CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - 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
Beginning of year (in shares) at Dec. 31, 2022			683,000,000
Beginning of year at Dec. 31, 2022	$ 5,895	$ 5,833	$ 683	$ (11,389)	$ 6,322	$ 14,050	$ (3,833)	$ 62
Beginning of year (in shares) at Dec. 31, 2022				179,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,663	2,656				2,656		7
Other comprehensive income (loss)	276	279					279	(3)
Stock issued under employee benefit plans and other (in shares)				(3,000,000)
Stock issued under employee benefit plans and other	226	226		$ 159	67
Dividends declared on common stock	(592)	(592)				(592)
End of year (in shares) at Dec. 31, 2023			683,000,000
End of year at Dec. 31, 2023	8,468	8,402	$ 683	$ (11,230)	6,389	16,114	(3,554)	66
End of year (in shares) at Dec. 31, 2023				176,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(638)	(649)				(649)		11
Other comprehensive income (loss)	(472)	(456)					(456)	(16)
Stock issued under employee benefit plans and other (in shares)				(3,000,000)
Stock issued under employee benefit plans and other	203	203		$ 171	32
Dividends declared on common stock	(536)	(536)				(536)
Change in noncontrolling interests	(1)							(1)
End of year (in shares) at Dec. 31, 2024			683,000,000
End of year at Dec. 31, 2024	$ 7,024	6,964	$ 683	$ (11,059)	6,421	14,929	(4,010)	60
End of year (in shares) at Dec. 31, 2024	172,567,636			173,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ (957)	(957)				(957)		0
Other comprehensive income (loss)	141	141					141	0
Stock issued under employee benefit plans and other (in shares)				(4,000,000)
Stock issued under employee benefit plans and other	133	133		$ 186	(53)
Dividends declared on common stock	(267)	(267)				(267)
Reclassification of other comprehensive income (loss) disposed in the Kidney Care separation	115	115					115
Disposition of noncontrolling interest associated with the Kidney Care separation	(87)							(87)
End of year (in shares) at Dec. 31, 2025			683,000,000
End of year at Dec. 31, 2025	$ 6,102	$ 6,129	$ 683	$ (10,873)	$ 6,368	$ 13,705	$ (3,754)	$ (27)
End of year (in shares) at Dec. 31, 2025	169,213,617			169,000,000