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, 2021			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, Treasury, beginning period (in shares) at Dec. 31, 2021				182,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	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			683,000,000
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, Treasury, ending period (in shares) at Jun. 30, 2022				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, Treasury, beginning period (in shares) at Mar. 31, 2022				180,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	255	252				252		3
Other comprehensive income (loss)	(380)	(380)					(380)
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			683,000,000
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, Treasury, ending period (in shares) at Jun. 30, 2022				180,000,000
Balance, beginning of period (in shares) at Dec. 31, 2022			683,000,000
Balance, beginning of period (in usd) at Dec. 31, 2022	$ 5,895	5,833	$ 683	$ (11,389)	6,322	14,050	(3,833)	62
Balance, Treasury, beginning period (in shares) at Dec. 31, 2022	179,062,594			179,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ (94)	(97)				(97)		3
Other comprehensive income (loss)	19	19					19
Stock issued under employee benefit plans and other (in shares)				(2,000,000)
Stock issued under employee benefit plans and other	112	112		$ 93	19
Dividends declared on common stock	(298)	(298)				(298)
Change in noncontrolling interests	(3)							(3)
Balance, end of period (in shares) at Jun. 30, 2023			683,000,000
Balance, end of period (in usd) at Jun. 30, 2023	$ 5,631	5,569	$ 683	$ (11,296)	6,341	13,655	(3,814)	62
Balance, Treasury, ending period (in shares) at Jun. 30, 2023	177,125,182			177,000,000
Balance, beginning of period (in shares) at Mar. 31, 2023			683,000,000
Balance, beginning of period (in usd) at Mar. 31, 2023	$ 5,941	5,879	$ 683	$ (11,324)	6,312	13,947	(3,739)	62
Balance, Treasury, beginning period (in shares) at Mar. 31, 2023				178,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(139)	(141)				(141)		2
Other comprehensive income (loss)	(75)	(75)					(75)
Stock issued under employee benefit plans and other (in shares)				(1,000,000)
Stock issued under employee benefit plans and other	57	57		$ 28	29
Dividends declared on common stock	(151)	(151)				(151)
Change in noncontrolling interests	(2)							(2)
Balance, end of period (in shares) at Jun. 30, 2023			683,000,000
Balance, end of period (in usd) at Jun. 30, 2023	$ 5,631	$ 5,569	$ 683	$ (11,296)	$ 6,341	$ 13,655	$ (3,814)	$ 62
Balance, Treasury, ending period (in shares) at Jun. 30, 2023	177,125,182			177,000,000