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REVENUE FROM PRODUCT SALES (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of revenue [Abstract]      
Gold income (note 2) $ 4,322 $ 3,439 $ 3,203
By-products (note 2) 105 86 133
Revenue from product sales $ 4,427 $ 3,525 $ 3,336