Condensed Consolidated Statement of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
OPERATING REVENUES:
Passenger	$ 4,745	$ 4,669	$ 14,403	$ 13,971
Freight	42	42	128	129
Other	484	428	1,366	1,250
Total operating revenues	5,271	5,139	15,897	15,350
OPERATING EXPENSES:
Salaries, wages, and benefits	1,795	1,909	5,395	5,089
Fuel and oil	1,003	941	2,915	2,696
Maintenance materials and repairs	263	258	758	801
Aircraft rentals	51	56	158	174
Landing fees and other rentals	324	307	969	918
Depreciation and amortization	302	315	939	903
Other operating expenses	699	658	2,021	1,854
Total operating expenses	4,437	4,444	13,155	12,435
OPERATING INCOME	834	695	2,742	2,915
OTHER EXPENSES (INCOME):
Interest Expense	28	31	84	93
Capitalized interest	(15)	(12)	(38)	(34)
Interest income	(9)	(6)	(24)	(17)
Other (gains) losses, net	39	64	207	135
Total other expenses (income)	43	77	229	177
INCOME BEFORE INCOME TAXES	791	618	2,513	2,738
PROVISION FOR INCOME TAXES	288	230	913	1,016
NET INCOME	$ 503	$ 388	$ 1,600	$ 1,722
NET INCOME PER SHARE, BASIC	$ 0.84	$ 0.63	$ 2.65	$ 2.73
NET INCOME PER SHARE, DILUTED	$ 0.84	$ 0.62	$ 2.64	$ 2.70
COMPREHENSIVE INCOME	$ 630	$ 517	$ 1,787	$ 2,274
BASIC WEIGHTED AVERAGE SHARES OUTSTANDING
Basic	597	618	605	630
DILUTED WEIGHTED AVERAGE SHARES OUTSTANDING
Diluted	598	625	606	638
Cash dividends declared per common share	$ 0.125	$ 0.100	$ 0.350	$ 0.275