v3.26.3
Revenue Recognition - Significant Contract Liabilities (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Disaggregation of Revenue [Line Items]    
Total $ 20,928 $ 17,722
American Airlines, Inc.    
Disaggregation of Revenue [Line Items]    
Total 20,928 17,722
Loyalty program liability    
Disaggregation of Revenue [Line Items]    
Total 11,514 10,564
Loyalty program liability | American Airlines, Inc.    
Disaggregation of Revenue [Line Items]    
Total 11,514 10,564
Air traffic liability    
Disaggregation of Revenue [Line Items]    
Total 9,414 7,158
Air traffic liability | American Airlines, Inc.    
Disaggregation of Revenue [Line Items]    
Total $ 9,414 $ 7,158