Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Passenger:
Mainline	$ 29,105	$ 28,105	$ 28,898
Regional carriers	5,714	5,672	5,884
Total passenger revenue	34,819	33,777	34,782
Cargo	729	668	813
Other	5,696	5,194	5,109
Total operating revenue	41,244	39,639	40,704
Operating Expense:
Salaries and related costs	10,436	10,034	8,776
Aircraft fuel and related taxes	5,733	5,133	6,544
Regional carriers expense	4,503	4,311	4,241
Depreciation and amortization	2,235	1,902	1,835
Contracted services	2,184	1,991	1,848
Aircraft maintenance materials and outside repairs	1,992	1,823	1,848
Passenger commissions and other selling expenses	1,787	1,710	1,672
Landing fees and other rents	1,528	1,490	1,493
Passenger service	1,067	907	872
Profit sharing	1,065	1,115	1,490
Aircraft rent	351	285	250
Other	2,249	1,986	2,033
Total operating expense	35,130	32,687	32,902
Operating Income	6,114	6,952	7,802
Non-Operating Expense:
Interest expense, net	(396)	(388)	(481)
Miscellaneous, net	(17)	72	(164)
Total non-operating expense, net	(413)	(316)	(645)
Income Before Income Taxes	5,701	6,636	7,157
Income Tax Provision	(2,124)	(2,263)	(2,631)
Net Income	$ 3,577	$ 4,373	$ 4,526
Basic Earnings Per Share (usd per share)	$ 4.97	$ 5.82	$ 5.68
Diluted Earnings Per Share (usd per share)	4.95	5.79	5.63
Cash Dividends Declared Per Share (usd per share)	$ 1.02	$ 0.68	$ 0.45