Income Taxes - Additional Disclosures (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Line Items]
Other carryforwards	$ 3,000
Income tax provision (benefit)	$ (555)	$ (2,568)	$ 570
Income tax expense, effective rate	22.00%
Federal
Income Taxes [Line Items]
Gross NOL carryforwards	$ 17,200
Operating loss carryforwards and other carryforwards, subject to expiration	6,900
Operating loss carryforwards and other carryforwards, not subject to expiration	13,300
State
Income Taxes [Line Items]
Operating loss carryforwards, subject to expiration	6,000
American Airlines, Inc.
Income Taxes [Line Items]
Other carryforwards	2,400
Income tax provision (benefit)	$ (500)	$ (2,453)	$ 633
Income tax expense, effective rate	22.00%
American Airlines, Inc. | Federal
Income Taxes [Line Items]
Gross NOL carryforwards	$ 17,100
Operating loss carryforwards and other carryforwards, subject to expiration	7,300
Operating loss carryforwards and other carryforwards, not subject to expiration	12,200
American Airlines, Inc. | State
Income Taxes [Line Items]
Operating loss carryforwards, subject to expiration	$ 6,000