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Inventories (Tables)
 12 Months Ended
Dec. 31, 2017
Text block1 [abstract]  
Schedule of Inventories
     At December 31
2017		      At December 31
2016		  

Supplies

    $ 237      $ 230  

Finished goods

      112        76  

Work-in-process

      66        45  

Stockpiled ore

      42        35  

Heap leach ore

      —          12  
  

 

 

     

 

 

  
     457        398  

Less: non-current heap leach and stockpiled ore

      (16 )       (28 ) 
  

 

 

     

 

 

  
   $ 441      $ 370  
  

 

 

     

 

 

  

 

(a) The costs of inventories recognized as expense for the year ended December 31, 2017 amounted to $2,719 million (2016 – $2,952 million), of which $1,753 million (2016 – $1,953 million) and $966 million (2016 – $999 million) was included in production costs and depreciation and depletion in the Consolidated Statements of Earnings, respectively.