Inventories (Tables)

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories consisted of the following:

(in Millions)	March 31, 2018			December 31, 2017
Finished goods	$	457.8		$	353.7
Work in process	456.1			542.4
Raw materials, supplies and other	250.0			224.1
First-in, first-out inventory	$	1,163.9		$	1,120.2
Less: Excess of first-in, first-out cost over last-in, first-out cost	(128.7		)	(127.7		)
Net inventories	$	1,035.2		$	992.5