Accrued Liabilities (Tables)

9 Months Ended

Sep. 30, 2024

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities

Accrued liabilities consisted of the following:

	September 30, 2024		December 31, 2023
	(Dollars in millions)
Accrued benefits	$	22.2	$	26.8
Current portion of postretirement benefit obligation	2.3		2.3
Other taxes payable	12.4		10.4
Current portion of black lung liability	1.2		5.0
Lease liabilities	2.7		2.5
Other	6.3		4.7
Total accrued liabilities	$	47.1	$	51.7