OPERATING SEGMENTS - Segment Revenues (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total revenues	$ 21,786	$ 19,084	$ 18,646	$ 17,040	$ 20,303	$ 18,569	$ 18,253	$ 17,071	$ 76,555	$ 74,196	$ 75,833
Aerospace
Segment Reporting Information [Line Items]
Total revenues									25,390	20,274	20,597
Renewable Energy
Segment Reporting Information [Line Items]
Total revenues									12,896	15,559	15,523
Power
Segment Reporting Information [Line Items]
Total revenues									15,995	16,558	17,237
HealthCare
Segment Reporting Information [Line Items]
Total revenues									18,461	17,724	18,008
Operating segments
Segment Reporting Information [Line Items]
Total revenues									73,749	71,635	73,306
Operating segments | Aerospace
Segment Reporting Information [Line Items]
Total revenues									26,050	21,310	22,042
Operating segments | Renewable Energy
Segment Reporting Information [Line Items]
Total revenues									12,977	15,697	15,666
Operating segments | Power
Segment Reporting Information [Line Items]
Total revenues									16,262	16,903	17,589
Operating segments | HealthCare
Segment Reporting Information [Line Items]
Total revenues									18,461	17,725	18,009
Corporate
Segment Reporting Information [Line Items]
Total revenues									2,806	2,561	2,528
Commercial Engines & Services | Operating segments | Aerospace
Segment Reporting Information [Line Items]
Total revenues									18,665	14,360	14,479
Military | Operating segments | Aerospace
Segment Reporting Information [Line Items]
Total revenues									4,410	4,136	4,572
Systems & Other | Operating segments | Aerospace
Segment Reporting Information [Line Items]
Total revenues									2,975	2,814	2,991
Onshore Wind | Operating segments | Renewable Energy
Segment Reporting Information [Line Items]
Total revenues									8,373	11,026	10,881
Grid Solutions equipment and services | Operating segments | Renewable Energy
Segment Reporting Information [Line Items]
Total revenues									3,086	3,207	3,585
Hydro, Offshore Wind and Hybrid Solutions | Operating segments | Renewable Energy
Segment Reporting Information [Line Items]
Total revenues									1,518	1,464	1,200
Gas Power | Operating segments | Power
Segment Reporting Information [Line Items]
Total revenues									12,072	12,080	12,655
Steam Power | Operating segments | Power
Segment Reporting Information [Line Items]
Total revenues									2,643	3,241	3,557
Power Conversion, Nuclear and other | Operating segments | Power
Segment Reporting Information [Line Items]
Total revenues									1,547	1,582	1,378
Healthcare Systems | Operating segments | HealthCare
Segment Reporting Information [Line Items]
Total revenues									16,489	15,694	15,387
Pharmaceutical Diagnostics | Operating segments | HealthCare
Segment Reporting Information [Line Items]
Total revenues									1,972	2,031	1,792
BioPharma | Operating segments | HealthCare
Segment Reporting Information [Line Items]
Total revenues									$ 0	$ 0	$ 830