Statements of Consolidated Comprehensive Income (Loss) (UA) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net income (loss)	$ 2,618	$ 737	$ (1,964)
Other comprehensive income (loss), net of tax:
Employee benefit plans	(261)	1,145	199
Investments and other	24	(28)	(2)
Total other comprehensive income (loss), net of tax	(237)	1,117	197
Total comprehensive income (loss), net	2,381	1,854	(1,767)
United Airlines, Inc.
Net income (loss)	2,620	739	(1,962)
Other comprehensive income (loss), net of tax:
Employee benefit plans	(261)	1,145	199
Investments and other	24	(28)	(2)
Total other comprehensive income (loss), net of tax	(237)	1,117	197
Total comprehensive income (loss), net	$ 2,383	$ 1,856	$ (1,765)