Cybersecurity Risk Management Strategy And Governance [Abstract] Cybersecurity Risk Management Processes For Assessing Identifying And Managing Threats [Text Block] Cybersecurity Risk Management Processes Integrated Flag Cybersecurity Risk Management Processes Integrated [Text Block] Cybersecurity Risk Management Third Party Engaged Flag Cybersecurity Risk Third Party Oversight And Identification Processes Flag Cybersecurity Risk Materially Affected Or Reasonably Likely To Materially Affect Registrant Flag Cybersecurity Risk Materially Affected Or Reasonably Likely To Materially Affect Registrant [Text Block] Cybersecurity Risk Board Of Directors Oversight [Text Block] Cybersecurity Risk Board Committee Or Subcommittee Responsible For Oversight [Text Block] Cybersecurity Risk Process For Informing Board Committee Or Subcommittee Responsible For Oversight [Text Block] Cybersecurity Risk Role Of Management [Text Block] Cybersecurity Risk Management Positions Or Committees Responsible Flag Cybersecurity Risk Management Positions Or Committees Responsible [Text Block] Cybersecurity Risk Management Expertise Of Management Responsible [Text Block] Cybersecurity Risk Process For Informing Management Or Committees Responsible [Text Block] Cybersecurity Risk Management Positions Or Committees Responsible Report To Board Flag Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accrued Expenses and Other Current Liabilities Accounts receivable, net Accounts Receivable, Net, Current Trade receivables, net Trade receivables, net Accumulated other comprehensive income, beginning of period Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income, end of period Accumulated other comprehensive losses Less accumulated depreciation, depletion and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated depreciation Acquisition of Curragh, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Additional paid-in capital Additional Paid in Capital, Common Stock Adjustment For Amortization Amortization for the liability Unrealized Gain Loss On Derivatives Unrealized gain on derivative Allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current Provision for discounting and credit losses (Note 7) AmortizationOfFinancingCosts Amortization of deferred financing costs Asset Impairment Charges Impairment of Assets Impairment of non-core assets Total Impairment of assets Impairment of assets Asset retirement obligations, excluding current portion Asset Retirement Obligation Total asset retirement obligations at beginning of the year Total asset retirement obligations at end of the year Total asset retirement obligations Asset Retirement Obligation Asset [Member] Asset Retirement Obligation Current Asset retirement obligations Less current portion Asset Retirement Obligation Disclosure [Text Block] Asset Retirement Obligations Asset retirement obligation expenses Asset Retirement Obligation, Accretion Expense Accretion Asset Retirement Obligation, Legally Restricted Assets, Fair Value Asset retirement obligation, legally restricted assets Asset Retirement Obligation, Liabilities Incurred ARO liability additions - 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including related party receivables, net Increase (Decrease) in Accounts Receivable Change in estimate of asset retirement obligation Increase (Decrease) in Asset Retirement Obligations Reclamation of asset retirement obligations Valuation Allowance Deferred Tax Asset Change In Amount Increase in valuation allowance Increase (Decrease) in Income Taxes Payable Income tax payable Inventories Increase (Decrease) in Inventories Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Increase Decrease In Accounts Payable Accounts payable Increase Decrease In Accrued Liabilities Accrued expenses and other current liabilities Cash Collateral for Borrowed Securities Cash Collateral Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Common stock $0.01 par value; 1,000,000,000 shares authorized, 167,645,373 shares issued and outstanding as of December 31, 2025 and December 31, 2024 Common Stock, Value, Issued Comprehensive Income Net Of Tax Total comprehensive (loss) income attributable to Coronado Global Resources Inc. 