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Earnings per Share (Tables)
 12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Computation of Basic and Diluted Net EPS
The following table sets forth the computation of basic and diluted net earnings per share (in millions, except per share data):
                         
 
Year Ended December 31,
 
 
2019
 
  
2018
 
  
2017
 
Net earnings attributable to controlling interests
  $
  
668.8
     $
  
633.5
     $
  
481.3
  
                         
Weighted average number of common shares outstanding
   
186.0
     
182.7
     
180.1
 
Dilutive effect of stock options using the treasury stock method
   
4.1
     
3.5
     
2.0
 
                         
Weighted average number of common and common equivalent shares outstanding
   
190.1
     
186.2
     
182.1
 
                         
Basic net earnings per share
  $
3.60
    $
3.47
    $
2.67
 
                         
Diluted net earnings per share
  $
3.52
    $
3.40
    $
2.64