Consolidated Statement of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
OPERATING REVENUES:
Operating Revenue	$ 22,428	$ 21,965	$ 21,146
OPERATING EXPENSES:
Salaries, wages, and benefits	8,293	7,649	7,305
Fuel and oil	4,347	4,616	4,076
Maintenance materials and repairs	1,223	1,107	1,001
Landing fees and airport rentals	1,363	1,334	1,292
Depreciation and amortization	1,219	1,201	1,218
Other operating expenses	3,026	2,852	2,847
Total operating expenses	19,471	18,759	17,739
OPERATING INCOME	2,957	3,206	3,407
OTHER EXPENSES (INCOME):
Interest Expense	118	131	114
Capitalized interest	(36)	(38)	(49)
Interest income	(90)	(69)	(35)
Other (gains) losses, net	8	18	112
Total other expenses (income)	0	42	142
INCOME BEFORE INCOME TAXES	2,957	3,164	3,265
PROVISION (BENEFIT) FOR INCOME TAXES	657	699	(92)
NET INCOME	$ 2,300	$ 2,465	$ 3,357
Earnings Per Share, Basic	$ 4.28	$ 4.30	$ 5.58
Earnings Per Share, Diluted	$ 4.27	$ 4.29	$ 5.57
Passenger
OPERATING REVENUES:
Operating Revenue	$ 20,776	$ 20,455	$ 19,763
Freight
OPERATING REVENUES:
Operating Revenue	172	175	173
Other
OPERATING REVENUES:
Operating Revenue	$ 1,480	$ 1,335	$ 1,210