EARNINGS PER SHARE - Schedule of Net Income (Loss) Attributable to Stockholder (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Income (loss) from continuing operations	$ (193)	$ 185	$ (193)	$ 193
Net income attributable to noncontrolling interests	2	3	3	5
Income (loss) from continuing operations attributable to Baxter stockholders	(195)	182	(196)	188
Income from discontinued operations, net of tax	54	70	99	135
Net income (loss) attributable to Baxter stockholders	$ (141)	$ 252	$ (97)	$ 323