Inventories

6 Months Ended

Jun. 30, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories are valued at the lower of cost, as determined by the first-in, first-out ("FIFO") method, or net realizable value.  Inventory values using the FIFO method of accounting approximate replacement cost.  Inventories are summarized as follows:

(in millions)	June 30, 2017		December 31, 2016
Raw materials and supplies	$	192.1	$	172.2
Work in process and finished goods	416.4		377.2
Total inventories	$	608.5	$	549.4