Employee Benefit Plans - Additional Information (Details) - USD ($) $ in Millions		2 Months Ended	12 Months Ended
	Jun. 14, 2019	Feb. 19, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Mar. 29, 2019
Defined Benefit Plan Disclosure [Line Items]
Estimated period of liquidation of underlying assets			10 years
Defined benefit plan master trust future funding commitments			$ 1,100
Defined benefit plan master trust future funding commitments, period			5 years
Contributions to defined contribution benefit plans			$ 1,400	$ 1,100	$ 949
Subsequent Event
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected rate of return on plan assets		7.75%
Defined benefit plan, assumptions used for expected long-term rate of return on plan assets, term		10 years
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected rate of return on plan assets			8.00%	8.00%	8.00%
Minimum required employer contributions, next fiscal year			$ 224
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			$ 57	$ 52	$ 46
Contributions to multiemployer plan by company				$ 570
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]
Estimated period of liquidation of underlying assets			10 years
Defined benefit plan master trust future funding commitments			$ 1,100
Defined benefit plan master trust future funding commitments, period			5 years
Contributions to defined contribution benefit plans			$ 1,400	$ 1,100	$ 916
American Airlines, Inc. | Subsequent Event
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected rate of return on plan assets		7.75%
Defined benefit plan, assumptions used for expected long-term rate of return on plan assets, term		10 years
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%
Minimum required employer contributions, next fiscal year			$ 221
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			$ 57	$ 52	$ 46
Contributions to multiemployer plan by company				$ 570
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%