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IMPAIRMENT AND REVERSAL OF NON-CURRENT ASSETS - Impairment Losses (Reversals) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment (reversals) charges		$ 900	$ (212)
Individual assets | Bulyanhulu
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment (reversals) charges		0	740
Individual assets | Veladero
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment (reversals) charges		30	0
Individual assets | Lumwana [Member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment (reversals) charges		0	(259)
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		(7)	407
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		0	(1,120)
Individual assets | Veladero
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment (reversals) charges		246	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		405	3
Individual assets | Barrick Nevada [Member]
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment (reversals) charges		14	0
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		24	12
Individual assets | Other
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment (reversals) charges		34	5
Impairment (reversals) of long lived assets
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment (reversals) charges		746
Impairment (reversals) of long lived assets | 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	$ (429)
Goodwill
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment (reversals) charges		154	0
Goodwill | Veladero
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]
Impairment (reversals) charges		$ 154	$ 0

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No definition available.

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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.

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