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ACQUISITIONS AND DIVESTITURES - Business Acquisition, Pro Forma Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Business Combination, Pro Forma Information [Line Items] |  |  |  |
CC&V transaction and integration costs | $ 7,287 | $ 0 | $ 19,040 | $ 0
CC&V |  |  |  |
Business Combination, Pro Forma Information [Line Items] |  |  |  |
Revenue |  | 351,289 | 1,196,070 | 904,984
Net income attributable to SSR Mining shareholders |  | $ 47,103 | $ 249,778 | $ (180,094)

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