Commitments, Contingencies and Guarantees - Additional Information (Details)	1 Months Ended		12 Months Ended
	Jan. 31, 2024	Aug. 31, 2023	Dec. 31, 2023 USD ($) employee engine aircraft	Feb. 28, 2023 lawsuit	Dec. 31, 2022 USD ($)	Dec. 07, 2022 plaintiff	Dec. 31, 2018 USD ($) lane
Long-term Purchase Commitment [Line Items]
Airport redevelopment, number of security screening lanes | lane							10
Number of aircraft owned through financing under EETCs | aircraft			308
Number of spare aircraft engines owned through financing under EETCs | engine			60
Long-term debt			$ 32,759,000,000		$ 35,289,000,000
Letters of credit outstanding and surety bonds, amount			318,000,000
Operating lease liabilities			$ 7,761,000,000		8,024,000,000
Number of full-time equivalent employees | employee			132,100
Allied Pilots Association
Long-term Purchase Commitment [Line Items]
Collective bargaining agreement, term		4 years
Collective bargaining agreement, initial rate increase, percent		21.00%
Collective bargaining agreement, one-time payment			$ 754,000,000
Adjustments to other benefit-related items			$ 235,000,000
Workforce Subject to Collective-Bargaining Arrangements | Unionized Employees Concentration Risk
Long-term Purchase Commitment [Line Items]
Percentage of employees covered by collective bargaining agreements with various labor unions			87.00%
Workforce Subject to Collective-Bargaining Arrangements Expiring within One Year | Unionized Employees Concentration Risk
Long-term Purchase Commitment [Line Items]
Percentage of employees covered by collective bargaining agreements with various labor unions			34.00%
Subsequent Event | CWA-IBT
Long-term Purchase Commitment [Line Items]
Collective bargaining agreement, term	5 years
Private Party Antitrust Actions Related to the Northeast Alliance
Long-term Purchase Commitment [Line Items]
Number of private party plaintiffs who filed putative class action | plaintiff						2
Number of additional putative class action lawsuits | lawsuit				2
Restricted Cash
Long-term Purchase Commitment [Line Items]
Letters of credit outstanding and surety bonds, amount			$ 94,000,000
Leasehold Improvements | LAX Modernization Project
Long-term Purchase Commitment [Line Items]
Airport development, amount							$ 1,600,000,000
Airport redevelopment, costs incurred and capitalized			862,000,000
Airport redevelopment cost incurred in current year			283,000,000
Non-proprietary improvements sold and transferred			346,000,000
Non-proprietary improvements sold and transferred in current period			170,000,000
Proceeds for non-proprietary improvements not yet ready for use			$ 53,000,000
Regional Carrier
Long-term Purchase Commitment [Line Items]
Number of full-time equivalent employees | employee			28,900
Special Facility Revenue Bonds
Long-term Purchase Commitment [Line Items]
Guarantor obligations, maximum exposure, undiscounted			$ 520,000,000
Operating lease liabilities			321,000,000
Secured Debt
Long-term Purchase Commitment [Line Items]
Long-term debt			27,526,000,000		30,043,000,000
Guarantor obligations, maximum exposure, undiscounted			17,500,000,000
Unsecured Debt
Long-term Purchase Commitment [Line Items]
Long-term debt			5,233,000,000		5,246,000,000
Enhanced Equipment Trust Certificates (EETC) | Secured Debt
Long-term Purchase Commitment [Line Items]
Long-term debt			7,657,000,000		9,175,000,000
Special Facility Revenue Bonds | Secured Debt
Long-term Purchase Commitment [Line Items]
Long-term debt			967,000,000		1,050,000,000
PSP1 Promissory Note | Unsecured Debt
Long-term Purchase Commitment [Line Items]
Long-term debt			1,757,000,000		1,757,000,000
Senior Notes 3.75% Matures 2025 | Unsecured Debt
Long-term Purchase Commitment [Line Items]
Long-term debt			$ 487,000,000		500,000,000
Fixed interest rate per annum			3.75%
Convertible Senior Notes 6.50% Due 2025 | Unsecured Debt
Long-term Purchase Commitment [Line Items]
Long-term debt			$ 1,000,000,000		1,000,000,000
Fixed interest rate per annum			6.50%
American Airlines, Inc.
