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IMPAIRMENT AND REVERSAL OF NON-CURRENT ASSETS - Impairment Losses (Reversals) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |
Impairment (reversals) charges | $ (212) | $ (250)
Individual assets | Bulyanhulu |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |
Impairment (reversals) charges | 740 | 0
Individual assets | Veladero |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |
Impairment (reversals) charges | 0 | (275)
Individual assets | Cerro Casale |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |
Impairment (reversals) charges | (1,120) | 0
Individual assets | Lumwana |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |
Impairment (reversals) charges | (259) | 0
Individual assets | Lagunas Norte |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |
Impairment (reversals) charges | 3 | (28)
Individual assets | Pascua-Lama |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |
Impairment (reversals) charges | 407 | 0
Individual assets | Zaldívar |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |
Impairment (reversals) charges | 0 | 49
Individual assets | Exploration sites |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |
Impairment (reversals) charges | 12 | 0
Individual assets | Other |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |
Impairment (reversals) charges | $ 5 | $ 4

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- Definition The amount of impairment loss, impairment gain or reversal of impairment loss that is recognised in profit or loss in accordance with paragraph 5.5.8 of IFRS 9 and that arises from applying the impairment requirements in Section 5.5 of IFRS 9. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2018-01-01 -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 82 -Subparagraph ba -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_82_ba&doctype=Standard -URIDate 2017-03-09 + Details
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