Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2011

Earnings Per Share [Abstract]

Basic and dilutive earnings per share calculation

The following table illustrates the basic and dilutive EPS calculations for the three years ended December 31, 2011:

	Year Ended December 31,
(In millions, except per share data)	2011		2010		2009
Numerator:
Numerator for basic EPS	$	141.6	$	133.6	$	132.9
Add back earnings attributable to participating securities		-		0.1		0.2
Reported net income (Numerator for Diluted EPS)	$	141.6	$	133.7	$	133.1
Denominator:
Weighted average common shares outstanding (Basic EPS)		81.8		81.2		80.7
Conversion of share based compensation arrangements		-		0.1		0.3
Adjusted weighted average shares outstanding and
assumed conversions outstanding (Diluted EPS)		81.8		81.3		81.0
Basic earnings per share	$	1.73	$	1.65	$	1.65
Diluted earnings per share	$	1.73	$	1.64	$	1.64