Earnings Per Share

12 Months Ended

Dec. 31, 2012

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share:

Basic earnings per share are computed by dividing net income by the weighted-average number of common shares outstanding during the period. Diluted earnings per share are computed by dividing net income by the sum of the weighted-average number of shares and the number of equivalent shares assumed outstanding, if dilutive, under our stock-based compensation plans.

The computations of basic and diluted earnings per share for Income from Continuing Operations were as follows (in millions, except per share data):

	For the Years Ended December 31,
	2012		2011		2010
Net income	$	90.0	$	88.3	$	116.2
Add: Loss from discontinued operations	45.0		23.2		9.7
Income from continuing operations	$	135.0	$	111.5	$	125.9
Weighted-average shares outstanding – basic	50.7		52.5		54.6
Effect of diluted securities attributable to stock-based payments	0.7		0.9		1.2
Weighted-average shares outstanding – diluted	51.4		53.4		55.8
Earnings per share from continuing operations:
Basic	$	2.66	$	2.12	$	2.31
Diluted	$	2.63	$	2.09	$	2.26

Certain stock appreciation rights were outstanding, but not included in the diluted earnings per share calculation because the assumed exercise of such rights would have been anti-dilutive. The details are as follows (in millions, except per share data):

	For the Years Ended December 31,
	2012	2011	2010
Weighted-average number of shares	0.1	1.5	0.3
Price ranges per share	$51.11 - $51.40	$34.06 - $46.78	$46.78