Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories consisted of the following:

	December 31,
(in Millions)	2017			2016
Finished goods	$	353.7		$	220.1
Work in process	542.4			219.3
Raw materials, supplies and other	224.1			166.7
FIFO inventory	$	1,120.2		$	606.1
Less: Excess of FIFO cost over LIFO cost	(127.7		)	(127.2		)
Net inventories	$	992.5		$	478.9