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FINANCIAL INSTRUMENTS - Debt Interest Costs (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Disclosure of detailed information about borrowings [line items]    
Interest cost $ 436 $ 453
Borrowing costs capitalised (14) (9)
Interest costs capitalized 14 9
Interest cost incurred 422 444
Deposits on Pascua-Lama silver sale agreement (note 29)    
Disclosure of detailed information about borrowings [line items]    
Interest cost $ 70 $ 65
Effective rate (as percent) 8.75% 8.25%
Deposits on Pueblo Viejo gold and silver streaming agreement (note 29)    
Disclosure of detailed information about borrowings [line items]    
Interest cost $ 34 $ 33
Effective rate (as percent) 6.79% 6.41%
4.4%/5.7% notes    
Disclosure of detailed information about borrowings [line items]    
Interest cost $ 49 $ 63
Effective rate (as percent) 5.74% 5.25%
3.85%/5.25% notes    
Disclosure of detailed information about borrowings [line items]    
Interest cost $ 53 $ 53
Effective rate (as percent) 4.87% 4.87%
5.80% notes    
Disclosure of detailed information about borrowings [line items]    
Interest cost $ 23 $ 23
Effective rate (as percent) 5.87% 5.85%
6.35% notes    
Disclosure of detailed information about borrowings [line items]    
Interest cost $ 38 $ 39
Effective rate (as percent) 6.41% 6.41%
Other fixed rate notes    
Disclosure of detailed information about borrowings [line items]    
Interest cost $ 77 $ 83
Effective rate (as percent) 6.33% 6.16%
Capital leases    
Disclosure of detailed information about borrowings [line items]    
Interest cost $ 6 $ 2
Effective rate (as percent) 7.14% 6.18%
Other debt obligations    
Disclosure of detailed information about borrowings [line items]    
Interest cost $ 34 $ 38
Effective rate (as percent) 6.17% 6.55%
Five Point Seven Five Notes [Member]    
Disclosure of detailed information about borrowings [line items]    
Interest cost $ 49 $ 49
Effective rate (as percent) 5.79% 5.79%
Acacia Credit Facility    
Disclosure of detailed information about borrowings [line items]    
Interest cost $ 3 $ 5
Effective rate (as percent) 3.36% 3.59%