Net Earnings Per Common Share (Tables)

3 Months Ended

Mar. 31, 2012

Computations of Basic and Diluted Earnings Per Share

The computations of basic and diluted earnings per share for the three months, ended March 31, 2012 and 2011, respectively, are as follows:

	THREE MONTHS ENDED
	March 31,		March 31,
	2012		2011
Net earnings	$	68.8	$	50.3
Basic weighted average common shares		102.0		100.9
Effect of dilutive stock options and
employee stock purchase plan shares		0.1		0.1
Effect of restricted shares issued		0.4		0.7
Diluted weighted average common shares		102.5		101.7
Basic net earnings per share	$	0.67	$	0.50
Diluted net earnings per share	$	0.67	$	0.49