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INVENTORIES INVENTORIES (Notes)
 12 Months Ended
Dec. 31, 2020
Disclosure of inventories [Abstract]  
Disclosure of inventories [text block] Inventories
Gold Copper
  As at December 31, 2020 As at December 31, 2019 As at December 31, 2020 As at December 31, 2019
Raw materials
   Ore in stockpiles $2,742  $2,678  $114  $155 
   Ore on leach pads 591  623  —  — 
Mine operating supplies 615  617  54  52 
Work in process 117  141  —  — 
Finished products 114  220  97  103 
$4,179  $4,279  $265  $310 
Non-current ore in stockpiles and on leach pads1
 (2,452) (2,300) (114) — 
  $1,727  $1,979  $151  $310 
1Ore that we do not expect to process in the next 12 months is classified within other long-term assets.

Inventory Impairment Charges
For the years ended December 31 2020 2019
Cortez $17  $4 
Phoenix 10  — 
Carlin 2  6 
Pierina —  12 
Golden Sunlight —  4 
Inventory impairment charges $29  $26 
 
Ore in Stockpiles As at December 31, 2020 As at December 31, 2019
Gold
Carlin $1,029  $1,020 
Pueblo Viejo 646  649 
Turquoise Ridge 365  258 
Loulo-Gounkoto 171  167 
North Mara 133  136 
Cortez 127  174 
Lagunas Norte 73  73 
Veladero 58  52 
Phoenix 47  39 
Tongon 33  29 
Porgera 30  33 
Buzwagi 15  47 
Hemlo 14  1 
Other 1  — 
Copper
Lumwana 114  155 
  $2,856  $2,833 
Ore on Leach pads As at December 31, 2020 As at December 31, 2019
Gold
Carlin $179  $180 
Veladero 133  123 
Lagunas Norte 121  148 
Cortez 58  50 
Turquoise Ridge 39  33 
Long Canyon 33  43 
Phoenix 26  44 
Pierina 2  2 
  $591  $623 
Purchase Commitments
At December 31, 2020, we had purchase obligations for supplies and consumables of approximately $1,882 million (2019: $1,681 million).