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Number of years before government option to acquire remaining equity stake in Porgera

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Number of years of extension of the special mining lease

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Proportion of economic benefits received by other parties in joint venture

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Proportion of economic benefits received in joint venture

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Proportion of ownership by other parties in joint ventures

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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.

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The amount of the estimated financial effect of contingent liabilities. [Refer: Contingent liabilities [member]]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Joint ventures [member]]

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CONTINGENCIES (Details)				6 Months Ended
CONTINGENCIES (Details)	Apr. 09, 2021	Feb. 10, 2021 numberOfAffidavits	Apr. 25, 2020	Jun. 30, 2021 USD ($)
Reko Diq [Member]
Disclosure of contingent liabilities [line items]
Proportion of ownership interest in joint venture				50.00%
Porgera
Disclosure of contingent liabilities [line items]
Proportion of ownership interest in joint venture	49.00%		95.00%
Number of years of extension of the Porgera special mining lease			20 years
Percent of ownership by other parties in joint ventures	51.00%
Proportion of economic benefits received by other parties in joint venture	53.00%
Proportion of economic benefits received in joint venture	47.00%
Number of years before government option to acquire remaining equity stake in Porgera	10 years
Legal proceedings contingent liability [member] \| Canadian Class Action [Member]
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities				$ 0
Legal proceedings contingent liability [member] \| Writ of Kalikasan [Member]
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities				0
Contingent liabilities, number of additional judicial affidavits \| numberOfAffidavits		1
Legal proceedings contingent liability [member] \| Reko Diq Arbitration [Member]
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities				0
Legal proceedings contingent liability [member] \| Porgera Tax Audits [Member]
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities				$ 0