SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Range [Domain] Statistical Measurement [Domain] Property, plant and equipment and mining properties Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment Business Combination [Abstract] Business Combination [Abstract] Condensed Balance Sheet Condensed Balance Sheet [Table Text Block] Franco-Nevada Franco-Nevada [Member] Franco-Nevada [Member] Settled Litigation Settled Litigation [Member] Award Timing Predetermined Award Timing Predetermined [Flag] Entity File Number Entity File Number Additional Paid-In Capital Additional Paid-in Capital [Member] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Deferred cash consideration Business Combination, Contingent Consideration, Asset, Current Additional Comprehensive Income (Loss) Detail Other Income and Other Expense Disclosure [Text Block] Tabular List, Table Tabular List [Table Text Block] Basic EPS Earnings Per Share, Basic [Abstract] Recent Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] February 20, 2026, Tranche 1 February 20, 2026, Tranche 1 [Member] February 20, 2026, Tranche 1 Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Financial Assets and Liabilities not Measured at Fair Value Fair Value, by Balance Sheet Grouping [Table Text Block] Interest expense, net of capitalized interest Interest Income (Expense), Nonoperating Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Measurement Basis [Axis] Measurement Basis [Axis] Earnings Per Share, Basic Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Liabilities: Liabilities, Fair Value Disclosure [Abstract] (Gain) loss on sale of assets (Gain) loss on sale of assets (Gain) loss on sale of assets Asset Retirement Obligation, Liabilities Settled Asset Retirement Obligation, Liabilities Settled Subsidiary or Equity Method Investee, Sale of Stock, Type [Table] Subsidiary or Equity Method Investee, Sale of Stock, Type [Table] Award Date [Axis] Award Date [Axis] Financial information relating to the reporting segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Measurement Input Type [Domain] Measurement Input Type [Domain] Asset Retirement Obligation, Revision of Estimate Asset Retirement Obligation, Revision of Estimate Adjustment to Compensation, Amount Adjustment to Compensation Amount Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Accounts and Financing Receivables [Table] Accounts and Financing Receivables [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] 2032 Senior Notes Indenture 2032 Senior Notes Indenture [Member] 2032 Senior Notes Indenture Value of equity instruments vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested Stockholders' equity Beginning balance Ending balance Equity, Attributable to Parent OTHER COMPREHENSIVE INCOME (LOSS), Net of Tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Insider Trading Policies and Procedures [Line Items] Compensation expense for stock based compensation awards Share-Based Payment Arrangement, Expense Property, plant and equipment Property, Plant and Equipment [Table Text Block] Common stock, shares authorized (in shares) Common Stock, Shares Authorized 2029 Senior Notes 2029 Senior Notes [Member] 2029 Senior Notes Common stock issued for investment (in shares) Stock Issued During Period, Shares, New Issues CURRENT ASSETS Assets, Current [Abstract] TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Stock issued during period, acquisitions (in shares) Stock Issued During Period, Shares, Acquisitions Ore on leach pads Ore on Leach Pad, Current Ore on Leach Pad, Current Ore on leach pad current. Outstanding Provisionally Priced Sales Consists of Gold Outstanding Provisionally Priced Sales Consists of Gold Outstanding provisionally priced sales consists of Gold. Proceeds from the sale of assets Increase (Decrease) From The Sale Of Assets Increase (Decrease) From The Sale Of Assets State and Local Jurisdiction State and Local Jurisdiction [Member] Cover [Abstract] Cover [Abstract] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Maximum Maximum [Member] Property, plant and equipment Property, Plant and Equipment, Net [Abstract] Accounting Policies [Abstract] Accounting Policies [Abstract] Restricted stock Restricted Stock [Member] Stockpile ore Inventory, Stockpile Ore, Net Of Reserves Inventory, Stockpile Ore, Net Of Reserves Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Derivative average price Derivative Average Price Derivative Average Price. Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Franco-Nevada Gold Stream Agreement Franco-Nevada Gold Stream Agreement [Member] Franco-Nevada Gold Stream Agreement Senior Notes due 2029 Senior Notes due Two Thousand Twenty Nine [Member] Senior Notes due Two Thousand Twenty Nine Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount LIABILITIES Liabilities [Abstract] Accrued salaries and wages Accrued Salaries, Current Acquisitions Business Combination [Text Block] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Transaction advisory fees and other acquisition costs Business Combination, Consideration Transferred, Transaction Advisory Fees And Other Acquisition Costs Business Combination, Consideration Transferred, Transaction Advisory Fees And Other Acquisition Costs Income (loss) before income