Condensed Consolidated Statement of Comprehensive Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
OPERATING REVENUES:
Passenger	$ 4,564	$ 4,306	$ 13,249	$ 12,524
Freight	45	41	128	123
Other	191	198	600	624
Total operating revenues	4,800	4,545	13,977	13,271
OPERATING EXPENSES:
Salaries, wages, and benefits	1,363	1,271	4,044	3,751
Fuel and oil	1,386	1,450	4,125	4,396
Maintenance materials and repairs	248	271	734	842
Aircraft rentals	71	92	227	277
Landing fees and other rentals	289	290	849	848
Depreciation and amortization	238	221	687	643
Acquisition and integration	23	28	78	66
Other operating expenses	568	532	1,628	1,555
Total operating expenses	4,186	4,155	12,372	12,378
OPERATING INCOME	614	390	1,605	893
OTHER EXPENSES (INCOME):
Interest expense	31	35	97	97
Capitalized interest	(6)	(4)	(18)	(17)
Interest income	(2)	(1)	(5)	(5)
Other (gains) losses, net	66	(59)	16	(58)
Total other expenses (income)	89	(29)	90	17
INCOME BEFORE INCOME TAXES	525	419	1,515	876
PROVISION FOR INCOME TAXES	196	160	569	334
NET INCOME	329	259	946	542
NET INCOME PER SHARE, BASIC	$ 0.48	$ 0.37	$ 1.37	$ 0.76
NET INCOME PER SHARE, DILUTED	$ 0.48	$ 0.37	$ 1.36	$ 0.75
COMPREHENSIVE INCOME	$ 126	$ 393	$ 857	$ 547
BASIC WEIGHTED AVERAGE SHARES OUTSTANDING
Basic	683	703	690	714
DILUTED WEIGHTED AVERAGE SHARES OUTSTANDING
Diluted	691	711	699	722
Cash dividends declared per common share	$ 0.06	$ 0.04	$ 0.16	$ 0.09