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[Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Dividends Members' distributions/Dividends paid Dividends Income Tax Authority [Domain] Income Tax Authority [Domain] Reportable segment results Segment Reporting Information, Operating Income (Loss) [Abstract] Share-based Payment Arrangement [Text Block] Stock-Based Compensation Statement [Table] Statement [Table] Assets Assets [Abstract] Statement [Line Items] Statement [Line Items] Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Inventory, Noncurrent, Fair Value Disclosure Coal inventories measured at its net realizable value Operating leases: Leases, Operating [Abstract] Capital Structure [Abstract] Other Comprehensive Income [Abstract] Earnings per share of common stock Summary of Activity Related to Contingent Royalty Liability and Value Share 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Stockholders' Equity Attributable to Parent Coronado Global Resources Inc. stockholders' equity Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance Valuation allowance Deferred Tax Liabilities Property Plant And Equipment Property, plant, equipment and mine development, principally due to differences in depreciation, depletion and asset impairments Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax Gain (loss) on long-term intra-entity foreign currency transactions Income tax expense Income Tax Expense (Benefit) Income tax (benefit) expense Income tax benefit Total income tax benefit Income tax benefit (expense) Foreign Currency Transaction Gain Loss Before Tax Other foreign exchange (gains) losses Other foreign exchange gains (losses) Aggregate impact of foreign currency transaction gain (loss) InterestCostsCapitalized Interest capitalized Other income (expenses): Other income (expenses): Other, net [Abstract] Series A Preferred stock $0.01 par value; 100,000,000 shares authorized, 1 Share issued and outstanding as of December 31, 2025 and December 31, 2024 Preferred Stock, Value, Issued Derivatives and Fair Value Measurement [Abstract] Accumulated Other Comprehensive Losses [Abstract] Accumulated Other Comprehensive Loss [Abstract] Earnings per share of common stock Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Acquisition of noncontrolling interest Acquisition of non-controlling interest Guarantee Obligations [Member] Accounts Receivable [Member] Accounts Receivable [Member] Trade receivables [Member] Equity Components [Axis] Equity Components [Axis] Additional Paid in Capital [Member] Additional Paid-in Capital [Member] (Accumulated losses) Retained Earnings [Member] Retained Earnings [Member] Retained earnings Accumulated Other Comprehensive Losses [Member] AOCI Attributable to Parent [Member] Foreign Currency Translation Adjustments [Member] 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and debt issuance costs Deferred Finance Costs Gross Segments [Axis] Segments [Axis] Segments [Axis] Dividends Payable, Date of Record Costs And Expenses Total costs and expenses EarningsPerShareProFormaAbstract Pro Forma earnings per share of common stock Pro forma Earnings Per Share (US$): Deposits Assets Current Short-term deposits Deposits Assets Deposits to acquire long lead mining equipment Net (loss) income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net (loss) income attributable to Coronado Global Resources Inc. Net (loss) income attributable to Coronado Global Resources Inc. 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Percentage of awards for which vesting rate is calculated using the same measurement Return Of Capital Per Share Return of capital (per share) New Investors [Member] Pro Forma Income Tax Expense (Benefit) Pro Forma Income Tax Expense (Benefit) Pro forma income tax expense Pro Forma Net Income (Loss) Pro Forma Net Income (Loss) Pro Forma net income attributable to Company stockholders Brokered Sales [Member] Brokered Sales [Member] Long Service Leave Receivable, Current Long Service Leave Receivable, Current Long service leave receivable Deferred Costs, Leasing, Accumulated Amortization Noncurrent Deferred Costs, Leasing, Accumulated Amortization Noncurrent Deferred debt issue costs Long Service Leave Receivable, Noncurrent Long service leave receivable Long Service Leave Receivable, Noncurrent Non-Executive Director [Member] Executive Officer [Member] Return Of Stockholders Capital, Amount Per Share Return Of Stockholders Capital, Amount Per Share Return of capital, Amount per share EMG Group [Member] Depreciation and amortization expense Depreciation And Depletion Depreciation and depletion Percentage Of Pro Rata Shares Owned Percentage Of Pro Rata Shares Owned Percent of pro rata shares owned Favorable Mineral Leases, Noncurrent Favorable mineral leases Favorable Mineral Leases, Noncurrent Distribution Made To Limited Liability Company L L C Member, Distribution Members' distributions before Reorganization transactions Distribution Made To Limited Liability Company L L C Member, Distribution Current lease obligations Lease liabilities Present value of