Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Summary of Inventories

The following is a summary of inventories at December 31:

($ in millions)	2014		2013
Finished goods	$	76.0	$	80.0
Work in process	25.6		24.8
Raw materials	79.9		72.1
	$	181.5	$	176.9