v3.26.3
Debt - Narrative (Details)
$ in Millions
 1 Months Ended 2 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Aug. 31, 2026
USD ($)
aircraft
pass_through_trust
Jun. 30, 2026
pass_through_trust
May 31, 2026
USD ($)
aircraft
pass_through_trust
Mar. 31, 2026
USD ($)
Feb. 28, 2026
Nov. 30, 2025
USD ($)
pass_through_trust
aircraft
Sep. 30, 2026
USD ($)
aircraft
Sep. 30, 2026
USD ($)
Mar. 31, 2026
USD ($)
aircraft
Sep. 30, 2026
USD ($)
aircraft
Sep. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Debt Instrument [Line Items]                        
Proceeds from issuance of long-term debt                   $ 5,933 $ 2,169  
Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Line of credit facility, available borrowing capacity             $ 3,510 $ 3,510   3,510    
American Airlines, Inc.                        
Debt Instrument [Line Items]                        
Proceeds from issuance of long-term debt                   5,933 $ 2,169  
American Airlines, Inc. | Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Line of credit facility, available borrowing capacity             3,510 3,510   3,510    
Enhanced Equipment Trust Certificates (EETC) | American Airlines, Inc.                        
Debt Instrument [Line Items]                        
Repayments of long-term debt                   310    
Secured Debt                        
Debt Instrument [Line Items]                        
Long-term debt             25,575 25,575   25,575   $ 24,219
Secured Debt | American Airlines, Inc.                        
Debt Instrument [Line Items]                        
Long-term debt             25,575 25,575   25,575   24,219
Other Revolving Facility | American Airlines, Inc. | Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Line of credit facility, aggregate commitments             350 350   350    
Other Revolving Facility | Secured Debt | American Airlines, Inc. | Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Amount drawn                   0    
Cargo Receivable Facility | American Airlines, Inc. | Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Line of credit facility, available borrowing capacity             50 50   50    
2013 Revolving Facility | Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Line of credit facility, available borrowing capacity             363 363   363    
2013 Revolving Facility | American Airlines, Inc. | Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Line of credit facility, available borrowing capacity             363 363   363    
2013 Revolving Facility | Line of Credit | American Airlines, Inc. | Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Line of credit facility, aggregate commitments       $ 363     363 363 $ 363 363    
2013 Revolving Facility | Line of Credit | American Airlines, Inc. | Letter of Credit                        
Debt Instrument [Line Items]                        
Line of credit facility, aggregate commitments       155     155 155 155 155    
2013 Revolving Facility | Secured Debt                        
Debt Instrument [Line Items]                        
Long-term debt             960 960   960   970
2013 Revolving Facility | Secured Debt | American Airlines, Inc.                        
Debt Instrument [Line Items]                        
Long-term debt             960 960   960   970
2014 Revolving Facility | Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Line of credit facility, available borrowing capacity             1,296 1,296   1,296    
2014 Revolving Facility | American Airlines, Inc. | Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Line of credit facility, available borrowing capacity             1,296 1,296   1,296    
2014 Revolving Facility | Line of Credit | American Airlines, Inc. | Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Line of credit facility, aggregate commitments       1,300         1,300      
2014 Revolving Facility | Line of Credit | American Airlines, Inc. | Letter of Credit                        
Debt Instrument [Line Items]                        
Line of credit facility, aggregate commitments       195         195      
2014 Revolving Facility | Secured Debt                        
Debt Instrument [Line Items]                        
Long-term debt             1,850 1,850   1,850   1,159
2014 Revolving Facility | Secured Debt | American Airlines, Inc.                        
Debt Instrument [Line Items]                        
Long-term debt             1,850 1,850   1,850   1,159
Credit Facility 2014 - Term Loans | Line of Credit | American Airlines, Inc. | Secured Debt                        
Debt Instrument [Line Items]                        
Annual principal payment, percentage     1.00%                  
Credit Facility 2014 - Term Loans | Line of Credit | American Airlines, Inc. | Base Rate | Secured Debt                        
Debt Instrument [Line Items]                        
Floor interest rate     0.00%                  
Debt instrument, basis spread on variable rate, interest rate margin     2.00%                  
Credit Facility 2014 - Term Loans | Line of Credit | American Airlines, Inc. | SOFR | Secured Debt                        
Debt Instrument [Line Items]                        
Floor interest rate     0.00%                  
Debt instrument, basis spread on variable rate, interest rate margin     3.00%                  
2026 Refinancing Term Loans | Line of Credit | American Airlines, Inc. | Secured Debt                        
Debt Instrument [Line Items]                        
Aggregate principal issued     $ 1,100                  
2026 Incremental Term Loans | Line of Credit | American Airlines, Inc. | Secured Debt                        
Debt Instrument [Line Items]                        
Aggregate principal issued     703                  
2023 Revolving Facility | Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Line of credit facility, available borrowing capacity             1,451 1,451   1,451    
2023 Revolving Facility | American Airlines, Inc. | Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Line of credit facility, available borrowing capacity             1,451 1,451   1,451    
2023 Revolving Facility | Line of Credit | American Airlines, Inc. | Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Line of credit facility, aggregate commitments       $ 1,500         $ 1,500      
2023 Revolving Facility | Secured Debt                        
Debt Instrument [Line Items]                        
