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Net Earnings Per Share (Tables)
 6 Months Ended
Jun. 30, 2015
Earnings Per Share [Abstract]  
Net Earnings Per Share
The calculations of net earnings per share – basic and net earnings per share – diluted were as follows:
 
3 Months Ended
 
6 months ended
 
June 30,
 
June 30,
 
2015
 
2014
 
2015
 
2014
Net earnings available to common shareholders
$
105.7

 
$
109.8

 
$
171.4

 
$
179.9

 
 
 
 
 
 
 
 
Weighted-average common shares outstanding (in millions)
 
 
 
 
 
 
 
   Weighted-average common shares outstanding - basic
78.3

 
79.9

 
78.5

 
79.9

        Effect of dilutive securities - stock options
0.6

 
0.7

 
0.6

 
0.7

        Effect of other share-based awards
0.4

 
0.8

 
0.4

 
0.8

   Weighted-average common shares outstanding - diluted
79.3

 
81.4

 
79.5

 
81.4

 
 
 
 
 
 
 
 
 Net earnings per share - basic:
$
1.35

 
$
1.37

 
$
2.18

 
$
2.25

 Net earnings per share - diluted:
$
1.33

 
$
1.35

 
$
2.16

 
$
2.21