Statements of Consolidated Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating revenue:
Passenger-Mainline	$ 25,414	$ 26,333	$ 26,785
Passenger-Regional	6,043	6,452	6,977
Total passenger revenue	31,457	32,785	33,762
Cargo	876	937	938
Other operating revenue	4,223	4,142	4,201
Total revenue	36,556	37,864	38,901
Operating expense:
Salaries and related costs	10,275	9,713	8,935
Aircraft fuel	5,813	7,522	11,675
Regional capacity purchase	2,197	2,290	2,344
Landing fees and other rent	2,165	2,203	2,274
Depreciation and amortization	1,977	1,819	1,679
Aircraft maintenance materials and outside repairs	1,749	1,651	1,779
Distribution expenses	1,303	1,342	1,373
Aircraft rent	680	754	883
Special charges (Note 16)	638	326	443
Other operating expenses	5,421	5,078	5,143
Total operating expenses	32,218	32,698	36,528
Operating income	4,338	5,166	2,373
Nonoperating income (expense):
Interest expense	(614)	(669)	(735)
Interest capitalized	72	49	52
Interest income	42	25	22
Miscellaneous, net (Note 16)	(19)	(352)	(584)
Total other expense	(519)	(947)	(1,245)
Income before income taxes	3,819	4,219	1,128
Income tax expense (benefit)	1,556	(3,121)	(4)
Net income	$ 2,263	$ 7,340	$ 1,132
Earnings per share, basic	$ 6.86	$ 19.52	$ 3.05
Earnings per share, diluted	$ 6.85	$ 19.47	$ 2.93
United Airlines, Inc.
Operating revenue:
Passenger-Mainline	$ 25,414	$ 26,333	$ 26,785
Passenger-Regional	6,043	6,452	6,977
Total passenger revenue	31,457	32,785	33,762
Cargo	876	937	938
Other operating revenue	4,223	4,142	4,201
Total revenue	36,556	37,864	38,901
Operating expense:
Salaries and related costs	10,275	9,713	8,935
Aircraft fuel	5,813	7,522	11,675
Regional capacity purchase	2,197	2,290	2,344
Landing fees and other rent	2,165	2,203	2,274
Depreciation and amortization	1,977	1,819	1,679
Aircraft maintenance materials and outside repairs	1,749	1,651	1,779
Distribution expenses	1,303	1,342	1,373
Aircraft rent	680	754	883
Special charges (Note 16)	638	326	443
Other operating expenses	5,418	5,076	5,139
Total operating expenses	32,215	32,696	36,524
Operating income	4,341	5,168	2,377
Nonoperating income (expense):
Interest expense	(614)	(670)	(742)
Interest capitalized	72	49	52
Interest income	42	25	22
Miscellaneous, net (Note 16)	(19)	(351)	(599)
Total other expense	(519)	(947)	(1,267)
Income before income taxes	3,822	4,221	1,110
Income tax expense (benefit)	1,558	(3,080)	(4)
Net income	$ 2,264	$ 7,301	$ 1,114