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	601	596				596		5
Other comprehensive income (loss)	$ (62)	(62)					(62)
Purchases of treasury stock (in shares)	7,300,000			7,000,000
Purchases of treasury stock	$ (600)	(600)		$ (600)
Stock issued under employee benefit plans and other (in shares)				2,000,000
Stock issued under employee benefit plans and other	137	137		$ 90	47
Dividends declared on common stock	(266)	(266)				(266)
Change in noncontrolling interests	(1)							(1)
Balance, end of period (in shares) at Jun. 30, 2021			683,000,000
Balance, end of period (in usd) at Jun. 30, 2021	8,535	8,494	$ 683	$ (11,561)	6,090	16,658	(3,376)	41
Balance, end of period, treasury (in shares) at Jun. 30, 2021				184,000,000
Balance, beginning of period (in shares) at Mar. 31, 2021			683,000,000
Balance, beginning of period (in usd) at Mar. 31, 2021	8,490	8,452	$ 683	$ (11,296)	6,043	16,502	(3,480)	38
Balance, beginning of period, treasury (in shares) at Mar. 31, 2021				181,000,000
Gains (losses)
Net income	301	298				298		3
Other comprehensive income (loss)	104	104					104
Purchases of treasury stock (in shares)				3,000,000
Purchases of treasury stock	(300)	(300)		$ (300)
Stock issued under employee benefit plans and other	82	82		35	47
Dividends declared on common stock	(142)	(142)				(142)
Balance, end of period (in shares) at Jun. 30, 2021			683,000,000
Balance, end of period (in usd) at Jun. 30, 2021	$ 8,535	8,494	$ 683	$ (11,561)	6,090	16,658	(3,376)	41
Balance, end of period, treasury (in shares) at Jun. 30, 2021				184,000,000
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	$ 328	323				323		5
Other comprehensive income (loss)	(387)	(387)					(387)
Purchases of treasury stock	(8)	(8)		$ (8)
Stock issued under employee benefit plans and other (in shares)				2,000,000
Stock issued under employee benefit plans and other	143	143		$ 87	56
Dividends declared on common stock	(289)	(289)				(289)
Change in noncontrolling interests	$ (5)							(5)
Balance, end of period (in shares) at Jun. 30, 2022	683,494,944		683,000,000
Balance, end of period (in usd) at Jun. 30, 2022	$ 8,903	8,859	$ 683	$ (11,409)	6,253	17,099	(3,767)	44
Balance, end of period, treasury (in shares) at Jun. 30, 2022	179,687,824			180,000,000
Balance, beginning of period (in shares) at Mar. 31, 2022			683,000,000
Balance, beginning of period (in usd) at Mar. 31, 2022	$ 9,119	9,075	$ 683	$ (11,422)	6,207	16,994	(3,387)	44
Balance, beginning of period, treasury (in shares) at Mar. 31, 2022				180,000,000
Gains (losses)
Net income	255	252				252		3
Other comprehensive income (loss)	$ (380)	(380)					(380)
Purchases of treasury stock (in shares)	100,000
Purchases of treasury stock	$ (8)	(8)		$ (8)
Stock issued under employee benefit plans and other	67	67		21	46
Dividends declared on common stock	(147)	(147)				(147)
Change in noncontrolling interests	$ (3)							(3)
Balance, end of period (in shares) at Jun. 30, 2022	683,494,944		683,000,000
Balance, end of period (in usd) at Jun. 30, 2022	$ 8,903	$ 8,859	$ 683	$ (11,409)	$ 6,253	$ 17,099	$ (3,767)	$ 44
Balance, end of period, treasury (in shares) at Jun. 30, 2022	179,687,824			180,000,000