and mining taxes Income (loss) before income and mining taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company New Gold, Inc. New Gold, Inc. [Member] New Gold, Inc. Receivables Accounts Receivable, after Allowance for Credit Loss, Noncurrent Accounts Receivable, after Allowance for Credit Loss, Noncurrent Palmarejo gold production royalty Palmarejo gold stream agreement [Member] Palmarejo gold stream agreement [Member] Other long-term liabilities Other Liabilities, Noncurrent Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Taxes other than income and mining Accrual for Taxes Other than Income Taxes, Current Recoverable ounces of ore on leachpads Inventory And Ore On Leach Pads, Recoverable Inventory And Ore On Leach Pads, Recoverable Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Contract With Customer, Liability [Domain] Contract With Customer, Liability [Domain] Contract With Customer, Liability [Domain] Operating Segments Operating Segments [Member] Schedule of Cash Flow, Supplemental Disclosures Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Revolving Credit Facility Credit Agreement [Member] Credit Agreement Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] COMPREHENSIVE INCOME (LOSS) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Measurement Input Type [Axis] Measurement Input Type [Axis] Name Measure Name Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent United States, Income (loss) before tax Income (Loss) from Continuing Operations before Income Taxes, Domestic Operating lease liabilities Operating Lease, Liability, Current Finance lease obligations Finance Lease, Interest Expense Deferred tax liabilities Deferred Income Tax Liabilities, Net Document Fiscal Period Focus Document Fiscal Period Focus Unsecured Debt Unsecured Debt [Member] Award Timing Method Award Timing Method [Text Block] Litigation Case [Domain] Litigation Case [Domain] Operational Mining Properties Gross Operational Mining Properties Gross Operational mining properties. Award Type [Axis] Award Type [Axis] Coeur Mining, Inc. Parent Company [Member] Legal Entity [Axis] Legal Entity [Axis] Contingent consideration (3) Disposal Group, Including Discontinued Operation, Contingent Consideration Receivable, Noncurrent Disposal Group, Including Discontinued Operation, Contingent Consideration Receivable, Noncurrent Schedule of Pro Forma Information Business Combination, Pro Forma Information [Table Text Block] Total consolidated assets Assets Price per ounce under agreement Price per ounce under agreement Price per ounce under agreement Portion at Other than Fair Value Measurement Portion at Other than Fair Value Measurement [Member] Trading Symbol Trading Symbol Geographical [Domain] Geographical [Domain] Copper Concentrates Sales Agreements Copper Concentrates Sales Agreements [Member] Copper Concentrates Sales Agreements Entity Address, City or Town Entity Address, City or Town Purchase price, increase, percentage of production, gold Asset Acquisition, Cash Purchase Price, Increase, Percentage Of Production, Gold Asset Acquisition, Cash Purchase Price, Increase, Percentage Of Production, Gold Annual Incentive Plan and Long Term Incentive Plan Annual Incentive Plan and Long Term Incentive Plan [Member] Annual incentive plan and long term incentive plan. Short-term Debt, Type [Domain] Short-Term Debt, Type [Domain] Consolidated Net Leverage Ratio Consolidated Net Leverage Ratio [Member] Consolidated Net Leverage Ratio CASH FLOWS FROM OPERATING ACTIVITIES: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Ore on leach pads, noncurrent Ore on Leach Pad Non Current Ore on leach pad non current. Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation INVENTORY AND ORE ON LEACH PADS Inventory Disclosure [Text Block] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Statement of Income Location, Balance [Domain] Statement of Income Location, Balance [Domain] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Debt Instrument, Covenant, Variable Rate [Axis] Debt Instrument, Covenant, Variable Rate [Axis] Debt Instrument, Covenant, Variable Rate Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Provisional gold and copper sales contracts Gold And Copper Sales Agreements [Member] Gold And Copper Sales Agreements Total purchase price Total consideration Business Combination, Consideration Transferred Deferred Cash Due Two Thousand Twenty Six Deferred Cash Due Two Thousand Twenty Six [Member] Deferred Cash Due Two Thousand Twenty Six Assets: Assets, Fair Value Disclosure [Abstract] Entity Emerging Growth Company Entity Emerging Growth Company Dividends declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding New Gold 2032 Senior Notes New Gold 2032 Senior Notes [Member] New Gold 2032 Senior Notes Total Assets Business Combination, Recognized Asset Acquired, Asset SUPPLEMENTAL GUARANTOR INFORMATION Condensed Financial Information of Parent Company Only Disclosure [Text Block] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Cash payment 24 months after closing Other Commitment, to be Paid, Year Three Income Tax Examination [Line Items] Income Tax Examination [Line Items] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Basis of Accounting Basis of Accounting [Text Block] Finance