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Notes Aircraft Financings [Member] Aircraft Financings [Member] Company Selected Measure Amount Company Selected Measure Amount Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization LATAM LATAM [Member] LATAM 2030 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Four Cash sales of mileage credits Sales Of Mileage Credits Sales Of Mileage Credits A321-200neo A321-200neo [Member] A321-200neo [Member] Current Assets: Current assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Sales to airline segment Sales to Airline Segment [Member] Sales to airline segment [Member] Income Tax Provision Income Tax Expense (Benefit) Refinery cost of goods sold Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] Loyalty program activity Loyalty Program Liability Activity [Roll Forward] Loyalty Program Liability Activity Net Increase in Cash, Cash Equivalents and Restricted Cash Equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Other Product and Service, Other [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Recognized net actuarial loss Defined Benefit Plan, Amortization of Gain (Loss) Aircraft fuel and related taxes Aircraft fuel and related costs Fuel Costs AOCI Attributable to Parent, Net of Tax AOCI Attributable to Parent, Net of Tax [Roll Forward] Net Income Net income (loss) Net income Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Restricted cash equivalents Restricted Investments, at Fair Value Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Schedule of Components of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Activity in Loyalty Program Deferred Revenue Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Proceeds from short-term obligations Proceeds from Short-Term Debt B-737-10 B-737-10 [Member] B-737-10 Operating Revenue: Revenues [Abstract] Six months ending December 31, 2026 Unrecorded Unconditional Purchase Obligation, to be Paid, Remainder of Fiscal Year Non-Cash Transactions: Other Noncash Investing and Financing Items [Abstract] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]