OTHER INCOME (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total	$ 2,078	$ 164	$ 8,947	$ 1,012
Pre-tax unrealized gain (loss)	1,929	(51)	(3,843)	(42)
BioPharma
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pretax gain on sale			12,341
ServiceMax
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pretax gain on sale				223
GE
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Purchases and sales of business interests	52	(39)	12,424	214
Sales	31	80	73	120
Associated companies	31	82	69	121
Net interest and investment income	1,955	23	(3,677)	160
Other items	48	26	101	410
Total	2,116	172	8,990	1,024
Eliminations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total	(38)	$ (8)	(43)	$ (13)
Baker Hughes
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax unrealized gain (loss)	$ 1,846		$ (3,865)