v3.26.1
Accumulated Other Comprehensive Loss - Reclassifications out of AOCI (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Nonoperating other income (expense), net $ 339   $ 297   $ 774 $ 675
Total reclassifications for the period, net of tax (71) $ 382 (599) $ 473 311 (126)
American Airlines, Inc.            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Nonoperating other income (expense), net 193   157   494 418
Total reclassifications for the period, net of tax (194) $ 274 (718) $ 384 80 (334)
Amounts reclassified from AOCI            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Total reclassifications for the period, net of tax 16   17   32 35
Amounts reclassified from AOCI | American Airlines, Inc.            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Total reclassifications for the period, net of tax 16   17   32 35
Amounts reclassified from AOCI | Prior service cost            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Nonoperating other income (expense), net 3   3   7 7
Amounts reclassified from AOCI | Prior service cost | American Airlines, Inc.            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Nonoperating other income (expense), net 3   3   7 7
Amounts reclassified from AOCI | Actuarial loss            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Nonoperating other income (expense), net 13   14   25 28
Amounts reclassified from AOCI | Actuarial loss | American Airlines, Inc.            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Nonoperating other income (expense), net $ 13   $ 14   $ 25 $ 28