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Accrued Liabilities (Tables) | 6 Months Ended
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Jun. 30, 2017
Accrued Liabilities Current And Noncurrent [Abstract] |
Components of Accrued Liabilities | The components of accrued liabilities were as follows (dollars in millions):
|  | June 30, |  |  | December 31, |
|  | 2017 |  |  | 2016 |
Compensation and benefits |  | $ | 99.5 |  |  | $ | 120.4 |
Medical insurance and workers’ compensation |  |  | 29.1 |  |  |  | 28.8 |
Franchise, property, sales and use taxes |  |  | 18.2 |  |  |  | 16.7 |
Customer volume discounts and rebates |  |  | 18.0 |  |  |  | 18.9 |
Environmental liabilities and asset retirement obligations |  |  | 4.5 |  |  |  | 6.4 |
Severance, retention, and relocation |  |  | 3.2 |  |  |  | 3.0 |
Other |  |  | 5.0 |  |  |  | 7.0 |
Total |  | $ | 177.5 |  |  | $ | 201.2 |

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- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
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