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ACQUISITIONS AND DIVESTITURES - Business Acquisition, Pro Forma Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Business Combination, Pro Forma Information [Line Items]
CC&V transaction and integration costs	$ 4,958	$ 0	$ 11,753	$ 0
CC&V
Business Combination, Pro Forma Information [Line Items]
Revenue		263,807	810,231	553,695
Net income attributable to SSR Mining shareholders		$ 40,527	$ 184,213	$ (227,197)

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