lessee's discounted obligation for lease payments from leases, classified as current. Non-current lease obligations Lease liabilities Present value of lessee's discounted obligation for lease payments from leases, classified as non-current. Buchanan And Logan [Member] Buchanan And Logan Segment 100%-owned producing mine complexes (Buchanan and Logan) [Member] Australia Segment [Member] United States Segment [Member] Placement [Member] Retail Entitlement Offer [Member] Placement And Retailment Entitlement Offer [Member] Operating Lease, Right-of-Use Asset, Amount Derecognized Right of use assets derecognized Operating Lease, Right-of-Use Asset, Amount Derecognized Operating Lease, Liability, Amount Derecognized Operating Lease, Liability, Amount Derecognized Lease liabilities derecognized Debt Instrument, Credit Reduction Debt Instrument, Credit Reduction Cost reduction Schedule of Share-based Payment Award, Performance Shares, Valuation Assumptions [Table Text Block] Schedule of Share-based Payment Award, Performance Shares, Valuation Assumptions Schedule Of Fair Value Assumptions For Performance Shares Share-based Compensation Arrangements by Share-based Payment Award, Grants in Period, Grant Date Intrinsic Value, Outstanding [Table Text Block] Share-based Compensation Arrangements by Share-based Payment Award, Grants in Period, Grant Date Intrinsic Value, Outstanding Summary of Awards Granted Twenty Nineteen Short Term Incentive Plan [Member] 2019 STI Plan [Member] Non-Executive Director Plan [Member] Summary Of Performance Metrics [Table Text Block] Summary Of Performance Metrics Summary of Performance Metrics Awarded In 2020 [Member] Grant 2020 [Member] Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Performance period Scorecard Awards [Member] Total Shareholder Return [Member] Safety [Member] Cashflow [Member] Production [Member] Relative Total Shareholder Return [Member] Relative TSR [Member] Production Costs [Member] Gain (Loss) On Operating Lease Derecognition Gain (Loss) On Operating Lease Derecognition Gain on operating lease derecognition Stanwell Rebate [Policy Text Block] Stanwell Rebate Stanwell Rebate Gain (Loss) On Idled Assets Held For Sale Gain (Loss) On Idled Assets Held For Sale Gains (losses) on idled assets Asset Retirement Obligation, Liability Reclassified To Liabilities Held For Sale Asset Retirement Obligation, Liability Reclassified To Liabilities Held For Sale Reclass of asset held for sale Cash Collateral [Member] Accruals For Capital Expenditures Accruals for capital expenditures Net movement in accruals for capital expenditures Property, Plant and Equipment, Impairment of Long-Lived Assets and Goodwill [Policy Text Block] Property, Plant and Equipment, Impairment of Long-Lived Assets and Goodwill [Policy Text Block] Property, Plant and Equipment, Impairment of Long-Lived Assets and Goodwill Effective Income Tax Rate Reconciliation, Foreign Income Tax Deductions And Amendments Effective Income Tax Rate Reconciliation, Foreign Income Tax Deductions And Amendments Foreign tax deductions method change and prior year amendments Accounts Receivable, Related Parties, Past Due Accounts Receivable, Related Parties, Past Past due Accounts Receivable, Related Parties,Secured By A Letter Of Credit Accounts Receivable, Related Parties,Backed By A Letter Of Credit Due from related party, backed by a letter of credit Labor [Member] Member's Capital,Retained Earnings [Member] Allowance For Credit Loss, Non-Related Party Allowance For Credit Loss, Non-Related Party Credit losses allowance (non-related party) Entitlement Of Shares Entitlement Of Shares Entitlement of shares Shares Granted, Consideration Shares granted under consideration Shares Granted, Consideration Payment for capital acquired in prior period Payment for capital acquired in prior period Payment for capital acquired in prior period Employment enhancement tax credit, current Tax credits receivable Employment enhancement tax credit, current, receivable Employment enhancement tax credit, noncurrent Employment enhancement tax credit, noncurrent Tax credits receivable West Virginia Tax [Member] West Virginia Tax ABL facility [Member] ABL facility. Awarded in 2021 [Member] Grant 2021 [Member] Awarded in 2021. Reconciliation Of Allowance For Credit Losses Schedule Of Credit Losses [Table Text Block] Schedule of Credit Losses Final Maturity Debt Instrument, Final Maturity Debt Instrument, Final Maturity Senior Secured Notes [Member] 10.750% Senior Secured Notes [Member] Receivable related to employment enhancement tax credit Receivable related to employment enhancement tax credit Employment enhancement tax credit excess rate Employment enhancement tax credit excess of the state tax liability, rate Total lease obligations Operating And Finance Lease Obligations Operating And Finance Lease Obligations Total lease liability Debt Instrument, Redemption, Change of Control. 