Condensed Consolidated Statements of Changes in Equity (unaudited) - USD ($) $ in Millions	Total	Total Baxter stockholders' equity	Common stock	Common stock in treasury	Additional contributed capital	Retained earnings	Accumulated other comprehensive income (loss)	Noncontrolling interests
Balance, beginning of period (in shares) at Dec. 31, 2020			683,000,000
Balance, beginning of period (in usd) at Dec. 31, 2020	$ 8,726	$ 8,689	$ 683	$ (11,051)	$ 6,043	$ 16,328	$ (3,314)	$ 37
Balance, beginning of period, treasury (in shares) at Dec. 31, 2020				179,000,000
Gains (losses)
Net income	300	298				298		2
Other comprehensive income (loss)	(166)	(166)					(166)
Purchases of treasury stock (in shares)				4,000,000
Purchases of treasury stock	(300)	(300)		$ (300)	0
Stock issued under employee benefit plans and other (in shares)				(2,000,000)
Stock issued under employee benefit plans and other	55	55		$ 55	0
Dividends declared on common stock	(124)	(124)				(124)
Change in noncontrolling interests	(1)							(1)
Balance, end of period (in shares) at Mar. 31, 2021			683,000,000
Balance, end of period (in usd) at Mar. 31, 2021	$ 8,490	8,452	$ 683	$ (11,296)	6,043	16,502	(3,480)	38
Balance, end of period, treasury (in shares) at Mar. 31, 2021				181,000,000
Balance, beginning of period (in shares) at Dec. 31, 2021	683,494,944		683,000,000
Balance, beginning of period (in usd) at Dec. 31, 2021	$ 9,121	9,077	$ 683	$ (11,488)	6,197	17,065	(3,380)	44
Balance, beginning of period, treasury (in shares) at Dec. 31, 2021	181,879,516			182,000,000
Gains (losses)
Net income	$ 73	71				71		2
Other comprehensive income (loss)	$ (7)	(7)					(7)
Purchases of treasury stock (in shares)	3,600,000
Stock issued under employee benefit plans and other (in shares)				(2,000,000)
Stock issued under employee benefit plans and other	$ 76	76		$ 66	10
Dividends declared on common stock	(142)	(142)				(142)
Change in noncontrolling interests	$ (2)							(2)
Balance, end of period (in shares) at Mar. 31, 2022	683,494,944		683,000,000
Balance, end of period (in usd) at Mar. 31, 2022	$ 9,119	$ 9,075	$ 683	$ (11,422)	$ 6,207	$ 16,994	$ (3,387)	$ 44
Balance, end of period, treasury (in shares) at Mar. 31, 2022	180,058,105			180,000,000