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Earnings Per Share Computations
 3 Months Ended
Mar. 31, 2015
Earnings Per Share [Abstract]  
Earnings Per Share Computations
Earnings Per Share Computations
 
A reconciliation of basic and diluted earnings per share is below: 
 
 
Three Months Ended March 31,
(in millions, except per share amounts)
 
2015
 
2014
Numerator
 
 

 
 

Net income
 
$
54.4

 
$
49.2

 
 
 
 
 
Denominator
 
 

 
 

Weighted average common shares outstanding — basic
 
97.7

 
101.5

Dilutive shares
 
1.1

 
0.9

Weighted average common and common equivalent shares outstanding — diluted
 
98.8

 
102.4

 
 
 
 
 
Per common share income
 
 

 
 

Basic
 
$
0.55

 
$
0.48

Diluted
 
$
0.55

 
$
0.48



     Certain stock awards outstanding were not included in the computation of diluted earnings per share above because they would not have had a dilutive effect. There were no anti-dilutive stock awards outstanding for the three months ended March 31, 2015. The excluded stock awards represented an aggregate of 0.4 million shares for the three months ended March 31, 2014.