EARNINGS PER SHARE CALCULATIONS (Net Income) (Details) - USD ($) $ in Millions		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		$ 3,208	$ 1,220	$ 3,462	$ 2,698
Preferred stock dividends		(85)	(85)	(170)	(170)
Net income attributable to participating securities	[1]	(18)	(7)	(19)	(17)
Net income attributable to common stockholders		3,105	1,128	3,273	2,511
Net income attributable to participating securities, Diluted	[1]	(18)	(7)	(19)	(17)
Net income attributable to common stockholders, Diluted		$ 3,190	$ 1,213	$ 3,443	$ 2,681

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