v3.25.4
SEGMENTS - Segment Reporting (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting Information, Profit (Loss)      
Operating revenue $ 63,364 $ 61,643 $ 58,048
Airline salaries and related costs 17,520 16,161 14,607
Aircraft fuel and related costs 9,819 10,566 11,069
Depreciation and amortization 2,443 2,513 2,341
Operating income 5,822 5,995 5,521
Interest expense, net 679 747 834
Other non-operating income (expense) (144) (232) (279)
Income before income taxes 6,185 4,658 5,608
Total assets, end of period 81,317 75,372 73,644
Capital expenditures 4,499 5,140 5,323
Operating Segments      
Segment Reporting Information, Profit (Loss)      
Other non-operating income (expense) 1,042 (590) 921
Operating Segments | Airline      
Segment Reporting Information, Profit (Loss)      
Operating revenue 58,287 57,001 54,669
Airline salaries and related costs 17,520 16,161 14,607
Aircraft fuel and related costs 9,819 10,566 11,069
Depreciation and amortization 2,443 2,513 2,341
Other segment items 22,840 21,804 21,516
Operating income 5,665 5,957 5,136
Interest expense, net 679 747 834
Other non-operating income (expense) 1,042 (590) 921
Income before income taxes 6,028 4,620 5,223
Total assets, end of period 78,826 72,979 71,529
Capital expenditures 4,431 5,075 5,088
Operating Segments | Refinery      
Segment Reporting Information, Profit (Loss)      
Operating revenue 6,961 7,767 7,572
Refinery cost of goods sold 6,259 7,234 6,665
Depreciation and amortization 113 113 94
Other segment items 432 382 428
Operating income 157 38 385
Interest expense, net 1 3 17
Income before income taxes 156 35 368
Total assets, end of period 2,552 2,418 2,174
Capital expenditures 68 65 235
Intersegment Sales/Other      
Segment Reporting Information, Profit (Loss)      
Operating revenue (1,884) (3,125) (4,193)
Interest expense, net (1) (3) (17)
Income before income taxes 1 3 17
Total assets, end of period (61) (25) (59)
Intersegment Sales/Other | Sales to airline segment      
Segment Reporting Information, Profit (Loss)      
Operating revenue (1,150) (1,421) (1,535)
Intersegment Sales/Other | Exchanged products      
Segment Reporting Information, Profit (Loss)      
Operating revenue (580) (1,473) (2,354)
Intersegment Sales/Other | Sales of refined products      
Segment Reporting Information, Profit (Loss)      
Operating revenue $ (154) $ (231) $ (304)