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Expenses by Nature (Tables)
 12 Months Ended
Dec. 31, 2018
Text block [abstract]  
Schedule of Expenses by Nature
     2018      2017  

(CAD$ in millions)

   

 

      (restated)  

Employment-related costs:

      

Wages and salaries

    $ 1,005      $ 899  

Employee benefits and other wage-related costs

      247        236  

Bonus payments

      191        192  

Post-employment benefits and pension costs

      112        122  
  

 

 

     

 

 

  
     1,555        1,449  

Transportation

      1,408        1,245  

Depreciation and amortization

      1,483        1,492  

Raw material purchases

      914        824  

Fuel and energy

      830        657  

Operating supplies consumed

      640        569  

Maintenance and repair supplies

      775        698  

Contractors and consultants

      738        570  

Overhead costs

      365        287  

Royalties

      370        453  

Other operating costs

      15        9  
  

 

 

     

 

 

  
     9,093        8,253  

Less:

      

Capitalized production stripping costs

      (707 )       (678 ) 

Change in inventory

      (197 )       (3 ) 
  

 

 

     

 

 

  

Total cost of sales, general and administration, exploration and research and development expenses

    $ 8,189      $ 7,572