Statements of Consolidated Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Operating revenue:
Passenger-Mainline	$ 5,938	$ 5,848
Passenger-Regional	1,482	1,536
Total passenger revenue	7,420	7,384
Cargo	242	209
Other operating revenue	946	1,103
Total revenue	8,608	8,696
Operating expense:
Salaries and related costs	2,301	2,153
Aircraft fuel	1,864	2,917
Regional capacity purchase	570	559
Landing fees and other rent	543	572
Depreciation and amortization	429	409
Aircraft maintenance materials and outside repairs	397	458
Distribution expenses	312	318
Aircraft rent	201	224
Special charges (Note 10)	64	52
Other operating expenses	1,186	1,383
Total operating expenses	7,867	9,045
Operating income (loss)	741	(349)
Nonoperating income (expense):
Interest expense	(173)	(187)
Interest capitalized	12	14
Interest income	5	5
Miscellaneous, net (Note 10)	(74)	(89)
Total other expense	(230)	(257)
Income (loss) before income taxes	511	(606)
Income tax expense	3	3
Net income (loss)	508	(609)
Earnings (loss) per share, basic	$ 1.33	$ (1.66)
Earnings (loss) per share, diluted	$ 1.32	$ (1.66)
United Airlines, Inc.
Operating revenue:
Passenger-Mainline	5,938	5,848
Passenger-Regional	1,482	1,536
Total passenger revenue	7,420	7,384
Cargo	242	209
Other operating revenue	946	1,103
Total revenue	8,608	8,696
Operating expense:
Salaries and related costs	2,301	2,153
Aircraft fuel	1,864	2,917
Regional capacity purchase	570	559
Landing fees and other rent	543	572
Depreciation and amortization	429	409
Aircraft maintenance materials and outside repairs	397	458
Distribution expenses	312	318
Aircraft rent	201	224
Special charges (Note 10)	64	52
Other operating expenses	1,186	1,375
Total operating expenses	7,867	9,037
Operating income (loss)	741	(341)
Nonoperating income (expense):
Interest expense	(173)	(189)
Interest capitalized	12	14
Interest income	5	5
Miscellaneous, net (Note 10)	(74)	(66)
Total other expense	(230)	(236)
Income (loss) before income taxes	511	(577)
Income tax expense	2	3
Net income (loss)	$ 509	$ (580)