Inventories (Tables)

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories consisted of the following:

	September 30, 2017		December 31, 2016
	(in millions)
Finished goods	$	4.4	$	6.8
Raw materials, spare parts and supplies	1.6		1.8
Total	$	6.0	$	8.6