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Maximum Percentage of Note Redemption of Principal Amount Maximum Percentage of Note Redemption of Principal Amount Maximum Percentage of Note Redemption of Original Principal Amount Maximum Percentage of Note Redemption of Original Principal Amount Minimum percentage of aggregate principal amount of outstanding notes to accelerate in the event of default Minimum percentage of aggregate principal amount of outstanding notes to accelerate in the event of default. Customer balances individually represented 10% or more [Member] Customer balances individually represented 10% or more Adjustments To Additional Paid In Capital, Share-based Payment Arrangement, Decrease for Cost Recognition Value Stoke-based compensation for equity classified awards Amount of decrease to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement. 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Assets held for sale Favorable sales contracts Favorable sales contracts Stamp Duty On Curragh Acquisition [Member] Stamp Duty On Curragh Acquisition Unpaid Tax Interest [Member] Unpaid Tax Interest Acquisition Related Accruals [Member] Acquisition Related Accruals Accrued Expenses and Other Current Liabilities [Member] Vesting Date 31/03/2026 [Member] Vesting Date 31/03/2026 Vesting Date 31/03/2025 [Member] Vesting Date 31/03/2025 Vesting Date 31/03/2024 [Member] Vesting Date 31/03/2024 Grant 2022 [Member] Grant 2022 Unfranked Ordinary Dividend [Member] Unfranked Ordinary Dividend Deferred Financing Costs [Policy Text Block] Deferred Financing Costs Policy Deferred Debt Issuance Costs Development properties (Mon Valley and Russell County) [Member] Mon Valley and Russell County Coronado Global Resources Inc [Member] Coronado Global Resources Inc. Company [Member] Advance payment to acquire long lead capital items Net movement in deposits to acquire long lead capital items Advance payment to acquire long lead capital items Minimum tax inflation reduction act - custom element Minimum tax inflation reduction act - custom element Effective Income Tax Rate Reconciliation, Deductible Expense, Depletion, Amount Percentage depletion Effective Income Tax Rate Reconciliation, Deductible Expense, Depletion, Amount Mining Equipment [Member] Deposits To Acquire Capital Items, Current Deposits To Acquire Capital Items, Current Deposits to acquire mining equipment New ABL Facility [Member] ABL Facility [Member] Debt Instrument Leverage Ratio Leverage ratio Debt Instrument Leverage Ratio Debt Instrument, Interest Coverage Leverage Ratio Debt Instrument, Interest Coverage Leverage Ratio Interest coverage leverage ratio Debt Instrument, Review Event Period Debt Instrument, Review Event Period Review event period Debt Instrument, Bank Guarantees 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Duty, Additional Amount Accrued Assessed Stamp Duty, Additional Amount Accrued Assessed stamp duty, additional amount accrued Income Tax Reconciliation, Uncertain Tax Positions Income Tax Reconciliation, Uncertain Tax Positions Changes in unrecognized tax benefits Deferred Tax Asset, Lease Obligations Deferred Tax Asset, Lease Obligations Lease obligations Deferred Tax Liabilities, Right Of Use Asset Deferred Tax Liabilities, Right Of Use Asset Right of use asset Non Australian Tax Consolidated Group [Member] Stamp Duty Payable, Partial Payments Stamp Duty Payable, Partial Payments Stamp duty payable, partial payments Stamp Duty Payable, Total Liabilities Stamp Duty Payable, Total Liabilities Stamp duty payable, total liabilities Current And Non-Current Lease Liabilities [Member] Number Of Customers Number Of Customers Number of customers Mining Costs Mining Costs Mining costs Other And Unallocated Items Other And Unallocated Items Other and unallocated items Termination Fee Revenue Termination Fee Revenue Termination fee revenue Number Of Extinguished Mining Services Contracts Number Of Extinguished Mining Services Contracts Number of extinguished mining services contracts Operating Lease, Number Of Modified Leases Contracts Operating Lease, Number Of Modified Leases Contracts Operating lease, number of modified leases contracts Operating Lease Liabilities Amount Modified Operating Lease Liabilities Amount Modified Operating lease liabilities amount modified Operating Lease Right Of Use Asset Amount Modified Operating