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ÇÖPLER INCIDENT - Narrative (Details) - USD ($)		3 Months Ended			6 Months Ended
	Mar. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Impairment charges		$ 0		$ 0	$ 114,230,000	$ 0
Çöpler Incident
Segment Reporting Information [Line Items]
Direct costs		17,300,000			25,000,000
Depreciation		13,300,000			$ 20,000,000
Estimated future cost	$ 250,000,000
Incurred remediation costs			$ 22,500,000
Reclamation adjustments, changes in estimates			11,200,000
Increase to remediation liability			261,700,000
Impairment charges		$ 0	114,200,000	$ 0		$ 0
Contingencies related to the Çöpler incident			15,310,000
Çöpler Incident | Inventories
Segment Reporting Information [Line Items]
Impairment charges			76,000,000
Çöpler Incident | Mineral properties, plant and equipment, net
Segment Reporting Information [Line Items]
Impairment charges			$ 38,200,000
Çöpler Incident | Minimum
Segment Reporting Information [Line Items]
Estimated future cost	250,000,000.0
Çöpler Incident | Maximum
Segment Reporting Information [Line Items]
Estimated future cost	$ 300,000,000

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