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INVENTORIES
 12 Months Ended
Dec. 31, 2020
Disclosure of inventories [Abstract]  
INVENTORIES INVENTORIES
US Dollars
Figures in millions202020192018
Non-current
Raw materials - ore stockpiles69 93 106 
Current
Raw materials
- ore stockpiles262 229 251 
- heap-leach inventory5 4 3 
Work in progress
- metals in process46 51 44 
Finished goods
- gold doré/bullion42 42 57 
- by-products— 1 — 
Total metal inventories355 327 355 
Mine operating supplies378 305 297 
733 632 652 
Total inventories(1)
802 725 758 

(1)The amount of the write-down of ore stockpiles and mine operating supplies to net realisable value, and recognised as an expense in cost of sales is $7m (2019: $4m; 2018: $19m).