Lease Right Of Use Asset Amount Modified Operating lease right of use asset amount modified Modified Mining Equipment Lease Contracts [Member] 9.250% Senior Secured Notes [Member] Senior Secured Notes Due 2029 [Member] Loan Curragh Housing Transaction [Member] Curragh Housing Transaction [Member] Debt Instrument, Percent Of Redeemed Outstanding Amount, From Change Of Control Scenario Debt Instrument, Percent Of Redeemed Outstanding Amount, From 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2024 [Member] Gain On Translation Of Short-Term Inter-Entity Balances Gain On Translation Of Short-Term Inter-Entity Balances Loss (gain) on translation of short-term inter-entity balances Customer Payment Due After Invoicing, Term Customer Payment Due After Invoicing, Term Customer payment due after invoicing, term JFE Steel [Member] Lessee Operating Lease Lease Not Yet Commenced Term Of Contract, Expected Start Period Lessee Operating Lease Lease Not Yet Commenced Term Of Contract, Expected Start Period Lease not yet commenced term of contract, expected start period Debt Agreement, Required Aggregate Cash Balance Debt Agreement, Required Aggregate Cash Balance Debt agreement, required aggregate cash balance Grant 2024 And 2023 [Member] Deferred Tax Asset Denied Interest Carryforward Deferred Tax Asset Denied Interest Carryforward Denied interest Carried forward Bi-annual fully franked fixed ordinary dividend [Member] Bi-annual fully franked fixed ordinary dividend O 2025 Q1 Dividends 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Lapse In Statute Reductions for tax positions of prior year (including impacts due to lapse in statute) Reductions for tax positions of prior year (including impacts due to lapse in statute) Available Liquidity Available Liquidity Available liquidity Surety Amount Required For Estimated Rehabilitation Cost Surety Amount Required For Estimated Rehabilitation Cost Surety amount required for estimated rehabilitation cost Percent Of Contribution Payable Of Estimated Rehabilitation Cost Percent Of Contribution Payable Of Estimated Rehabilitation Cost Percent of contribution payable of estimated rehabilitation cost Other Financing Costs Other Financing Costs Other Russell County Development Property [Member] Greenbrier Idle Asset [Member] Other Financing Costs, Other Net Other Financing Costs, Other Net Other financing costs Gain (Loss) On Disposal Of Idled Assets Gain (Loss) On Disposal Of Idled Assets Gain on sale of assets Finance Lease Liability Incurred During Period Finance Lease 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Default Percent Of Acceleration In Event Of Default Percent of acceleration in event of default Minimum Threshold For Review Events Minimum Threshold For Review Events Minimum threshold for review events Income Tax Paid Refund During The Year Income Tax Paid Refund During The Year Income tax paid refund during the year Effective Income Tax Reconciliation Foreign Exchange Permanent Differences Effective Income Tax Reconciliation Foreign Exchange Permanent Differences Foreign exchange permanent differences, percent Income Tax Reconciliation, U.S. Impact Of Branch Income Percent Income Tax Reconciliation, U.S. Impact Of Branch Income Percent U.S. impact of branch income at 3.4% Effective Income Tax Reconciliation, U.S. Impact Of Branch Income Percent Effective Income Tax Reconciliation, U.S. Impact Of Branch Income Percent U.S. impact of branch income at 3.4%, percent Effective Income Tax Rate Reconciliation Uncertain Tax Positions Percent Effective Income Tax Rate Reconciliation Uncertain Tax Positions Percent Changes in unrecognized tax benefits, percent Income Tax Rate Reconciliation, Changes In Valuation Allowance Income Tax Rate Reconciliation, Changes In Valuation Allowance Changes in valuation allowance Effective Income Tax Rate Reconciliation, Changes In Valuation Allowance Effective Income Tax Rate Reconciliation, Changes In Valuation Allowance Changes in valuation allowance, percent Income Taxes, Percent Of US Impact Of Branch Income Income Taxes, Percent Of US Impact Of Branch Income Percent of US impact of branch income Agreement Amendment Cash Balance Benchmark For Waiver Of Rebate Amounts Agreement Amendment Cash Balance Benchmark For Waiver Of Rebate Amounts Agreement amendment cash balance benchmark for waiver of rebate amounts Percent Of Total Estimated Rehabilitation Cost Not Required Due To Financial Provisioning Scheme Percent Percent Of Total Estimated Rehabilitation Cost Not Required Due To Financial Provisioning Scheme Percent Percent of total ERC not required due to Financial Provisioning Scheme percent