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Net Change in Operating Assets and Liabilities (Tables)
6 Months Ended
Jun. 30, 2011
Net Change in Operating Assets and Liabilities (Tables) [Abstract]  
Net Changes in Operating Assets and Liabilities
   Six Months Ended June 30, 
   2011 2010 
 Decrease (increase) in operating assets:      
  Trade and accounts receivable  $121 $74 
  Inventories, stockpiles and ore on leach pads   (230)  (187) 
  EGR refinery assets   (437)  138 
  Other assets   (67)  (30) 
 Increase (decrease) in operating liabilities:      
  Accounts payable and other accrued liabilities   (349)  (90) 
  EGR refinery liabilities   437  (138) 
  Reclamation liabilities   (15)  (18) 
   $(540) $(251)