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EARNINGS PER SHARE (Tables)
12 Months Ended
Dec. 31, 2017
Earnings per share [abstract]  
Earnings per share
Reconciliation between basic and diluted earnings per share is as follows:
 
 
2017

 
2016

 
 
 
 
 
Net earnings - basic and diluted
$
362,334

 
$
346,638

 
 
 
 
 
Basic earnings per share:
 
 
 
 
Basic weighted average number of common shares outstanding
224,184

 
235,355

Basic earnings per share
$
1.62


$
1.47

 
 

 
 
Diluted earnings per share:
 
 
 
 
Basic weighted average number of common shares outstanding
224,184

 
235,355

 
Plus dilutive impact of stock options, Treasury RSUs and common
 
 
 
 
  shares held in trust
351

 
693

 
Diluted weighted average number of common shares outstanding
224,535

 
236,048

Diluted earnings per share
$
1.61


$
1.47