Inventories (Tables)

3 Months Ended

Mar. 31, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories as of March 31, 2017 and December 31, 2016 consisted of the following:

	March 31, 2017		December 31, 2016
	(Dollars in millions)
Materials and supplies	$	101.6	$	104.5
Raw coal	40.9		29.6
Saleable coal	108.3		69.6
Total	$	250.8	$	203.7