RESTRUCTURING CHARGES AND SEPARATION COSTS - Restructuring and Other Charges (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 144	$ 46	$ 305	$ 94
Restructuring and other charges cash expenditures	155	85	293	211
Cost of equipment/services
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	29	16	65	43
SG&A
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	115	29	240	54
Other (income) loss
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	0	0	0	(3)
Operating segments | Aerospace
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	4	5	7	10
Operating segments | Renewable Energy
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	76	6	141	12
Operating segments | Power
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	19	33	39	67
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	46	2	118	5
Workforce reductions
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	92	5	157	19
Plant closures & associated costs and other asset write-downs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	38	24	121	51
Acquisition/disposition net charges and other
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 14	$ 16	$ 27	$ 25