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FINANCIAL INSTRUMENTS - Debt Narrative (Details) - USD ($) |  |  |  | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
May 02, 2013 | Oct. 16, 2009 | Mar. 19, 2009 | Jan. 31, 2013 | Jan. 31, 2012 | Sep. 30, 2008 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2013 | Apr. 03, 2012 | Jun. 30, 2011 | Apr. 30, 2010
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  | $ 5,738,000,000 | $ 6,423,000,000 | $ 7,931,000,000 |  |  |  |  |
Repayments |  |  |  |  |  |  | 687,000,000 | 1,533,000,000 |  |  |  |  |  |
BNAF Notes Due 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings, interest rate (as percent) |  |  |  |  |  |  |  |  |  |  |  |  | 1.75% |
Repayments |  |  |  |  |  |  |  |  |  |  | $ 700,000,000 |  |  |
Barrick Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate (as percent) |  |  |  |  |  |  |  |  |  |  |  |  | 2.90% |
Repayments |  |  |  |  |  |  |  | 229,000,000 |  |  | 871,000,000 |  |  |
BNAF Notes Due 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings, interest rate (as percent) |  |  |  |  |  |  |  |  |  |  |  |  | 4.40% |
Borrowings |  |  |  |  |  |  | 0 | 629,000,000 |  |  |  |  |  |
Repayments |  |  |  |  |  |  | 0 | 721,000,000 |  |  |  |  |  |
BNAF Notes Due 2041 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate (as percent) |  |  |  |  |  |  |  |  |  |  |  |  | 5.70% |
Borrowings |  |  |  |  |  |  | 850,000,000 | 850,000,000 |  |  |  |  |  |
3.85%/5.25% Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings |  |  |  |  |  |  | 1,079,000,000 | 1,079,000,000 | 1,078,000,000 |  |  |  |  |
Repayments |  |  |  |  |  |  | $ 0 | $ 0 |  |  |  |  |  |
Effective rate (as percent) |  |  |  |  |  |  | 4.87% | 4.87% |  |  |  |  |  |
3.85% Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate (as percent) |  |  |  |  |  |  |  |  |  |  |  | 3.85% |  |
Repayments |  |  |  |  |  |  |  |  |  | $ 913,000,000 |  |  |  |
5.25% Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate (as percent) |  |  |  |  |  |  |  |  |  |  |  | 5.25% |  |
Other fixed rate notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  | $ 1,326,000,000 | $ 1,326,000,000 | 1,607,000,000 |  |  |  |  |
Repayments |  |  |  |  |  |  | $ 0 | $ 279,000,000 |  |  |  |  |  |
Effective rate (as percent) |  |  |  |  |  |  | 6.16% | 6.38% |  |  |  |  |  |
BPADF Notes Due 2039 |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings, interest rate (as percent) |  | 5.95% |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  | $ 850,000,000 | $ 850,000,000 |  |  |  |  |  |
Term of borrowings |  | 30 years |  |  |  |  |  |  |  |  |  |  |  |
BPDAF Notes Due 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate (as percent) |  | 4.95% |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  | 248,000,000 | 248,000,000 |  |  |  |  |  |
Repayments |  |  |  |  |  |  |  | 152,000,000 |  |  |  |  |  |
Term of borrowings |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |
6.95% notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate (as percent) |  |  | 6.95% |  |  |  |  |  |  |  |  |  |  |
Repayments |  |  |  |  |  |  | $ 279,000,000 | 196,000,000 |  | 275,000,000 |  |  |  |
Term of borrowings |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |
6.125% Notes Due 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings, interest rate (as percent) |  |  |  |  |  | 6.125% |  |  |  |  |  |  |  |
Term of borrowings |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |
6.8 Percent Notes Due 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings, interest rate (as percent) |  |  |  |  |  | 6.80% |  |  |  |  |  |  |  |
Term of borrowings |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |
7.50% Notes Due 2038 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate (as percent) |  |  |  |  |  | 7.50% |  |  |  |  |  |  |  |
Term of borrowings |  |  |  |  |  | 30 years |  |  |  |  |  |  |  |
Pueblo Viejo Project financing |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  | 0 | 400,000,000 |  |  |  |  |
Repayments |  |  |  |  |  |  |  | $ 423,000,000 |  |  |  |  |  |
Effective rate (as percent) |  |  |  |  |  |  | 0.00% | 7.04% |  |  |  |  |  |
Credit Facility Due 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread (as percent) |  |  |  |  | 1.25% |  |  |  |  |  |  |  |  |
Commitment fee (as percent) |  |  |  |  | 0.175% |  |  |  |  |  |  |  |  |
Credit Facility Due 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments | $ 2,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
4.10%/5.75% notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  | $ 842,000,000 | $ 842,000,000 | 1,569,000,000 |  |  |  |  |
Repayments |  |  |  |  |  |  | $ 0 | $ (731,000,000) |  |  |  |  |  |
Effective rate (as percent) |  |  |  |  |  |  | 5.79% | 5.12% |  |  |  |  |  |
2.5 Percent Notes Due 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings, interest rate (as percent) | 2.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments |  |  |  |  |  |  | $ 123,000,000 |  |  | 129,000,000 | 398,000,000 |  |  |
4.10% Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate (as percent) | 4.10% |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments |  |  |  |  |  |  | 731,000,000 |  |  | 769,000,000 |  |  |  |
