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NON-CONTROLLING INTERESTS (Details) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Aug. 31, 2022	Jun. 21, 2022	Aug. 23, 2021	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2022
Noncontrolling Interest
Non-controlling interests				$ 33,465	$ 14,777
Issuance of equity by subsidiary (Note 20)				41,350	40,000
Net loss attributed to non-controlling interests				(5,019)	(172)
Noncontrolling Interest
Noncontrolling Interest
Non-controlling interests					200
Issuance of equity by subsidiary (Note 20)				23,707	$ 14,949
Net loss attributed to non-controlling interests				$ 5,000
McEwen Copper | Noncontrolling Interest
Noncontrolling Interest
Company's non-redeemable non-controlling interests (as a percent)				31.87%	18.60%
Series B Private Placement Offering - Tranche One
Noncontrolling Interest
Non-controlling interests					$ 14,900
Additional paid-in-capital					$ 25,100
Percentage of ownership by company before private placement		81.40%	100.00%
Percentage decrease of stock owned by parent of subsidiary's or equity investee			18.60%
Percentage of ownership by company after private placement			81.40%
Series B Private Placement Offering - Tranche One | McEwen Copper
Noncontrolling Interest
Shares sold by the subsidiary			4,000,000
Share price			$ 10.00
Gross proceeds from private placement offering			$ 40,000
Company's non-redeemable non-controlling interests (as a percent)			18.60%
Series B Private Placement Offering - Tranche One | McEwen Copper | Affiliate of Robert McEwen
Noncontrolling Interest
Percentage of ownership by noncontrolling shareholders			18.60%		18.60%
Series B Private Placement Offering - Tranche Two
Noncontrolling Interest
Non-controlling interests				$ 7,600
Additional paid-in-capital				7,400
Percentage of ownership by company before private placement	76.09%
Percentage decrease of stock owned by parent of subsidiary's or equity investee		5.31%
Percentage of ownership by company after private placement		76.09%
Series B Private Placement Offering - Tranche Two | McEwen Copper
Noncontrolling Interest
Shares sold by the subsidiary		1,500,000
Share price		$ 10.00
Gross proceeds from private placement offering		$ 15,000
Company's non-redeemable non-controlling interests (as a percent)		23.91%
Series B Private Placement Offering - Tranche Two and Three | McEwen Copper | Affiliate of Robert McEwen
Noncontrolling Interest
Percentage of ownership by noncontrolling shareholders						15.57%
Series B Private Placement Offering - Third and final Tranche
Noncontrolling Interest
Non-controlling interests				16,100
Additional paid-in-capital				$ 10,800
Percentage decrease of stock owned by parent of subsidiary's or equity investee	7.96%
Percentage of ownership by company after private placement	68.13%
Series B Private Placement Offering - Third and final Tranche | McEwen Copper
Noncontrolling Interest
Shares sold by the subsidiary	2,685,000
Share price	$ 10.00
Gross proceeds from private placement offering	$ 26,900
Company's non-redeemable non-controlling interests (as a percent)	31.87%

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