Statements of Consolidated Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net income (loss)	$ 473	$ (1,841)	$ (1,318)	$ (5,172)
Other comprehensive income (loss), net of tax:
Employee benefit plans	(9)	250	17	(292)
Investments and other	(1)	0	(2)	1
Total other comprehensive income (loss), net of tax	(10)	250	15	(291)
Total comprehensive income (loss), net	463	(1,591)	(1,303)	(5,463)
United Airlines, Inc.
Net income (loss)	474	(1,841)	(1,317)	(5,171)
Other comprehensive income (loss), net of tax:
Employee benefit plans	(9)	250	17	(292)
Investments and other	(1)	0	(2)	1
Total other comprehensive income (loss), net of tax	(10)	250	15	(291)
Total comprehensive income (loss), net	$ 464	$ (1,591)	$ (1,302)	$ (5,462)