Inventories (Tables)

3 Months Ended

Mar. 31, 2015

Inventory Disclosure [Abstract]

Inventories

Inventories are valued at the lower of cost (on a first-in, first-out basis) or market. Inventory balances were as follows:

($ in millions)	March 31, 2015		December 31, 2014
Finished goods	$	80.1	$	76.0
Work in process	27.6		25.6
Raw materials	75.7		79.9
	$	183.4	$	181.5