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Accrued Liabilities | 12 Months Ended
--- | ---
Dec. 31, 2022
Balance Sheet Related Disclosures [Abstract] |
Accrued Liabilities | 10. Accrued Liabilities Accrued liabilities consist of following:
| December 31,
| 2022 |  | 2021
| (Dollars in millions)
Accrued benefits | $ | 29.7 |  |  | $ | 21.7 |
Current portion of postretirement benefit obligation | 2.4 |  |  | 2.6 |
Other taxes payable | 9.8 |  |  | 9.2 |
Current portion of black lung liability | 5.9 |  |  | 5.4 |
Accrued legal | 4.9 |  |  | 4.5 |
Other | 8.7 |  |  | 9.6 |
Total accrued liabilities | $ | 61.4 |  |  | $ | 53.0 |

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI https://asc.fasb.org/topic&trid=2122208 + Details
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