OTHER ITEMS IMPACTING COMPARABILITY - Summary (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restructuring Cost and Reserve [Line Items]
FMS Europe results	$ 6	$ 0	$ 10
Commercial claims proceeds, net of fees	(31)	(12)	0
Severance and other, net	4	15	0
FMS U.K. exit	(32)	(82)	(27)
Currency translation adjustment loss	188	0	0
ERP Implementation costs	0	0	13
Other, net	1	(1)	4
Other items impacting comparability, net	157	(83)	(10)
UNITED KINGDOM | Trading Revenue
Restructuring Cost and Reserve [Line Items]
Gain on sale	(2)	(49)	0
UNITED KINGDOM | Miscellaneous Income Loss Net
Restructuring Cost and Reserve [Line Items]
Gain on sale	$ (9)	$ (36)	$ (37)