OPERATING SEGMENTS - Geographic Revenues (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenues	$ 19,423	$ 17,346	$ 16,699	$ 14,486	$ 16,828	$ 14,470	$ 14,127	$ 12,675	$ 67,954	$ 58,100	$ 56,469
U.S.
Segment Reporting Information [Line Items]
Revenues									29,090	24,964	25,607
Europe
Segment Reporting Information [Line Items]
Revenues									15,650	12,587	11,244
China region
Segment Reporting Information [Line Items]
Revenues									3,900	3,537	4,044
Asia (excluding China region)
Segment Reporting Information [Line Items]
Revenues									6,969	6,098	5,762
Americas
Segment Reporting Information [Line Items]
Revenues									5,034	4,750	3,553
Middle East and Africa
Segment Reporting Information [Line Items]
Revenues									7,310	6,164	6,259
Non-U.S.
Segment Reporting Information [Line Items]
Revenues									$ 38,863	$ 33,136	$ 30,862
Non-U.S. | Revenue benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)									57.00%	57.00%	55.00%
Aerospace
Segment Reporting Information [Line Items]
Revenues									$ 31,062	$ 25,390	$ 20,274
Renewable Energy
Segment Reporting Information [Line Items]
Revenues									14,974	12,896	15,559
Power
Segment Reporting Information [Line Items]
Revenues									17,551	15,995	16,558
Operating segments
Segment Reporting Information [Line Items]
Revenues									64,551	55,289	53,910
Operating segments | Aerospace
Segment Reporting Information [Line Items]
Revenues									31,770	26,050	21,310
Operating segments | Aerospace | U.S.
Segment Reporting Information [Line Items]
Revenues									13,486
Operating segments | Aerospace | Europe
Segment Reporting Information [Line Items]
Revenues									7,225
Operating segments | Aerospace | China region
Segment Reporting Information [Line Items]
Revenues									2,607
Operating segments | Aerospace | Asia (excluding China region)
Segment Reporting Information [Line Items]
Revenues									3,195
Operating segments | Aerospace | Americas
Segment Reporting Information [Line Items]
Revenues									1,865
Operating segments | Aerospace | Middle East and Africa
Segment Reporting Information [Line Items]
Revenues									3,393
Operating segments | Aerospace | Non-U.S.
Segment Reporting Information [Line Items]
Revenues									$ 18,285
Operating segments | Aerospace | Non-U.S. | Revenue benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)									58.00%
Operating segments | Renewable Energy
Segment Reporting Information [Line Items]
Revenues									$ 15,050	12,977	15,697
Operating segments | Renewable Energy | U.S.
Segment Reporting Information [Line Items]
Revenues									6,327
Operating segments | Renewable Energy | Europe
Segment Reporting Information [Line Items]
Revenues									4,099
Operating segments | Renewable Energy | China region
Segment Reporting Information [Line Items]
Revenues									214
Operating segments | Renewable Energy | Asia (excluding China region)
Segment Reporting Information [Line Items]
Revenues									1,874
Operating segments | Renewable Energy | Americas
Segment Reporting Information [Line Items]
Revenues									1,579
Operating segments | Renewable Energy | Middle East and Africa
Segment Reporting Information [Line Items]
Revenues									958
Operating segments | Renewable Energy | Non-U.S.
Segment Reporting Information [Line Items]
Revenues									$ 8,723
Operating segments | Renewable Energy | Non-U.S. | Revenue benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)									58.00%
Operating segments | Power
Segment Reporting Information [Line Items]
Revenues									$ 17,731	16,262	16,903
Operating segments | Power | U.S.
Segment Reporting Information [Line Items]
Revenues									6,008
Operating segments | Power | Europe
Segment Reporting Information [Line Items]
Revenues									4,178
Operating segments | Power | China region
Segment Reporting Information [Line Items]
Revenues									1,081
Operating segments | Power | Asia (excluding China region)
Segment Reporting Information [Line Items]
Revenues									2,002
Operating segments | Power | Americas
Segment Reporting Information [Line Items]
Revenues									1,576
Operating segments | Power | Middle East and Africa
Segment Reporting Information [Line Items]
Revenues									2,885
Operating segments | Power | Non-U.S.
Segment Reporting Information [Line Items]
Revenues									$ 11,722
Operating segments | Power | Non-U.S. | Revenue benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)									66.00%
Corporate
Segment Reporting Information [Line Items]
Revenues									$ 3,403	$ 2,812	$ 2,559
Corporate | U.S.
Segment Reporting Information [Line Items]
Revenues									3,270
Corporate | Europe
Segment Reporting Information [Line Items]
Revenues									148
Corporate | China region
Segment Reporting Information [Line Items]
Revenues									(2)
Corporate | Asia (excluding China region)
Segment Reporting Information [Line Items]
Revenues									(102)
Corporate | Americas
Segment Reporting Information [Line Items]
Revenues									14
Corporate | Middle East and Africa
Segment Reporting Information [Line Items]
Revenues									75
Corporate | Non-U.S.
Segment Reporting Information [Line Items]
Revenues									$ 133