Statements of Consolidated Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating revenue:
Total operating revenue	$ 11,429	$ 7,566
Operating expense:
Aircraft fuel	3,174	2,230
Salaries and related costs	3,322	2,787
Landing fees and other rent	717	612
Aircraft maintenance materials and outside repairs	702	407
Depreciation and amortization	655	611
Regional capacity purchase	615	565
Distribution expenses	403	226
Aircraft rent	56	61
Special charges (credits)	14	(8)
Other operating expenses	1,814	1,451
Total operating expense	11,472	8,942
Operating loss	(43)	(1,376)
Nonoperating income (expense):
Interest expense	(486)	(424)
Interest capitalized	38	24
Interest income	170	5
Unrealized gains on investments, net	24	0
Miscellaneous, net	41	19
Total nonoperating expense, net	(213)	(376)
Loss before income tax benefit	(256)	(1,752)
Income tax benefit	(62)	(375)
Net loss	(194)	(1,377)
United Airlines, Inc.
Operating revenue:
Total operating revenue	11,429	7,566
Operating expense:
Aircraft fuel	3,174	2,230
Salaries and related costs	3,322	2,787
Landing fees and other rent	717	612
Aircraft maintenance materials and outside repairs	702	407
Depreciation and amortization	655	611
Regional capacity purchase	615	565
Distribution expenses	403	226
Aircraft rent	56	61
Special charges (credits)	14	(8)
Other operating expenses	1,814	1,450
Total operating expense	11,472	8,941
Operating loss	(43)	(1,375)
Nonoperating income (expense):
Interest expense	(486)	(424)
Interest capitalized	38	24
Interest income	170	5
Unrealized gains on investments, net	24	0
Miscellaneous, net	41	19
Total nonoperating expense, net	(213)	(376)
Loss before income tax benefit	(256)	(1,751)
Income tax benefit	(62)	(374)
Net loss	(194)	(1,377)
Passenger revenue
Operating revenue:
Total operating revenue	10,274	6,348
Passenger revenue | United Airlines, Inc.
Operating revenue:
Total operating revenue	10,274	6,348
Cargo
Operating revenue:
Total operating revenue	398	627
Cargo | United Airlines, Inc.
Operating revenue:
Total operating revenue	398	627
Other operating revenue
Operating revenue:
Total operating revenue	757	591
Other operating revenue | United Airlines, Inc.
Operating revenue:
Total operating revenue	$ 757	$ 591