SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Tangible Assets (Details)	12 Months Ended
	Dec. 31, 2022
Preparation plants, processing facilities and mineral rights | Minimum
Property, Plant and Equipment
Estimated useful life	1 year
Preparation plants, processing facilities and mineral rights | Maximum
Property, Plant and Equipment
Estimated useful life	26 years
Other plant and equipment and mining equipment | Minimum
Property, Plant and Equipment
Estimated useful life	1 year
Other plant and equipment and mining equipment | Maximum
Property, Plant and Equipment
Estimated useful life	26 years
Buildings, Office Equipment And Improvements | Minimum
Property, Plant and Equipment
Estimated useful life	1 year
Buildings, Office Equipment And Improvements | Maximum
Property, Plant and Equipment
Estimated useful life	26 years