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Earnings Per Share
 3 Months Ended
Mar. 31, 2019
Earnings Per Share [Abstract]  
Earnings Per Share
Note 19. Earnings Per Share

The computations of basic and diluted earnings per share are as follows.

  
For the
Three Month
Period Ended
March 31,
2019
  
For the
Three Month
Period Ended
March 31,
2018
 
Net income
 
$
47.1
  
$
42.4
 
Average shares outstanding
        
Basic
  
201.6
   
201.6
 
Diluted
  
207.7
   
209.9
 
Earnings per share
        
Basic
 
$
0.23
  
$
0.21
 
Diluted
 
$
0.23
  
$
0.20
 

The DSUs described in Note 16, “Stock-Based Compensation Plans” to the consolidated financial statements in the Company’s annual report on Form 10-K for the fiscal year ended December 31, 2018 are considered outstanding shares for the purpose of computing basic earnings per share because they will become issued solely upon the passage of time.

For the three month periods ended March 31, 2019 and 2018, there were 2.5 million and 0.7 million anti-dilutive shares that were not included in the computation of diluted earnings per share.