Condensed Consolidated Statements of Operations and Comprehensive Income/(Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Revenue:
Total operating revenue	$ 13,748	$ 12,759
Operating Expense:
Salaries and related costs	3,791	3,386
Aircraft fuel and related taxes	2,598	2,676
Ancillary businesses and refinery	1,370	1,125
Contracted services	1,024	1,010
Landing fees and other rents	748	584
Aircraft maintenance materials and outside repairs	679	585
Depreciation and amortization	615	564
Regional carrier expense	550	559
Passenger commissions and other selling expenses	550	500
Passenger service	413	416
Aircraft rent	136	132
Profit sharing	125	72
Pilot agreement and related expenses	0	864
Other	535	563
Total operating expense	13,134	13,036
Operating Income/(Loss)	614	(277)
Non-Operating Expense:
Interest expense, net	(205)	(227)
Gain/(loss) on investments, net	(227)	122
Loss on extinguishment of debt	(4)	(22)
Miscellaneous, net	(56)	(102)
Total non-operating expense, net	(492)	(229)
Income/(Loss) Before Income Taxes	122	(506)
Income Tax (Provision)/Benefit	(85)	143
Net Income/(Loss)	$ 37	$ (363)
Basic Earnings/(Loss) Per Share (USD per share)	$ 0.06	$ (0.57)
Diluted Earnings/(Loss) Per Share (USD per share)	$ 0.06	$ (0.57)
Comprehensive Income/(Loss)	$ 89	$ (316)
Passenger
Operating Revenue:
Total operating revenue	11,131	10,411
Cargo
Operating Revenue:
Total operating revenue	178	209
Other
Operating Revenue:
Total operating revenue	$ 2,439	$ 2,139