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Earnings Per Share
3 Months Ended
Mar. 31, 2014
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings Per Share
The calculation of basic earnings per share is based on the weighted average number of shares of the Company's common stock outstanding during the period. Diluted earnings per share is similar to basic earnings per share, but adjusts for the dilutive effect of the potential issuance of incremental shares of the Company's common stock. The following is a reconciliation of the numerator and denominator used in the calculation of basic and diluted earnings per share available to common stockholders.
 
For the Three Months Ended March 31,
 
2013
 
2014
Numerator
 
 
 
Net income (controlling interest)
$
62.4

 
$
77.2

Denominator
 
 
 
Average shares outstanding—basic
52.7

 
53.7

Effect of dilutive instruments:
 
 
 
Stock options and restricted stock
1.3

 
1.3

Forward equity
0.2

 
0.2

Average shares outstanding—diluted
54.2

 
55.2


The diluted earnings per share calculations in the table above exclude the anti-dilutive effect of the following shares:
 
For the Three Months Ended March 31,
 
2013
 
2014
Stock options and restricted stock
0.0

 
0.3

Senior convertible securities
3.6

 

Junior convertible trust preferred securities
4.2

 
3.7