RESTRUCTURING CHARGES AND SEPARATION COSTS - Changes in Restructuring Liability (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Restructuring Reserve [Roll Forward]
Beginning balance	$ 977	$ 825
Additions	86	9
Payments	(87)	(115)
Effect of foreign currency and other	0	(9)
Ending balance	976	710
Restructuring reserve	976	710
Discontinued operations
Restructuring Reserve [Roll Forward]
Ending balance	64
Restructuring reserve	64
Post-employment severance benefits
Restructuring Reserve [Roll Forward]
Ending balance	353	322
Restructuring reserve	$ 353	$ 322