XML 28 R29.htm IDEA: XBRL DOCUMENT v3.3.0.814
Net Income Per Share(Tables)
 9 Months Ended
Sep. 30, 2015
Earnings Per Share [Abstract]  
Reconciliation of the Common and Potential Common Shares Outstanding Used in Earnings Per Share Calculation
A reconciliation of the average number of common and potential common shares outstanding used in the calculations of basic and diluted net income per share follows ($ in millions, shares in thousands):
 
Three Months Ended
 
Nine Months Ended
 
September 30,
2015
 
September 30,
2014
 
September 30,
2015
 
September 30,
2014
Numerator (basic and diluted):
 
 
 

 
 
 
 
Net income
$
25.8

 
$
23.0

 
$
68.0

 
$
71.2

Less: Dividends paid to participating securities
—

 
(0.1
)
 
(0.2
)
 
(0.3
)
Less: Undistributed earnings available to participating securities
—

 
(0.1
)
 
(0.2
)
 
(0.4
)
Undistributed and distributed earnings available to common stockholders
$
25.8

 
$
22.8

 
$
67.6

 
$
70.5

 
 
 
 
 
 
 
 
Denominator:
 

 
 

 
 
 
 
Average number of common shares outstanding
30,275.4

 
30,098.3

 
30,243.0

 
30,284.9

Effect of dilutive stock-based compensation
133.2

 
127.2

 
123.6

 
117.8

Average number of common and potential common shares outstanding
30,408.6

 
30,225.5

 
30,366.6

 
30,402.7