EARNINGS PER SHARE CALCULATIONS (Earnings Per Share Calculation - Basic) (Details) - $ / shares		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Net income attributable to The Dow Chemical Company, basic		$ 2.88	$ 1.07	$ 3.13	$ 2.37
Preferred stock dividends, basic		(0.07)	(0.08)	(0.15)	(0.15)
Net income attributable to participating securities	[1]	(0.02)	(0.00)	(0.02)	(0.01)
Net income attributable to common stockholders, basic		$ 2.79	$ 0.99	$ 2.96	$ 2.21

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