Inventories

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Inventories

NOTE 5. INVENTORIES

The classes of inventory as of December 31 are summarized as follows ($ in millions):

	2018		2017
Finished goods	$	219.5	$	201.3
Work in process	103.1		73.1
Raw materials	251.9		232.3
Total	$	574.5	$	506.7

As of December 31, 2018 and 2017, the difference between inventories valued at LIFO and the value of that same inventory if the FIFO method had been used was not significant. The liquidation of LIFO inventory did not have a significant impact on our results of operations in any period presented.