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Earnings per share
9 Months Ended
Jun. 30, 2011
Earnings Per Share [Abstract]  
Earnings Per Share [Text Block]
Earnings per share
Basic earnings per share is based on the average number of common shares outstanding during the period. Diluted earnings per share is based on the average number of shares used for the basic earnings per share calculation, adjusted for the dilutive effect of stock options and restricted stock equivalents.


The following table sets forth the computation of basic and diluted earnings per share for the quarters and nine months ended June 30, 2011 and 2010, respectively.


(in millions, except per share data)
Quarter Ended
Nine Months Ended
 
June 30,
June 30,
 
2011
 
2010
2011
 
2010
Numerator:
 
 
 
 
 
 
Net earnings for basic and dilutive earnings per share
$
65.9


 
$
104.0


$
215.4


 
$
318.2


Denominator:
 
 
 
 
 
 
Weighted-average shares for basic earnings per share
69.7


 
70.1


70.1


 
69.9


Effect of dilutive securities:
 
 
 
 
 
 
Stock options
0.2


 
0.3


0.2


 
0.3


Restricted stock equivalents
0.7


 
0.3


0.6


 
0.3


Total dilutive securities
0.9


 
0.6


0.8


 
0.6


Weighted-average shares for diluted earnings per share
70.6


 
70.7


70.9


 
70.5


Basic earnings per share
$
0.95


 
$
1.48


$
3.07


 
$
4.55


Diluted earnings per share
$
0.94


 
$
1.47


$
3.04


 
$
4.51






At June 30, 2011 and 2010, approximately 0.7 and 1.3 of the Company’s outstanding RSEs and stock options were not included in the diluted net earnings per share calculation, for each period, because to do so would have been anti-dilutive. In the event the potentially dilutive securities are anti-dilutive on net earnings per share (i.e., have the effect of increasing EPS because the exercise price is higher than the current share price), the impact of the potentially dilutive securities is not included in the computation.