Long-term debt             1,078 1,078   1,078   1,078
2023 Revolving Facility | Secured Debt | American Airlines, Inc.                        
Debt Instrument [Line Items]                        
Long-term debt             1,078 1,078   1,078   1,078
AAdvantage Term Loan Facility, Fourth Amendment | Line of Credit | American Airlines, Inc. | Base Rate | Secured Debt                        
Debt Instrument [Line Items]                        
Floor interest rate         0.00%              
Debt instrument, basis spread on variable rate, interest rate margin         1.75%              
AAdvantage Term Loan Facility, Fourth Amendment | Line of Credit | American Airlines, Inc. | SOFR | Secured Debt                        
Debt Instrument [Line Items]                        
Floor interest rate         0.00%              
Debt instrument, basis spread on variable rate, interest rate margin         2.75%              
2026-1 Class (B)R Aircraft Enhanced Equipment Trust Certificate ("EETCs") | Enhanced Equipment Trust Certificates (EETC) | American Airlines, Inc.                        
Debt Instrument [Line Items]                        
Fixed interest rate per annum       5.61%         5.61%      
Proceeds from issuance of long-term debt       $ 870                
2025-1 Aircraft Enhanced Equipment Trust Certificate ("EETCs") | Enhanced Equipment Trust Certificates (EETC) | American Airlines, Inc.                        
Debt Instrument [Line Items]                        
Aggregate principal issued           $ 1,100            
Number of pass through trusts | pass_through_trust           2            
Number of aircraft delivered or to be delivered | aircraft           25            
Proceeds from issuance of long-term debt                   $ 127   $ 978
Number of aircrafts financed | aircraft                 21 4    
2026-1 Aircraft Enhanced Equipment Trust Certificate ("EETCs") | Enhanced Equipment Trust Certificates (EETC) | American Airlines, Inc.                        
Debt Instrument [Line Items]                        
Aggregate principal issued     $ 1,100                  
Number of pass through trusts | pass_through_trust     2                  
Number of aircraft delivered or to be delivered | aircraft     32                  
2026 Engine Enhanced Equipment Trust Certificate ("EETCs") | Enhanced Equipment Trust Certificates (EETC) | American Airlines, Inc.                        
Debt Instrument [Line Items]                        
Aggregate principal issued             $ 567 $ 567   $ 567    
Number of pass through trusts | pass_through_trust   2                    
2026 Engine Enhanced Equipment Trust Certificate ("EETCs") | Enhanced Equipment Trust Certificates (EETC) | American Airlines, Inc. | Minimum                        
Debt Instrument [Line Items]                        
Fixed interest rate per annum             5.46% 5.46%   5.46%    
2026 Engine Enhanced Equipment Trust Certificate ("EETCs") | Enhanced Equipment Trust Certificates (EETC) | American Airlines, Inc. | Maximum                        
Debt Instrument [Line Items]                        
Fixed interest rate per annum             6.04% 6.04%   6.04%    
2026-2 Aircraft Enhanced Equipment Trust Certificate ("EETCs") | Enhanced Equipment Trust Certificates (EETC) | American Airlines, Inc.                        
Debt Instrument [Line Items]                        
Aggregate principal issued $ 1,300                      
Number of pass through trusts | pass_through_trust 2                      
Number of aircraft delivered or to be delivered | aircraft 37                      
Proceeds from issuance of long-term debt             $ 692          
Number of aircrafts financed | aircraft 23           23          
Remaining escrowed proceeds             $ 633 $ 633   $ 633    
2019-1 Engine Enhanced Equipment Trust Certificate | Enhanced Equipment Trust Certificates (EETC) | American Airlines, Inc.                        
Debt Instrument [Line Items]                        
Aggregate principal issued             339 339   339    
Long-term debt             228 228   228    
Senior short-term term loan facility | American Airlines, Inc. | Unsecured Debt                        
Debt Instrument [Line Items]                        
Prepayment of short-term term loan facility               629   629    
8.50% Senior Notes | Secured Debt                        
Debt Instrument [Line Items]                        
Fixed interest rate per annum                       8.50%
Long-term debt             $ 0 $ 0   $ 0   $ 1,000
8.50% Senior Notes | Secured Debt | American Airlines, Inc.                        
Debt Instrument [Line Items]                        
Fixed interest rate per annum             8.50% 8.50%   8.50%   8.50%
Long-term debt             $ 0 $ 0   $ 0   $ 1,000
Repayments of long-term debt               $ 1,000   1,000    
Equipment Loans and Other Notes Payable Issued in Current Year | Secured Debt | American Airlines, Inc.                        
Debt Instrument [Line Items]                        
Proceeds from issuance of long-term debt                   $ 705    
Average interest rate             5.87% 5.87%   5.87%