Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Summary of Inventories

The following is a summary of inventories at December 31:

($ in millions)	2012		2011
Finished goods	$	70.9	$	67.1
Work in process	23.6		19.6
Raw materials	67.7		65.1
	$	162.2	$	151.8