EARNINGS PER SHARE CALCULATIONS (Earnings Per Share Calculation - Diluted) (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, diluted		$ 2.62	$ 0.97	$ 2.84	$ 2.16
Preferred stock dividends, diluted		(0.00)	(0.00)	(0.00)	(0.00)
Net income attributable to participating securities, diluted	[1]	(0.01)	(0.00)	(0.01)	(0.01)
Earnings per common share - diluted		$ 2.61	$ 0.97	$ 2.83	$ 2.15

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