EARNINGS PER SHARE CALCULATIONS (Earnings Per Share Calculation - Basic) (Details) - $ / shares		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share [Abstract]
Net income attributable to The Dow Chemical Company, basic		$ 0.74	$ 0.23
Preferred stock dividends, basic	[1]	(0.00)	(0.08)
Net income attributable to participating securities	[2]	(0.00)	(0.00)
Net income attributable to common stockholders, basic		$ 0.74	$ 0.15

[1] On December 30, 2016, the Company converted its outstanding shares of Cumulative Convertible Perpetual Preferred Stock, Series A ("Preferred Stock") into shares of the Company's common stock.

[2] Deferred stock awards are considered participating securities due to Dow's practice of paying dividend equivalents on unvested shares.