RESTRUCTURING - Roll Forward of Restructuring Liability (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			$ 139	$ 173
Restructuring expense, net	$ 27	$ 62	42	92
Cash payments			(81)	(121)
Foreign currency translation adjustment and other			(3)	0
Restructuring reserve, ending balance	97	144	97	144
Less: Non-current restructuring liability	22	40	22	40
Current restructuring liability	75	104	75	104
Employee Termination Benefits
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			126	160
Restructuring expense, net	22	36	30	57
Cash payments			(64)	(82)
Foreign currency translation adjustment and other			(5)	(1)
Restructuring reserve, ending balance	87	134	87	134
Less: Non-current restructuring liability	21	37	21	37
Current restructuring liability	66	97	66	97
Other
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			13	13
Restructuring expense, net	5	26	12	35
Cash payments			(17)	(39)
Foreign currency translation adjustment and other			2	1
Restructuring reserve, ending balance	10	10	10	10
Less: Non-current restructuring liability	1	3	1	3
Current restructuring liability	$ 9	$ 7	$ 9	$ 7