NONCONSOLIDATED AFFILIATES (Details) - USD ($) $ in Millions	1 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Investment in nonconsolidated affiliates	$ 1,211	$ 1,211	$ 1,404
Equity Method Investment, Liability, Noncurrent	(331)	(331)	(80)
Equity Method Investment, Net of Investment Liabilities	880	880	1,324
Accounts and notes receivable - Other	2,528	2,528	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 [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Liability, Noncurrent	(226)	(226)	(80)
Proceeds from Equity Method Investment, Distribution	94
The Kuwait Olefins Company K.S.C.C. [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Equity Method Investment, Distribution	69
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	109	109
Sadara Chemical Company [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Liability, Noncurrent	$ (105)	$ (105)	$ 0