Condensed Consolidated Statement of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
OPERATING REVENUES:
Passenger	$ 4,398	$ 4,178
Freight	42	44
Other	386	192
Total operating revenues	4,826	4,414
OPERATING EXPENSES:
Salaries, wages, and benefits	1,539	1,419
Fuel and oil	852	877
Maintenance materials and repairs	262	229
Aircraft rentals	59	60
Landing fees and other rentals	302	285
Depreciation and amortization	290	244
Acquisition and integration	0	23
Other operating expenses	578	497
Total operating expenses	3,882	3,634
OPERATING INCOME	944	780
OTHER EXPENSES (INCOME):
Interest Expense	30	32
Capitalized interest	(11)	(6)
Interest income	(5)	(1)
Other (gains) losses, net	114	32
Total other expenses (income)	128	57
INCOME BEFORE INCOME TAXES	816	723
PROVISION FOR INCOME TAXES	305	270
NET INCOME	$ 511	$ 453
NET INCOME PER SHARE, BASIC	$ 0.80	$ 0.67
NET INCOME PER SHARE, DILUTED	$ 0.79	$ 0.66
COMPREHENSIVE INCOME	$ 668	$ 449
BASIC WEIGHTED AVERAGE SHARES OUTSTANDING
Basic	641	674
DILUTED WEIGHTED AVERAGE SHARES OUTSTANDING
Diluted	648	682
Cash dividends declared per common share	$ 0.075	$ 0.060