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ASSETS AND LIABILITIES HELD FOR SALE - Narrative (Details) - Disposal Group, Disposed of by Sale - Pitarrilla Project - Subsequent Event $ in Millions	Jul. 06, 2022 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration in cash	$ 35.0
Consideration in equity	$ 35.0
Smelter
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Royalty fee, percentage	1.25%

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- Definition

Disposal Group, Including Discontinued Operation, Consideration, Equity

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- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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