GOODWILL AND OTHER INTANGIBLE ASSETS (Schedule of Amortization Expense of Intangible Assets) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Amortization expense, other intangible assets, excluding software		$ 624	$ 544	$ 419
DowDuPont Cost Synergy Program [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		69
In-process research and development (IPR&D) | DowDuPont Cost Synergy Program [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		11
In-process research and development (IPR&D) | 2016 Restructuring [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 11
Other
Finite-Lived Intangible Assets [Line Items]
Amortization expense, other intangible assets, excluding software		624	544	419
Software
Finite-Lived Intangible Assets [Line Items]
Amortization expense, other intangible assets, excluding software		$ 87	$ 73	$ 72