities and asset retirement obligations
7.1

 
7.9

Severance, retention, and relocation
3.3

 
7.3

Other
8.3

 
9.5

Total
$
204.9

 
$
193.5