Condensed Consolidated Statements of Comprehensive Loss (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Statement of Comprehensive Income [Abstract]
Income (loss) from continuing operations	$ 122	$ 95	$ 186	$ 101
Other comprehensive income (loss) from continuing operations, net of tax:
Currency translation adjustments, net of tax expense (benefit) of ($18) and $3 for the three months ended June 30, 2025 and 2024, respectively, and ($12) and $16 for six months ended June 30, 2025 and 2024, respectively.	204	(48)	135	(167)
Pension and other postretirement benefits, net of tax expense (benefit) of ($3) and ($1) for the three months ended June 30, 2025 and 2024, respectively, and ($7) and $2 for six months ended June 30, 2025 and 2024, respectively.	(6)	0	6	4
Hedging activities, net of tax expense (benefit) of zero and $1 for the three months ended June 30, 2025 and 2024, respectively, and ($1) and $3 for six months ended June 30, 2025 and 2024, respectively.	(2)	3	(3)	11
Total other comprehensive income (loss) from continuing operations, net of tax	196	(45)	138	(152)
Comprehensive income (loss) from continuing operations	318	50	324	(51)
Income (loss) from discontinued operations, net of tax	(31)	(406)	31	(373)
Currency translation adjustments, net of tax expense (benefit) of zero and $(2) for the three months ended June 30, 2025 and 2024, respectively, and zero and $(4) for six months ended June 30, 2025 and 2024, respectively.	0	(60)	137	(125)
Pension and other postretirement benefits, net of tax expense (benefit) of zero for the three months ended June 30, 2025 and 2024, and $(3) and zero for six months ended June 30, 2025 and 2024, respectively.	0	(1)	(11)	(1)
Total other comprehensive income (loss) from discontinued operations	0	(61)	126	(126)
Comprehensive income (loss) from discontinued operations	(31)	(467)	157	(499)
Comprehensive income (loss)	287	(417)	481	(550)
Less: Comprehensive income attributable to noncontrolling interests	0	3	0	5
Less: Other comprehensive loss attributable to noncontrolling interests	0	0	0	(4)
Comprehensive income (loss) attributable to Baxter stockholders	$ 287	$ (420)	$ 481	$ (551)