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ACQUISITIONS ACQUISITIONS AND DIVESTITURES (Acquisition of Univation) (Details) - USD ($)
$ in Millions
12 Months Ended
May 05, 2015
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Business Acquisition [Line Items]        
Equity Method Investments   $ 3,742 $ 3,747  
Univation Technologies, LLC [Member]        
Business Acquisition [Line Items]        
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain $ 361 $ 0 $ 0 $ 361
Univation Technologies, LLC [Member]        
Business Acquisition [Line Items]        
Equity Method Investments $ 159      
Equity Method Investment, Ownership Percentage 50.00%