VALUATION AND QUALIFYING ACCOUNTS (Schedule of Valuation and Qualifying Accounts) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disposal Group, Disposed of by Sale, Not Discontinued Operations | AgroFresh | AgroFresh
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Impairment charge			$ 143
Accounts Receivable - Allowance for Doubtful Receivables
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	$ 117	$ 110	94
Additions charged to expenses	23	33	31
Additions charged to other accounts	4	3	0
Deductions from reserves	(38)	(29)	(15)
Balance at end of year	106	117	110
Inventory - Obsolescence Reserve
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	115	123	152
Additions charged to expenses	87	40	29
Deductions from reserves	(55)	(48)	(58)
Balance at end of year	147	115	123
Reserves for Other Investments and Noncurrent Receivables
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	437	358	494
Additions charged to expenses	44	83	153
Deductions from reserves	(16)	(4)	(289)
Balance at end of year	465	437	358
Reserves for Other Investments and Noncurrent Receivables | Dow Silicones Corporation
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Deductions from reserves			(237)
Deferred Tax Assets - Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	1,371	1,061	1,000
Additions charged to expenses	161	370	155
Deductions from reserves	(212)	(60)	(94)
Balance at end of year	$ 1,320	$ 1,371	$ 1,061