RESTRUCTURING CHARGES AND SEPARATION COSTS - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restructuring Cost and Reserve [Line Items]
Separation costs	$ 978	$ 715	$ 0
Payments for restructuring costs	351	310	$ 570
Separation costs
Restructuring Cost and Reserve [Line Items]
Separation costs	978	715
Payments for restructuring costs	1,059	158
Restructuring, incurred net tax benefit	197	16
Separation costs | Discontinued operations
Restructuring Cost and Reserve [Line Items]
Separation costs	22	258
Payments for restructuring costs	182	103
Restructuring, incurred net tax benefit	$ 5	$ 54