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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 ($)
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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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