Long-term Purchase Commitment [Line Items]
Airport redevelopment, number of security screening lanes | lane							10
Number of aircraft owned through financing under EETCs | aircraft			308
Number of spare aircraft engines owned through financing under EETCs | engine			60
Long-term debt			$ 27,526,000,000
Letters of credit outstanding and surety bonds, amount			318,000,000
Operating lease liabilities			$ 7,708,000,000		7,961,000,000
Number of full-time equivalent employees | employee			103,200
American Airlines, Inc. | Allied Pilots Association
Long-term Purchase Commitment [Line Items]
Collective bargaining agreement, term		4 years
Collective bargaining agreement, initial rate increase, percent		21.00%
Collective bargaining agreement, one-time payment			$ 754,000,000
Adjustments to other benefit-related items			$ 235,000,000
American Airlines, Inc. | Workforce Subject to Collective-Bargaining Arrangements | Unionized Employees Concentration Risk
Long-term Purchase Commitment [Line Items]
Percentage of employees covered by collective bargaining agreements with various labor unions			87.00%
American Airlines, Inc. | Workforce Subject to Collective-Bargaining Arrangements Expiring within One Year | Unionized Employees Concentration Risk
Long-term Purchase Commitment [Line Items]
Percentage of employees covered by collective bargaining agreements with various labor unions			38.00%
American Airlines, Inc. | Subsequent Event
Long-term Purchase Commitment [Line Items]
Collective bargaining agreement, term	5 years
American Airlines, Inc. | Private Party Antitrust Actions Related to the Northeast Alliance
Long-term Purchase Commitment [Line Items]
Number of private party plaintiffs who filed putative class action | plaintiff						2
Number of additional putative class action lawsuits | lawsuit				2
American Airlines, Inc. | Leasehold Improvements | LAX Modernization Project
Long-term Purchase Commitment [Line Items]
Airport development, amount							$ 1,600,000,000
Airport redevelopment, costs incurred and capitalized			$ 862,000,000
Airport redevelopment cost incurred in current year			283,000,000
Non-proprietary improvements sold and transferred			346,000,000
Non-proprietary improvements sold and transferred in current period			170,000,000
Proceeds for non-proprietary improvements not yet ready for use			53,000,000
American Airlines, Inc. | Special Facility Revenue Bonds
Long-term Purchase Commitment [Line Items]
Guarantor obligations, maximum exposure, undiscounted			520,000,000
American Airlines, Inc. | Secured Debt
Long-term Purchase Commitment [Line Items]
Long-term debt			27,526,000,000		30,043,000,000
American Airlines, Inc. | Enhanced Equipment Trust Certificates (EETC) | Secured Debt
Long-term Purchase Commitment [Line Items]
Long-term debt			7,657,000,000		9,175,000,000
American Airlines, Inc. | Special Facility Revenue Bonds | Secured Debt
Long-term Purchase Commitment [Line Items]
Long-term debt			967,000,000		$ 1,050,000,000
American Airlines, Inc. | PSP1 Promissory Note | Unsecured Debt
Long-term Purchase Commitment [Line Items]
Guarantor obligations, maximum exposure, undiscounted			1,800,000,000
American Airlines, Inc. | Senior Notes 3.75% Matures 2025 | Unsecured Debt
Long-term Purchase Commitment [Line Items]
Guarantor obligations, maximum exposure, undiscounted			$ 487,000,000
Fixed interest rate per annum			3.75%
American Airlines, Inc. | Convertible Senior Notes 6.50% Due 2025 | Unsecured Debt
Long-term Purchase Commitment [Line Items]
Guarantor obligations, maximum exposure, undiscounted			$ 1,000,000,000
Fixed interest rate per annum			6.50%