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THE COMPANY (Details 2) (El Gallo Complex) | 12 Months Ended
--- | ---
Dec. 31, 2012 oz
Gold |
Company |
Quantity produced (in ounces) | 6,863
Silver |
Company |
Quantity produced (in ounces) | 4,492

X
- Definition Represents the quantity of physical commodities produced by the entity during the period. + References No definition available. + Details
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Namespace Prefix: | mux_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | duration

X
- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration