RESTRUCTURING - Roll Forward of Restructuring Liability (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 139	$ 173
Restructuring expense, net	15	30
Cash payments	(50)	(66)
Foreign currency translation adjustment and other	0
Restructuring reserve, ending balance	104	137
Less: Non-current restructuring liability	27	51
Current restructuring liability	77	86
Employee Termination Benefits
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	126	160
Restructuring expense, net	8	21
Cash payments	(38)	(54)
Foreign currency translation adjustment and other	(3)
Restructuring reserve, ending balance	93	127
Less: Non-current restructuring liability	25	48
Current restructuring liability	68	79
Other
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	13	13
Restructuring expense, net	7	9
Cash payments	(12)	(12)
Foreign currency translation adjustment and other	3
Restructuring reserve, ending balance	11	10
Less: Non-current restructuring liability	2	3
Current restructuring liability	$ 9	$ 7