PROPERTY, PLANT AND EQUIPMENT - Property, Plant and Equipment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Original cost	$ 76,885		$ 76,885		$ 75,187
Less accumulated depreciation and amortization	(34,675)		(34,675)		(31,897)
Property, plant and equipment – net	42,211		42,211		$ 43,290
Consolidated depreciation and amortization on property, plant and equipment	1,374	$ 1,004	3,655	$ 2,969
Operating lease income	844	935	2,515	2,885
Fixed lease income	713	757	2,132	2,296
Variable lease income	$ 131	179	$ 384	589
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilities		us-gaap:OtherLiabilities
Capital | GECAS | Aircraft and engines leased to others
Property, Plant and Equipment [Line Items]
Pre-tax impairment charges	$ 160	$ 28	$ 497	$ 57
Power
Property, Plant and Equipment [Line Items]
Pre-tax impairment charges	$ 316