Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Feb. 15, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	1-8641
Entity Registrant Name	COEUR MINING, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	82-0109423
Entity Address, Address Line One	104 S. Michigan Ave.
Entity Address, Address Line Two	Suite 900
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60603
City Area Code	312
Local Phone Number	489-5800
Title of 12(b) Security	Common Stock (par value $.01 per share)
Trading Symbol	CDE
Security Exchange Name	NYSE
ICFR Auditor Attestation Flag	true
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Public Float			$ 1,219,854,888
Entity Common Stock, Shares Outstanding		243,575,442
Documents Incorporated by Reference	Certain information called for by Part III of the Form 10-K is incorporated by reference from the registrant’s definitive proxy statement for the 2021 Annual Meeting of Stockholders which will be filed pursuant to Regulation 14A not later than 120 days after the end of the fiscal year covered by this report.
Entity Central Index Key	0000215466
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY