SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	9 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	Sep. 30, 2022
Accounting Policies [Abstract]
Risks and Uncertainties	Risks and Uncertainties As a mining company, the revenue, profitability and future rate of growth of the Company are substantially dependent on the prevailing prices for gold, silver, lead and zinc. The prices of these metals are volatile and affected by many factors beyond the Company’s control, and there can be no assurance that commodity prices will not be subject to wide fluctuations in the future. A substantial or extended decline in commodity prices could have a material adverse effect on the Company’s financial position, results of operations, cash flows, access to capital and the quantities of reserves that the Company can economically produce. The carrying value of the Company’s Mineral properties, plant and equipment; Inventories; Deferred income tax assets; and Goodwill are sensitive to the outlook for commodity prices. A decline in the Company’s price outlook could result in material impairment charges related to these assets.
Basis of Presentation	Basis of Presentation The Condensed Consolidated Financial Statements have been prepared in accordance with the instructions to Form 10-Q and do not include all information and disclosures required by generally accepted accounting principles in the United States. Therefore, this information should be read in conjunction with SSR Mining Inc.’s Consolidated Financial Statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021 filed on February 23, 2022. The information furnished herein reflects all adjustments that are, in the opinion of management, necessary for a fair statement of the results for the interim periods reported. All such adjustments are, in the opinion of management, of a normal recurring nature. The results for the nine month period ended September 30, 2022, are not necessarily indicative of the results that may be expected for the year ending December 31, 2022.
Reclassifications	Reclassifications Certain amounts and disclosures in prior years have been reclassified to conform to the current year presentation.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In September 2022, the Financial Accounting Standards Board (“FASB”) issued ASU 2022-04, “Liabilities - Supplier Finance Programs: Disclosure of Supplier Finance Program Obligations,” which makes changes to add certain disclosure requirements for a buyer in a supplier finance program. The amendments require a buyer that uses supplier finance programs to make annual disclosures about the program’s key terms, the balance sheet presentation of related amounts, the confirmed amount outstanding at the end of the period, and associated rollforward information. Only the amount outstanding at the end of the period must be disclosed in interim periods. The amendments are effective for all entities for fiscal years beginning after December 15, 2022 on a retrospective basis, including interim periods within those fiscal years, except for the requirement to disclose rollforward information, which is effective prospectively for fiscal years beginning after December 15, 2023. Early adoption is permitted upon issuance of the update. The provisions of this new pronouncement are being reviewed, but it is not expected this guidance will have a material impact on the Consolidated Financial Statements.