Lease Obligations Finance Lease Obligation [Member] Finance Lease Obligation Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Termination of gold zero cost collars Termination of gold zero cost collars Termination of gold zero cost collars recorded to earnings Cost to terminate zero cost collars related to a gold hedging program. Costs recorded to earnings. Gain (loss) on termination of lease Gain (Loss) on Termination of Lease Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Award Date [Axis] Plan Name [Axis] PEO PEO [Member] 2027 and Thereafter Derivative Instruments Settle Thereafter [Member] Derivative instruments settle thereafter. RECEIVABLES Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Income and mining taxes Accrued Income Taxes, Current Change in deferred tax asset, valuation allowance Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount United States UNITED STATES Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Stock options exercised Stock Issued During Period, Value, Stock Options Exercised Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Company Subsidary Company Subsidary [Member] Company Subsidary Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Fair value of the derivative instruments Derivative, Fair Value, Net [Abstract] Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] Effective interest rate Debt Instrument, Interest Rate, Effective Percentage Schedule of Accrued Liabilities [Table Text Block] Schedule of Accrued Liabilities [Table Text Block] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Share-Based Payment Arrangement [Abstract] Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Derivative asset Derivative Asset Income and mining tax (expense) benefit Tax (expense) benefit Income Tax Expense (Benefit) Mineral, Exploration Mineral, Exploration [Member] Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Other assets Other Assets Sale of Stock [Domain] Sale of Stock [Domain] Payments on long-term debt, capital leases, and associated costs Repayment of Long-Term Debt, Long-Term Lease Obligation, and Capital Security Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Aggregate deposit to be received Deposit to be received under gold stream agreement Deposit to be received under gold stream agreement Business Combination, Total Transaction Costs Business Combination, Total Transaction Costs Amount of total direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition. Product and Service [Domain] Product and Service [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Property, Plant and Equipment, Gross Property, Plant and Equipment, Gross New Afton New Afton [Member] New Afton Asset Retirement Obligation Disclosure [Abstract] Asset Retirement Obligation Disclosure [Abstract] Line of credit, accordion feature, higher borrowing capacity option Line of Credit Facility, Accordion Feature, Higher Borrowing Capacity Option Line of Credit Facility, Accordion Feature, Higher Borrowing Capacity Option Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Liabilities, fair value disclosure Liabilities, Fair Value Disclosure Business Combination [Table] Business Combination [Table] Summary of Grants Awarded Share-Based Payment Arrangement, Option and Stock Appreciation Rights, Activity [Table Text Block] Other Income and Expenses [Abstract] Other Income and Expenses [Abstract] Purchase price, percentage of spot price Asset Acquisition, Cash Purchase Price, Percentage of Spot Price Asset Acquisition, Cash Purchase Price, Percentage of Spot Price Schedule of Purchase Price and Acquired Assets and Liabilities Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] City Area Code City Area Code Acquisitions, net Payments to Acquire Businesses, Net of Cash Acquired Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Gain (Loss) from Litigation Settlement Gain (Loss) from Litigation Settlement Royal Gold Stream Agreement Royal Gold Stream Agreement [Member] Royal Gold Stream Agreement Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Buildings and Improvements, Gross Buildings and Improvements, Gross Summary of Contract Liability Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] CASH FLOWS FROM INVESTING ACTIVITIES: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative General and administrative General and Administrative Expense Long-Lived Assets Long-Lived Assets Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Cash provided by (used in) operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Non-current receivables: Accounts Receivable, Noncurrent, Nonaccrual Asset Retirement Obligation, Accretion Expense, Excluding Held for Sale Disposal Group. Asset Retirement Obligation, Accretion Expense, Excluding Held for Sale Disposal Group. Amount of accretion expense recognized during the period that is associated with an asset retirement obligation, excluding accretion expense incurred by assets held for sale. