Employee Benefit Plans - Additional Information (Details) - USD ($) $ in Millions		12 Months Ended
	Jun. 14, 2019	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Mar. 29, 2019
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, prior service cost remines to be amortized		$ 179
Average remaining life expectancy of retirees		11 years
Weighted average expected rate of return on plan assets		8.00%
Defined benefit plan, assumptions used for expected long-term rate of return on plan assets, term		10 years
Minimum required employer contributions, next fiscal year		$ 69
Estimated period of liquidation of underlying assets		10 years
Defined benefit plan master trust future funding commitments		$ 1,500
Defined benefit plan master trust future funding commitments, period		5 years
Contributions to defined contribution benefit plans		$ 949	$ 920	$ 860
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected rate of return on plan assets		8.00%	8.00%	8.00%
International Association of Machinists & Aerospace Workers (IAM) National Pension Fund | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Contribution to multiemployer plan by employer, individually significant		$ 46	$ 43	$ 40
Contributions to multiemployer plan by company			$ 507
Contributions to multiemployer plan by company, percentage of total contributions to plan (more than)			5.00%
Multiemployer plan, funded status percentage (over)					80.00%
Rehabilitation plan, percentage increase in company annual contributions	2.50%
American Airlines, Inc.
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, prior service cost remines to be amortized		$ 179
Average remaining life expectancy of retirees		11 years
Weighted average expected rate of return on plan assets		8.00%
Defined benefit plan, assumptions used for expected long-term rate of return on plan assets, term		10 years
Minimum required employer contributions, next fiscal year		$ 67
Estimated period of liquidation of underlying assets		10 years
Defined benefit plan master trust future funding commitments		$ 1,500
Defined benefit plan master trust future funding commitments, period		5 years
Contributions to defined contribution benefit plans		$ 916	$ 893	$ 835
American Airlines, Inc. | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected rate of return on plan assets		8.00%	8.00%	8.00%
American Airlines, Inc. | International Association of Machinists & Aerospace Workers (IAM) National Pension Fund | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Contribution to multiemployer plan by employer, individually significant		$ 46	$ 43	$ 40
Contributions to multiemployer plan by company			$ 507
Contributions to multiemployer plan by company, percentage of total contributions to plan (more than)			5.00%
Multiemployer plan, funded status percentage (over)					80.00%
Rehabilitation plan, percentage increase in company annual contributions	2.50%