Inventories

9 Months Ended

Sep. 30, 2018

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)	September 30, 2018		December 31, 2017
Raw materials and supplies	$	191.6	$	198.3
Work in process and finished goods	436.1		421.9
Total inventories	$	627.7	$	620.2