XML 49 R32.htm IDEA: XBRL DOCUMENT v3.8.0.1
Earnings Per Share (EPS) (Tables)
 12 Months Ended
Dec. 31, 2017
Earnings Per Share (EPS) [Abstract]  
Computation of basic and diluted earnings per share
  
Year Ended December 31,
 
  
2017
  
2016
  
2015
 
  
(in millions, except per share data)
 
          
Net income attributable to MTI
 
$
195.1
  
$
133.4
  
$
107.9
 
             
             
Weighted average shares outstanding
  
35.2
   
34.9
   
34.7
 
Dilutive effect of stock options and stock units
  
0.4
   
0.3
   
0.3
 
Weighted average shares outstanding, adjusted
  
35.6
   
35.2
   
35.0
 
             
Basic earnings per share attributable to MTI
 
$
5.54
  
$
3.82
  
$
3.11
 
             
Diluted earnings per share attributable to MTI
 
$
5.48
  
$
3.79
  
$
3.08