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability. Notional Amount Derivative Notional Amount Derivative Nominal or face amount used to calculate payment on derivative. Subsequent Event Subsequent Event [Member] Revenues from External Customers and Long-Lived Assets [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] Goodwill Goodwill Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Estimate of possible loss Loss Contingency, Estimate of Possible Loss PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Accounts receivable - other Accounts Receivable Other Accounts receivable other. Assets: Business Combination, Recognized Asset Acquired, Asset [Abstract] Income tax receivable Income Taxes Receivable Equity Components [Axis] Equity Components [Axis] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Las Chispas Las Chispas [Member] Las Chispas Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Subsidiary guarantee, threshold amount Debt Instrument, Covenant, Subsidiary Guarantee, Threshold Amount Debt Instrument, Covenant, Subsidiary Guarantee, Threshold Amount Accretion Accretion Expense Product Product [Member] Number of Reportable Segments Number of Reportable Segments Inventory Business Combination, Recognized Asset Acquired, Inventory, Current Grant date fair value of performance share units Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Intrinsic Value, Amount Per Share Net unamortized debt issuance costs Debt Instrument, Unamortized Discount (Premium), Net Supplemental Cash Flow Information [Abstract] Supplemental Cash Flow Information [Abstract] Short-term receivables Business Combination, Recognized Asset Acquired, Receivable, Current Other Performance Measure, Amount Other Performance Measure, Amount Inventory [Line Items] Inventory [Line Items] Debt Debt, Current Entity Address, State or Province Entity Address, State or Province Financing cash flows from finance leases Finance Lease, Principal Payments Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Security, Excluded EPS Calculation [Table] Palmarejo Palmarejo [Member] Palmarejo. Current liabilities Current liabilities Liabilities, Current Capitalized interest Interest Costs Capitalized Adjustment Litigation Status [Axis] Litigation Status [Axis] Derivative Instrument [Axis] Derivative Instrument [Axis] Individual: Individual [Axis] Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Performance share cash settlement Payments for Repurchase of Preferred Stock and Preference Stock Prepaid expenses and other Other Assets, Current Additional paid-in capital Additional Paid in Capital, Common Stock Entity [Domain] Entity [Domain] CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Provisional gain (loss) on derivatives and commodity contracts Unrealized Gain (Loss) on Derivatives and Commodity Contracts Reclamation Accrued Reclamation Costs, Current Deferred tax asset, net of valuation allowance Deferred Tax Asset, Net Of Valuation Allowance Deferred Tax Asset, Net Of Valuation Allowance Document Fiscal Year Focus Document Fiscal Year Focus Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Income and mining tax (expense) benefit Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current Plan Name [Domain] Plan Name [Domain] Acquisition related costs Business Combination, Acquisition-Related Cost, Expense Unrecognized stock-based compensation cost, weighted-average period recognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Stock options exercised (in shares) Stock options exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Equity [Abstract] Equity [Abstract] Deferred cash due 2026 Asset Acquisition, Contingent Consideration, Liability, To Be Paid, Year Two Asset Acquisition, Contingent Consideration, Liability, To Be Paid, Year Two Restricted assets Other Restricted Assets Business Combination, Contingent Consideration, Type [Axis] Business Combination, Contingent Consideration, Type [Axis] SEGMENT REPORTING Segment Reporting Disclosure [Text Block] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Ownership [Domain] Ownership [Domain] Other long-term liabilities Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Finance Lease Obligations Finance Lease Obligations [Member] Finance Lease Obligations Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Silver delivered, ounces Asset Acquisition, Silver Delivered, Ounces Asset Acquisition, Silver Delivered, Ounces New Gold Inc. Guarantor Subsidiaries [Member] Basis of Presentation [Abstract] Basis of Presentation [Abstract] Basis of Presentation [Abstract] Goodwill and Intangible Assets, Goodwill, Policy Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Purchase price, percentage of production, silver Asset Acquisition, Cash Purchase Price, Percentage of Production, Silver Asset Acquisition, Cash Purchase Price, Percentage of Production, Silver Gain losses on derivative instruments Gain Losses on Derivative Instruments [Table Text Block] Gain losses on derivative instruments. Deferred tax assets Deferred Income Tax Assets, Net Debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Debt Capital expenditures Payments to Acquire Productive Assets Payments to Acquire Productive Assets Amortization Depreciation, Depletion and Amortization Schedule of Condensed Financial Statements [Table] Condensed Financial Statements [Table] Other assets Other Assets, Noncurrent Accrued interest payable Interest Payable, Current Entity Central Index Key Entity Central Index Key PEO Name PEO Name Asset Retirement Obligation Asset Retirement Obligation Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Revolving Credit Facility Revolving Credit Facility [Member] Derivative instruments Settlement Derivative instruments Settlement [Abstract] Derivative instruments Settlement. Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Rainy River Rainy River [Member] Rainy River Schedule of Other Operating Cost and Expense, by Component Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Other operating expenses Other General Expense Segments [Axis] Segments [Axis] Fair value of the derivative instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Inventory, Ore Stockpiles on Leach Pads, Gross Inventory, Ore Stockpiles on Leach Pads, Gross Other Inventory, Net of Reserves Other Inventory, Net of Reserves Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Inventory, Current [Table] Inventory, Current [Table] Other Payment for (Proceeds from) Other Investing Activity Subsequent Event Type [Axis] Subsequent Event Type [Axis] STOCK-BASED COMPENSATION Share-Based Payment Arrangement [Text Block] Surety bonds outstanding Surety Bonds Outstanding Amount of surety bond portfolio for operations. Receivables - non-current portion Accounts Receivable, after Allowance for Credit Loss, Noncurrent [Abstract] Cash and cash equivalents Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent Issuance of notes and bank borrowings, net of issuance costs Proceeds from Issuance of Unsecured Debt Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Other Commitments [Axis] Other Commitments [Axis] Debt Instrument [Axis] Debt Instrument [Axis] FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Business Combination [Line Items] Business Combination [Line Items] (Gain) loss on debt extinguishment (Gain) loss on debt extinguishment Gain (Loss) on Extinguishment of Debt Credit Facility [Domain] Credit Facility [Domain] STOCKHOLDERS' EQUITY Equity, Attributable to Parent [Abstract] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Total number of shares purchased as part of publicly announced program Treasury Stock, Value, Acquired, Cost Method Deferred revenue Deferred Revenue Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Entity Voluntary Filers Entity Voluntary Filers Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Ownership [Axis] Ownership [Axis] DERIVATIVE FINANCIAL INSTRUMENTS Derivative Instruments and Hedging Activities Disclosure [Text Block] Fair value adjustments, net Fair Value Adjustments Net Fair value adjustments, net. Land Land February 20, 2026, Tranche 2 February 20, 2026, Tranche 2 [Member] February 20, 2026, Tranche 2 Fair Value as of Grant Date Award Grant Date Fair Value Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Entity Registrant Name Entity Registrant Name Other jurisdictions Other Countries [Member] Other countries. Event of default acceleration, threshold amount Debt Instrument, Event Of Default Acceleration, Threshold Percentage Debt Instrument, Event Of Default Acceleration, Threshold Percentage Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Schedule of Nonoperating Income (Expense) Schedule of Other Nonoperating Income (Expense) [Table Text Block] Contract With Customer, Liability [Axis] Contract With Customer, Liability [Axis] Contract With Customer, Liability Employee benefits and share-based compensation Employee Benefits and Share-Based Compensation Other obligations Interest Expense, Other Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Restricted stock Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Gold sales Gold [Member] Unrecognized stock-based compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Document Quarterly Report Document Quarterly Report Assets, fair value disclosure Assets, Fair Value Disclosure Fair value of long-term debt Long-Term Debt, Fair Value Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Performance shares units Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted Finance Lease, Right-of-Use Asset, before Accumulated Amortization Finance Lease, Right-of-Use Asset, before Accumulated Amortization Number of Operating Segments Number of Operating Segments Condensed Financial Information Disclosure [Abstract] Condensed Financial Information Disclosure [Abstract] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Income Tax, Examination [Table] Income Tax, Examination [Table] Grant date fair value of restricted stock Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Restatement Determination Date: Restatement Determination Date [Axis] Payments to acquire businesses, gross Payments to Acquire Businesses, Gross Reclamation Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Reclamation Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Reclamation Non-PEO NEO Non-PEO NEO [Member] Letters of credit outstanding, amount Letters of Credit Outstanding, Amount Silver delivery, threshold, ounces Asset Acquisition, Silver Delivery, Threshold, Ounces Asset Acquisition, Silver Delivery, Threshold, Ounces Schedule of Fair Value Adjustments to Comprehensive income (Loss) Schedule of Fair Value Adjustments to Comprehensive income (Loss) [Table Text Block] Schedule of Fair Value Adjustments to Comprehensive income (Loss) [Table Text Block] Other Proceeds from (Payment for) Other Financing Activity Interest Income, Other Interest Income, Other Debt instruments Interest Expense, Debt Sale of Stock [Axis] Sale of Stock [Axis] Name Trading Arrangement, Individual Name Schedule of Repurchase Agreements Schedule of Repurchase Agreements [Table Text Block] Equity Award [Domain] Award Type [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] Foreign exchange and other Other Noncash Income (Expense) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Other Income Other Income Canada CANADA Compensation Amount Outstanding Recovery Compensation Amount Debt instrument, face amount Debt Instrument, Face Amount Inventory and Ore on Leach Pads Inventory and Ore on Leach Pads Inventory and Ore on Leach Pads. Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Royalty settlement Litigation Settlement, Fee Expense Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Revenue Recognized Revenue Recognized Contract with Customer, Liability, Revenue Recognized Common shares issued (value) Business Combination, Consideration Transferred, Equity Interest MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name Weighted Average Number of Shares Outstanding Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Kensington Royalty Matter Kensington Royalty Matter [Member] Kensington Royalty Matter Derivative Instruments Settle in Years [Axis] Derivative Instruments Settle in Years [Axis] Derivative Instruments Settle In Years. 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Business Combination [Axis] Business Combination [Axis] Purchase price, increase, percentage of production, silver Asset Acquisition, Cash Purchase Price, Increase, Percentage Of Production, Silver Asset Acquisition, Cash Purchase Price, Increase, Percentage Of Production, Silver Entity Small Business Entity Small Business Revenue from External Customers by Geographic Areas Revenue from External Customers by Geographic Areas [Table Text Block] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Document Transition Report Document Transition Report Other Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent Total interest expense, net of capitalized interest Interest Costs Incurred Net Income (Loss) Attributable to Coeur Stockholders Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Product, Copper Product, Copper [Member] Product, Copper Kensington Kensington [Member] Kensington. Underlying Securities Award Underlying Securities Amount Long term debt and capital lease obligations Long Term Debt and Capital Lease Obligations [Table Text Block] Long term debt and capital lease obligations. Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Care and maintenance costs Care and maintenance costs Costs incurred related to a mine's care and maintenance activities. PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount INCOME AND MINING TAXES Income Tax Disclosure [Text Block] Risks and Uncertainties Risks and Uncertainties [Policy Text Block] Disclosure of accounting policy for risks and uncertainties that affects the financial statements. Diluted EPS Earnings Per Share, Diluted [Abstract] Total receivables Receivables, Total Receivables, Total Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Gold Concentrates Sales Agreements Gold Concentrates Sales Agreements [Member] Gold Concentrates Sales Agreements. 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Payment, tax withholding, share-based payment arrangement Payment, Tax Withholding, Share-Based Payment Arrangement NewGold NewGold [Member] NewGold Gold and copper swap contracts Gold And Copper Swap Contracts [Member] Gold And Copper Swap Contracts Accumulated Deficit Accumulated Deficit Accumulated Deficit [Member] Accumulated deficit. Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Derivative instruments, future settlement Schedule of Derivative Instruments [Table Text Block] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent CURRENT LIABILITIES Liabilities, Current [Abstract] Rochester Rochester [Member] Rochester. Geographical [Axis] Geographical [Axis] Total costs and expenses Operating Expenses Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Level 1 Fair Value, Inputs, Level 1 [Member] Revenue Business Combination, Pro Forma Information, Pro Forma Revenue Accounts payable Business Combination, Recognized Liability Assumed, Accounts Payable, Current Amount available subject to debt covenants Long-Term Debt, Amount Subject to Debt Covenants Long-Term Debt, Amount Subject to Debt Covenants Earnings Per Share, Diluted Earnings Per Share, Diluted Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Receivables Receivables, net current portion Accounts Receivable, after Allowance for Credit Loss, Current Title of 12(b) Security Title of 12(b) Security Interest Expenses Incurred for Various Debt Instruments [Table Text Block] Interest Expenses Incurred for Various Debt Instruments [Table Text Block] Interest expenses incurred for various debt instruments. Derivative Instruments Settle in Years [Domain] Derivative Instruments Settle in Years [Domain] Derivative Instruments Settle In Years. NET INCOME (LOSS) PER SHARE Earnings Per Share [Abstract] Earnings Per Share [Abstract] Consolidation Items [Domain] Consolidation Items [Domain] Accrued liabilities and other(1) Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued