OTHER ITEMS IMPACTING COMPARABILITY - Schedule of Other Items Impacting Comparability (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) segment	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Other Income and Expenses [Abstract]
Acquisition costs	$ 7	$ 2	$ 6
FMS U.K. business exit	0	(32)	(82)
Currency translation adjustment loss	0	188	0
Other, net	6	(1)	(7)
Other items impacting comparability, net	$ 13	$ 157	$ (83)
Number of segments | segment	3