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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%

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