Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2018

Payables and Accruals [Abstract]

Accrued Liabilities

Accrued liabilities consisted of the following:

	March 31, 2018		December 31, 2017
	(Dollars in millions)
Accrued benefits	$	13.4	$	21.3
Current portion of postretirement benefit obligation	3.1		3.1
Other taxes payable	11.8		10.5
Current portion of black lung liability	5.4		5.4
Accrued legal	5.7		5.6
Other	4.9		7.3
Total accrued liabilities	$	44.3	$	53.2