Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Summary of Significant Accounting Policies [Abstract]

Inventories

Inventories: Inventories are valued at the lower of standard cost (which approximates actual cost on a first-in-first-out basis) or market. The following is a summary of inventories at December 31:

($ in millions)	2011		2010
Finished goods	$	67.1	$	65.1
Work in process		19.6		21.4
Raw materials		65.1		60.5
	$	151.8	$	147.0