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MERGER WITH HISTORICAL DUPONT AND BUSINESS SEPARATION (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Mar. 31, 2019
Feb. 15, 2019
Dec. 31, 2018
Dow International Holdings Company [Member]        
Related Party Transaction [Line Items]        
Common Stock, Related Company     1,067  
Ownership Interest Percentage, Related Company 5.00% 4.70% 11.90% 12.00%
The Dow Chemical Company [Member]        
Related Party Transaction [Line Items]        
Dividends, Paid-in-kind $ 71      
The Dow Chemical Company [Member] | Dow International Holdings Company [Member]        
Related Party Transaction [Line Items]        
Ownership Interest Percentage, Related Company     88.10%  
Dividends, Common Stock, Stock $ 401