Inventories (Tables)

9 Months Ended

Sep. 30, 2016

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories consisted of the following:

	September 30, 2016		December 31, 2015
	(in millions)
Finished goods	$	140.9	$	114.5
Raw materials and precious metals	96.0		81.2
In-process inventories	14.6		35.8
Parts and supplies	71.5		58.4
Total Inventories	$	323.0	$	289.9