v3.26.3
REVENUE RECOGNITION - Passenger Revenue (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Disaggregation of Revenue [Line Items]        
Passenger revenue $ 20,186 $ 16,673 $ 55,797 $ 47,361
Passenger        
Disaggregation of Revenue [Line Items]        
Passenger revenue 15,534 13,506 43,443 38,852
Ticket        
Disaggregation of Revenue [Line Items]        
Passenger revenue 13,620 11,859 38,158 34,173
Loyalty travel awards        
Disaggregation of Revenue [Line Items]        
Passenger revenue 1,302 1,108 3,578 3,140
Travel-related services        
Disaggregation of Revenue [Line Items]        
Passenger revenue $ 612 $ 539 $ 1,707 $ 1,539