liabilities and other Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued Liabilities and Other Total other income (expense), net Nonoperating Income (Expense) NewGold Acquisition Replacement Shares NewGold Acquisition Replacement Shares [Member] NewGold Acquisition Replacement Shares Asset Retirement Obligation Asset Retirement Obligation [Table Text Block] Asset retirement obligation. Purchase price, percentage of production, gold Asset Acquisition, Cash Purchase Price, Percentage of Production, Gold Asset Acquisition, Cash Purchase Price, Percentage of Production, Gold Senior Notes Due Two Thousand Thirty Two Senior Notes Due Two Thousand Thirty Two [Member] Senior Notes Due Two Thousand Thirty Two Gross Profit Gross Profit Short-term Debt, Type [Axis] Short-Term Debt, Type [Axis] State Domestic Tax Jurisdiction [Member] Total number of shares purchased (in shares) Treasury Stock, Shares, Acquired Weighted average exercise price, options (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Common stock issued/canceled under long-term incentive plans, annual incentive plans, director fees and options, net (in shares) Stock Issued (Canceled), Shares, Share-Based Payment Arrangement Stock Issued (Canceled), Shares, Share-Based Payment Arrangement Award Timing Disclosures [Line Items] Inventories Schedule of Inventory, Current [Table Text Block] Long-term debt outstanding Long-Term Debt, Gross Debt Long-Term Debt And Lease Obligation, Net Long-Term Debt And Lease Obligation, Net PROPERTY, PLANT AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] Payments for settlements Payments for Legal Settlements U.S. Wage and Hour Matter U.S. Wage and Hour Matter [Member] U.S. Wage and Hour Matter Finance Lease, Right-Of-Use Asset, Accumulated Depreciation Finance Lease, Right-Of-Use Asset, Accumulated Depreciation Finance Lease, Right-Of-Use Asset, Accumulated Depreciation Additions Deferred Revenue, Additions Other Reportable Geographical Components [Member] NET INCOME (LOSS) Net income Net Income (Loss) Attributable to Parent Fair value adjustments, net, pretax Fair value adjustments, net, pretax Fair value adjustments, net Gain (Loss) on Derivative Instruments, Net, Pretax Expiration Date Trading Arrangement Expiration Date Ore on Leach Pad Ore on Leach Pad [Policy Text Block] Ore on Leach Pad [Policy Text Block] NON-CURRENT LIABILITIES Liabilities, Noncurrent [Abstract] Other Commitments [Domain] Other Commitments [Domain] Accrued operating costs Other Accrued Liabilities, Current Property, plant and equipment and mining properties, net Property, plant and equipment and mining properties, net Property, Plant and Equipment, Net Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Adoption Date Trading Arrangement Adoption Date Base Rate Base Rate [Member] Shares issued (in dollars per share) Shares Issued, Price Per Share Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Entity Current Reporting Status Entity Current Reporting Status Receivables [Abstract] Receivables [Abstract] Derivative [Line Items] Derivative [Line Items] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Income from operations Income from operations Operating Income (Loss) Consolidated Entities [Domain] Consolidated Entities [Domain] Line of Credit Line of Credit [Member] Long-term stockpile Long-Term Inventory Stockpile Value of inventory stockpile classified as long-term. Accumulated deficit Retained Earnings (Accumulated Deficit) Adjustments: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Executive Category: Executive Category [Axis] Gold delivered, ounces Asset Acquisition, Gold Delivered, Ounces Asset Acquisition, Gold Delivered, Ounces Other Operating Income (Expense), Net Other Operating Income (Expense), Net Proceeds from issuance of long-term debt Proceeds from Issuance of Long-Term Debt Current Fiscal Year End Date Current Fiscal Year End Date Subsequent Event Type [Domain] Subsequent Event Type [Domain] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Silvertip Silvertip [Member] Silvertip [Member] Receivables Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Other, net Other, net Other Nonoperating Income (Expense) Statement [Table] Statement [Table] Derivative liability Derivative Liability Deferred income taxes Deferred Income Tax Expense (Benefit) Gold Concentrates Swap Contracts Gold Concentrates Swap Contracts [Member] Gold Concentrates Swap Contracts CASH FLOWS FROM FINANCING ACTIVITIES: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Daily Simple Secured Overnight Financing Rate (SOFR) Daily Simple Secured Overnight Financing Rate (SOFR) [Member] Daily Simple Secured Overnight Financing Rate (SOFR) Common stock issued/canceled under long-term incentive plans, annual incentive plans, director fees and options, net Stock Issued (Canceled), Value, Share-Based Payment Arrangement Stock Issued (Canceled), Value, Share-Based Payment Arrangement Net assets acquired Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill Beginning balance (in shares) Ending balance (in shares) Shares, Issued Receivable Accounts Receivable, after Allowance for Credit Loss [Abstract] SilverCrest SilverCrest [Member] SilverCrest Opening Balance Closing Balance Contract with Customer, Liability