STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY - Common Stock (Details) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Class of Stock [Line Items]
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	100	100
Common Stock, Shares, Issued	100	100
Dow Inc. [Member]
Class of Stock [Line Items]
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	5,000,000,000	100
Common Stock, Shares, Issued	748,771,240	100