Inventories (Tables)

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Summary of inventory

Inventories are summarized as follows:

(in millions)	March 31, 2018		December 31, 2017
Raw materials and supplies	$	188.5	$	198.3
Work in process and finished goods	439.6		421.9
Total inventories	$	628.1	$	620.2