Variable Rate [Domain] Variable Rate [Domain] Financial assets and liabilities measured at fair value on recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Stock issued during period, acquisitions Stock Issued During Period, Value, Acquisitions Unrecognized tax benefits Unrecognized Tax Benefits Proceeds from debt issuance Proceeds from Debt, Net of Issuance Costs Number of antidilutive shares of common stock equivalents Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount All Adjustments to Compensation All Adjustments to Compensation [Member] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Amendment Flag Amendment Flag Provisional metal sales contracts Provisional Metal Sales Contracts [Member] Provisional Metal Sales Contracts Termination Date Trading Arrangement Termination Date CASH PROVIDED (USED IN) BY FINANCING ACTIVITIES Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Gold delivery, threshold ounces Asset Acquisition, Gold Delivery, Threshold, Ounces Asset Acquisition, Gold Delivery, Threshold, Ounces Earnings Per Share (Textual) [Abstract] Earnings Per Share (Textual) [Abstract] Earnings per share. Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Foreign exchange gain (loss) Realized Gain (Loss), Foreign Currency Transaction, before Tax Total assets for reportable segments Net Assets Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Income-tax related interest and penalties Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic Approximate dollar value of shares that may yet be purchased under the Program Share Repurchase Program, Remaining Authorized, Amount Cash Flow, Supplemental Disclosures [Text Block] Cash Flow, Supplemental Disclosures [Text Block] Costs applicable to sales Cost of Product and Service Sold Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Silver sales Product, Silver [Member] Product, Silver [Member] Segment Reporting [Abstract] Segment Reporting [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Royalty Settlement [Domain] Royalty Settlement [Domain] Royalty Settlement Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Amortization of debt issuance costs Amortization of Debt Issuance Costs OTHER INCOME (EXPENSE), NET Nonoperating Income (Expense) [Abstract] Entity Tax Identification Number Entity Tax Identification Number Asset Acquisition [Axis] Asset Acquisition [Axis] Debt Instrument, Covenant, Variable Rate [Domain] Debt Instrument, Covenant, Variable Rate [Domain] Debt Instrument, Covenant, Variable Rate [Domain] Debt instrument, unamortized discount Debt Instrument, Unamortized Discount Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Consolidated Entities [Axis] Consolidated Entities [Axis] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (in dollars per share) Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Flow-through shares Flow-through shares Flow-through shares Common stock, shares issued (in shares) Common Stock, Shares, Issued Wharf Wharf [Member] Wharf [Member] Metal sales Product, Metal [Member] Product, Metal [Member] Use of Estimates, Policy Use of Estimates, Policy [Policy Text Block] Entity Public Float Entity Public Float Construction in Progress, Gross Construction in Progress, Gross Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Insider Trading Arrangements [Line Items] Copper Concentrates Swap Contracts Copper Concentrates Swap Contracts [Member] Copper Concentrates Swap Contracts Security Exchange Name Security Exchange Name Other Mining Properties Other Mining Properties [Member] Other Mining Properties. Non-current liabilities Non-current liabilities Liabilities, Noncurrent Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Other tax receivable Other tax receivable Other noncurrent amounts tax receivable owed not attributable to income taxes. Receivables - current portion Accounts Receivable, after Allowance for Credit Loss, Current [Abstract] Increase (decrease) income tax expense Effective Income Tax Rate Reconciliation, Tax Contingency, Foreign, Amount Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] COSTS AND EXPENSES Operating Expenses [Abstract] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Accrued liabilities and other Accrued liabilities and other Other Liabilities, Current Production to be sold, percent Life of Mine Production, Percentage Life of Mine Production, Percentage Common stock issued Stock Issued During Period, Value, New Issues Statement [Line Items] Statement [Line Items] Non-guarantor intercompany liabilities Non-Guarantor Intercompany Liabilities Non-Guarantor Intercompany Liabilities Variable Rate [Axis] Variable Rate [Axis] Consolidation Items [Axis] Consolidation Items [Axis] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Accounts receivable - trade Accounts Receivable Trade Accounts receivable trade. Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Counterparty Name [Axis] Counterparty Name [Axis] Common Stock Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Subsidiary, Sale of Stock [Line Items] Subsidiary, Sale of Stock [Line Items] INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Mining Concessions Purchase Agreement Member Mining Concessions Purchase Agreement Member [Member] Mining Concessions Purchase Agreement Member Mexico MEXICO