EARNINGS PER SHARE CALCULATIONS (Earnings Per Share Calculation - Diluted) (Details) - $ / shares		3 Months Ended			6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014		Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Net income attributable to The Dow Chemical Company, diluted		$ 0.97	$ 0.81		$ 2.16	$ 1.67
Preferred stock dividends, diluted		(0.00)	(0.07)	[1]	(0.00)	(0.14)	[1]
Net income attributable to participating securities, diluted	[2]	(0.00)	(0.01)		(0.01)	(0.01)
Earnings per common share - diluted		$ 0.97	$ 0.73		$ 2.15	$ 1.52

[1] Preferred stock dividends were not added back in the calculation of diluted earnings per share for the three- and six-month periods ended June 30, 2014, because the effect of adding them back would have been antidilutive.

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