Debt - Summary of Availability under Revolving Credit Facilities (Details)	Dec. 31, 2022 USD ($)
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	$ 3,033,000,000
Revolving Credit Facility | 2013 Credit  Facilities
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	736,000,000
Revolving Credit Facility | 2014 Credit  Facilities
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	1,631,000,000
Revolving Credit Facility | April 2016 Revolving Facility
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	446,000,000
Revolving Credit Facility | Short-term Revolving and Other Facilities
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	220,000,000
American Airlines, Inc.
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	3,033,000,000
American Airlines, Inc. | Revolving Credit Facility | 2013 Credit  Facilities
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	736,000,000
American Airlines, Inc. | Revolving Credit Facility | 2014 Credit  Facilities
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	1,631,000,000
American Airlines, Inc. | Revolving Credit Facility | April 2016 Revolving Facility
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	446,000,000
American Airlines, Inc. | Revolving Credit Facility | Short-term Revolving and Other Facilities
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	220,000,000
American Airlines, Inc. | Revolving Credit Facility | Other Short-term Revolving Facility
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	150,000,000
American Airlines, Inc. | Revolving Credit Facility | Cargo Receivable Facility
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	$ 70,000,000