RESTRUCTURING CHARGES AND SEPARATION COSTS - Changes in Restructuring Liability (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restructuring Reserve [Roll Forward]
Beginning balance	$ 1,026	$ 1,337	$ 1,746
Additions	578	655	860
Payments	(385)	(670)	(997)
Remeasurement	(4)	(245)	(212)
Effect of foreign currency and other	(31)	(52)	(60)
Ending balance	1,183	1,026	1,337
Restructuring reserve	1,183	1,026	1,337
Post-employment severance benefits
Restructuring Reserve [Roll Forward]
Beginning balance	464	722
Ending balance	475	464	722
Restructuring reserve	$ 475	$ 464	$ 722