STOCKHOLDERS' EQUITY (Common Stock) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Apr. 01, 2019	Dec. 31, 2018
Class of Stock [Line Items]
Common stock authorized (in shares)	5,000,000,000
Common Stock, Par or Stated Value Per Share	$ 0.01
Common stock issued (in shares)	764,226,882	755,993,198
Non-Employee Directors | Common Stock
Class of Stock [Line Items]
Stock Issued During Period, Shares, Employee Stock Purchase Plans	8,200,000	4,800,000	2,500,000
Dow Inc. [Member]
Class of Stock [Line Items]
Common stock authorized (in shares)				5,000,000,000	100
Common Stock, Par or Stated Value Per Share				$ 0.01	$ 0.01
Common stock issued (in shares)				748,771,240	100
The Dow Chemical Company
Class of Stock [Line Items]
Common stock authorized (in shares)	100			100
Common Stock, Par or Stated Value Per Share	$ 0.01			$ 0.01
Common stock issued (in shares)	100