PROPERTY, PLANT AND EQUIPMENT - Property, Plant and Equipment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Original cost	$ 76,137		$ 76,137		$ 75,187
Less accumulated depreciation and amortization	(33,317)		(33,317)		(31,897)
Property, plant and equipment – net	42,821		42,821		$ 43,290
Consolidated depreciation and amortization on property, plant and equipment	1,290	$ 970	2,281	$ 1,965
Operating lease income	795	1,017	1,672	1,949
Fixed lease income	714	774	1,419	1,539
Variable lease income	$ 82	$ 243	$ 253	$ 411
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	$ 292		$ 337