NONCONSOLIDATED AFFILIATES (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Investment in nonconsolidated affiliates	$ 1,235	$ 1,404
Equity Method Investment, Liability, Noncurrent	(317)	(80)
Equity Method Investment, Net of Investment Liabilities	918	1,324
Accounts and notes receivable - Other	2,770	2,711
The Kuwait Styrene Company K.S.C.C. [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Equity Method Investment, Distribution	42
EQUATE Petrochemical Company Ksc and The Kuwait Olefins Company K.S.C.C. [Member]
Schedule of Equity Method Investments [Line Items]
Accounts and notes receivable - Other	276
EQUATE Petrochemical Company Ksc [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Liability, Noncurrent	225	80
Sadara Chemical Company [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Liability, Noncurrent	$ 92	$ 0