5.75% Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate (as percent) | 5.75% |  |  |  |  |  |  |  |  |  |  |  |  |
Acacia Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  | 43,000,000 | $ 71,000,000 | 99,000,000 |  |  |  |  |
Repayments |  |  |  |  |  |  | $ 28,000,000 | $ 28,000,000 | $ 29,000,000 | $ 14,000,000 |  |  |  |
Term of borrowings |  |  |  | 7 years |  |  |  |  |  |  |  |  |  |
Repayment holiday period |  |  |  | 2 years |  |  |  |  |  |  |  |  |  |
Effective rate (as percent) |  |  |  | 3.60% |  |  | 3.59% | 3.59% |  |  |  |  |  |
Gross amount |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  | $ 5,747,000,000 |  |  |  |  |  |  |
Gross amount | BNAF Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,000,000,000 |
Gross amount | BNAF Notes Due 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings |  |  |  |  |  |  |  |  |  |  |  |  | 700,000,000 |
Gross amount | Barrick Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings |  |  |  |  |  |  |  |  |  |  |  |  | 1,100,000,000 |
Gross amount | BNAF Notes Due 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings |  |  |  |  |  |  |  |  |  |  |  |  | 1,350,000,000.00 |
Gross amount | BNAF Notes Due 2041 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  |  |  | $ 850,000,000 |
Gross amount | 3.85%/5.25% Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  |  | $ 2,000,000,000 |  |
Gross amount | 3.85% Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings |  |  |  |  |  |  | 337,000,000 |  |  |  |  | 1,250,000,000 |  |
Gross amount | 5.25% Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings |  |  |  |  |  |  | 750,000,000 |  |  |  |  | $ 750,000,000 |  |
Gross amount | Other fixed rate notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings |  | $ 1,250,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Gross amount | BPADF Notes Due 2039 |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings |  | 850,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Gross amount | BPDAF Notes Due 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings |  | $ 400,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Gross amount | 6.95% notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  | $ 750,000,000 |  |  |  |  |  |  |  |  |  |  |
Gross amount | LLCs Notes Due 2013, Due 2019 and Due 2038 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  | $ 1,250,000,000 |  |  |  |  |  |  |  |
Gross amount | 6.125% Notes Due 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  | 500,000,000 |  |  |  |  |  |  |  |
Repayments |  |  |  |  |  |  |  |  |  |  | $ 500,000,000 |  |  |
Gross amount | 6.8 Percent Notes Due 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  | 500,000,000 |  |  |  |  |  |  |  |
Repayments |  |  |  |  |  |  | 500,000,000 |  |  |  |  |  |  |
Gross amount | 7.50% Notes Due 2038 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  | $ 250,000,000 | 250,000,000 |  |  |  |  |  |  |
Gross amount | Pueblo Viejo Project financing |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,035,000,000
Gross amount | Credit Facility Due 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility available |  |  |  |  | $ 3,000,000,000 |  |  |  |  |  |  |  |  |
Gross amount | 4.10%/5.75% notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings | $ 3,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Gross amount | 2.5 Percent Notes Due 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings | 650,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Gross amount | 4.10% Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings | 1,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Gross amount | 5.75% Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Borrowings | $ 850,000,000 |  |  |  |  |  | 850,000,000 |  |  |  |  |  |  |
Gross amount | Acacia Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  | $ 42,000,000 |  |  |  |  |  |  |
Credit facility available |  |  |  | $ 142,000,000 |  |  |  |  |  |  |  |  |  |
Variable rate | Acacia Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread (as percent) |  |  |  | 2.50% |  |  |  |  |  |  |  |  |  |

X
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- Definition Line of credit facility, commitment fee percentage1 + References No definition available. + Details
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- Definition Line of credit facility, maximum borrowing capacity1 + References No definition available. + Details
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- Definition The amount of outstanding funds that the entity is obligated to repay. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_55&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_7&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_7&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The cash outflow to settle borrowings, classified as financing activities. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2018-01-01 -Paragraph 17 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2018-03-01&anchor=para_17_d&doctype=Standard -URIDate 2018-03-16 + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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