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Employee Costs (Tables)
 12 Months Ended
Dec. 31, 2017
Text block1 [abstract]  
Schedule of Employee Benefits Cost
           

For the year ended

December 31

  
            2017                2016  
      Note      $      $  

Wages, salaries, and benefits

         2,444.8        2,211.7  

Pension costs

         70.2        58.9  

Share-based compensation

      25        9.5        8.9  

Total employee costs

               2,524.5        2,279.5  

Direct labor

                 1,589.4        1,422.1  

Indirect labor

               935.1        857.4  

Total employee costs

               2,524.5        2,279.5