Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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COMMITMENTS AND CONTINGENT LIABILITIES (Bayer Arbitration Matter) (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2015	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Bayer CropScience v. Dow AgroSciences
Loss Contingencies [Line Items]
Litigation settlement				$ 0	$ (469)	$ 0
Bayer CropScience v. Dow AgroSciences \| Dow Agrosciences LLC
Loss Contingencies [Line Items]
Damages awarded			$ 455
Litigation settlement		$ (469)
Payments for legal settlements	$ 469