Net Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2011

Computations of Basic and Diluted Earnings Per Share

The computations of basic and diluted earnings per share for the three and nine month periods ended September 30, 2011 and 2010, respectively, are as follows:

	THREE MONTHS ENDED				NINE MONTHS ENDED
	September 30,		September 30,		September 30,		September 30,
	2011		2010		2011		2010
Net earnings	$	65.4	$	41.0	$	170.5	$	112.1
Basic weighted average common shares		101.0		99.7		100.9		99.5
Effect of dilutive stock options and
employee stock purchase plan shares		0.1		0.1		0.1		0.1
Effect of restricted shares issued		0.9		1.2		0.8		1.1
Diluted weighted average common shares		102.0		101.0		101.8		100.7
Basic net earnings per share	$	0.65	$	0.41	$	1.69	$	1.13
Diluted net earnings per share	$	0.64	$	0.41	$	1.67	$	1.11