ACQUISITIONS, GOODWILL AND OTHER INTANGIBLE ASSETS - Unaudited Actual and Pro Forma Information (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Baker Hughes
Business Acquisition [Line Items]
Non-recurring contractually obligated termination fee		$ 3,500
Non-recurring contractually obligated termination fee, net of related costs incurred		$ 3,301
BHGE
Business Acquisition [Line Items]
Revenues and other income related to the Baker Hughes contributed business	$ 5,203
Loss from continuing operations related to the Baker Hughes contributed business	$ (709)