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Unrecorded Unconditional Purchase Obligations Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract] Defined Contribution Plan [Table] Defined Contribution Plan [Table] Operating cash flows from finance leases Finance Lease, Interest Payment on Liability Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Ownership [Domain] Ownership [Domain] Weighted average discount rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Airline Destination [Table] Airline Destination [Table] International Companies Non-U.S. International Companies [Member] International Companies [Member] Prepaid Expenses and Other Current Assets Prepaid Expenses and Other Current Assets [Member] 2014 Credit  Facilities Credit Facility 2014 [Member] Credit Facility 2014 [Member] PSP1 Promissory Note Payroll Support Program Promissory Note One, CARES Act [Member] Payroll Support Program Promissory Note One, CARES Act Statutory income tax provision (benefit) Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Operating lease commitments that have not yet commenced, number of aircraft Lessee, Operating Lease, Lease Not yet Commenced, Number Of Leased Aircraft Lessee, Operating Lease, Lease Not yet Commenced, Number Of Leased Aircraft AAdvantage Term Loan Facility AAdvantage Term Loan Facility [Member] AAdvantage Term Loan Facility Balance at Beginning of Year Balance at End of Year SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Equity component of convertible debt issued, net of tax and offering costs Adjustments to additional paid in capital, net of tax Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Net Of Tax And Offering Costs Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Net Of Tax And Offering Costs Name of Property [Domain] Name of Property [Domain] Aircraft Fuel, Spare Parts, and Supplies, Net Inventory, Policy [Policy Text Block] 2027 and thereafter Unrecorded Unconditional Purchase Obligation, to be Paid, after Year Five Foreign Current Foreign Tax Expense (Benefit) Cash paid for amounts included in the measurement of lease liabilities: Cash Flow, Lessee [Abstract] Cash Flow, Lessee [Abstract] Pension Benefits Pension Plan Pension Plan [Member] Construction project, expected cost, funded by special facility revenue bond Construction Project, Expected Cost, Funded By Special Facility Revenue Bond Construction Project, Expected Cost, Funded By Special Facility Revenue Bond Property and equipment, at cost Finance Lease, Right-of-Use Asset, before Accumulated Amortization Residual value percentage of equipment and properties Property, Plant and Equipment, Salvage Value, Percentage 2013 Credit  Facilities Credit Facility 2013 [Member] Credit Facility 2013 [Member] Reduction of debt discount Debt Instrument, Unamortized Discount Settlement of single-dip unsecured claims held in DCR and retirement of 259,878 shares of AAG common stock Adjustments To Additional Paid In Capital Settlement Of Single Dip Unsecured Claims And Retirement Of Common Stock Adjustments To Additional Paid In Capital Settlement Of Single Dip Unsecured Claims And Retirement Of Common Stock Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Number of days within the occurrence of triggering event Debt Instrument, Prepayment Trigger, Number Of Days Within The Occurrence Of Triggering Event Debt Instrument, Prepayment Trigger, Number Of Days Within The Occurrence Of Triggering Event Debt Instrument, Periodic Payment Debt Instrument, Periodic Payment Accounting Standards Update 2020-06 [Member]