Condensed Consolidated Statements of Comprehensive Income (Loss) (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 255	$ 301	$ 328	$ 601
Other comprehensive income (loss), net of tax:
Currency translation adjustments, net of tax expense (benefit) of $2 and $(4) for the three months ended June 30, 2022 and 2021, respectively, and ($9) and $13 for the six months ended June 30, 2022 and 2021, respectively.	(417)	88	(432)	(120)
Pension and other postretirement benefits, net of tax expense of $5 and $3 for the three months ended June 30, 2022 and 2021, respectively, and $8 and $11 for the six months ended June 30, 2022 and 2021, respectively.	23	11	32	41
Hedging activities, net of tax expense of $4 and $2 for the three months ended June 30, 2022 and 2021, respectively, and $3 and $5 for the six months ended June 30, 2022 and 2021, respectively.	13	5	11	17
Available-for-sale debt securities, net of tax expense of zero for the three months ended June 30, 2022 and 2021, respectively, and $1 and zero for the six months ended June 30, 2022 and 2021, respectively.	1	0	2	0
Total other comprehensive income (loss), net of tax	(380)	104	(387)	(62)
Comprehensive income (loss)	(125)	405	(59)	539
Less: Comprehensive income attributable to noncontrolling interests	3	3	5	5
Comprehensive income (loss) attributable to Baxter stockholders	$ (128)	$ 402	$ (64)	$ 534