GOODWILL AND OTHER INTANGIBLE ASSETS - Goodwill, Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Goodwill	$ 26,598	$ 26,734
Operating Segments | Aviation
Goodwill [Line Items]
Goodwill	9,818	9,859
Operating Segments | Aviation | Additive Reporting Unit
Goodwill [Line Items]
Goodwill	1,091
Operating Segments | Capital
Goodwill [Line Items]
Goodwill	839	839
Operating Segments | Capital | GECAS
Goodwill [Line Items]
Goodwill	839
Corporate
Goodwill [Line Items]
Goodwill	869	$ 873
Corporate | Grid Solutions Reporting Unit
Goodwill [Line Items]
Goodwill	$ 869