Consolidated Statement of Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
OPERATING REVENUES:
Passenger	$ 16,721	$ 16,093	$ 14,754
Freight	164	160	139
Other	814	835	765
Total operating revenues	17,699	17,088	15,658
OPERATING EXPENSES:
Salaries, wages, and benefits	5,035	4,749	4,371
Fuel and oil	5,763	6,120	5,644
Maintenance materials and repairs	1,080	1,132	955
Aircraft rentals	361	355	308
Landing fees and other rentals	1,103	1,043	959
Depreciation and amortization	867	844	715
Acquisition and integration	86	183	134
Other operating expenses	2,126	2,039	1,879
Total operating expenses	16,421	16,465	14,965
OPERATING INCOME	1,278	623	693
OTHER EXPENSES (INCOME):
Interest expense	131	147	194
Capitalized interest	(24)	(21)	(12)
Interest income	(6)	(7)	(10)
Other (gains) losses, net	(32)	(181)	198
Total other expenses (income)	69	(62)	370
INCOME BEFORE INCOME TAXES	1,209	685	323
PROVISION FOR INCOME TAXES	455	264	145
NET INCOME	$ 754	$ 421	$ 178
NET INCOME PER SHARE, BASIC (in dollars per share)	$ 1.06	$ 0.56	$ 0.23
NET INCOME PER SHARE, DILUTED (in dollars per share)	$ 1.05	$ 0.56	$ 0.23
Cash dividends declared per common share (in dollars per share)	$ 0.1300	$ 0.0345	$ 0.0180