The amount of surplus on issuance of non-controlling interest.

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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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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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Portion of equity (net assets) in a subsidiary not attributable, directly or indirectly, to the parent entity which is not redeemable by the parent entity.

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The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

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Percentage of subsidiary's or equity investee's stock owned by parent company before stock transaction.

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No definition available.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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Number of new stock issued during the period.

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NON-CONTROLLING INTERESTS (Details) - USD ($) $ / shares in Units, $ in Millions			12 Months Ended
	Aug. 23, 2021	May 23, 2019	Dec. 31, 2021
Noncontrolling Interest
Stock issued during the period (in shares)		1,935,484
McEwen Copper
Noncontrolling Interest
Percentage of ownership by noncontrolling shareholders			18.60%
Percentage of ownership by company before private placement			100.00%
Nonredeemable non-controlling interest			$ 14.8
Contributed Surplus			$ 25.2
Sale To Related Parties \| McEwen Copper
Noncontrolling Interest
Stock issued during the period (in shares)	4,000,000
Share price	$ 10.00
Gross proceeds from private placement offering	$ 40.0
Percentage of ownership by noncontrolling shareholders			18.60%