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Goodwill (Tables)
12 Months Ended
Dec. 31, 2017
Text block1 [abstract]  
Changes in Goodwill
     UNITED STATES DOLLAR  
     2017     2016  

Balance at beginning of the year

     317.8       295.3  

Impairment

     (277.8     —    

Translation adjustment

     36.6       22.5  
  

 

 

   

 

 

 

Balance at end of the year

     76.6       317.8