NONCONSOLIDATED AFFILIATES (Schedule of the Company's Direct or Indirect Ownership Interest in Principal Nonconsolidated Affiliates) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) jointventures	Dec. 31, 2020 USD ($) jointventures	Dec. 31, 2019 USD ($)
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Interest, Number of Affiliates | jointventures	37	35
Investment in nonconsolidated affiliates	$ 2,045	$ 1,327	$ 1,404
Other noncurrent obligations	0	(169)
Net investment in nonconsolidated affiliates	2,045	1,158
Equity in earnings (losses) of nonconsolidated affiliates	975	(18)	(94)
Principal Nonconsolidated Affiliates
Schedule of Equity Method Investments [Line Items]
Investment in nonconsolidated affiliates	1,621	922
Other noncurrent obligations	0	(169)
Net investment in nonconsolidated affiliates	1,621	753
Equity in earnings (losses) of nonconsolidated affiliates	$ 918	$ (16)	$ 21
EQUATE Petrochemical Company K.S.C.
Schedule of Equity Method Investments [Line Items]
Ownership percentage	42.50%	42.50%	42.50%
Investment in nonconsolidated affiliates	$ 115
Other noncurrent obligations		$ 147
The Kuwait Olefins Company K.S.C.
Schedule of Equity Method Investments [Line Items]
Ownership percentage	42.50%	42.50%	42.50%
The Kuwait Styrene Company KSC
Schedule of Equity Method Investments [Line Items]
Ownership percentage	42.50%	42.50%	42.50%
Map Ta Phut Olefins Company
Schedule of Equity Method Investments [Line Items]
Ownership percentage	32.77%	32.77%	32.77%
Equity Method Investment, Ownership Percentage, Direct	20.27%
Equity Method Investment, Ownership Percentage, Indirect	12.50%
Sadara Chemical Company
Schedule of Equity Method Investments [Line Items]
Ownership percentage	35.00%	35.00%	35.00%
Investment in nonconsolidated affiliates	$ 416
Other noncurrent obligations		$ 22
Siam Polyethylene Company Limited
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%	50.00%	50.00%
Siam Polystyrene Company Limited
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%	50.00%	50.00%
Siam Styrene Monomer Company Limited
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%	50.00%	50.00%
Siam Synthetic Latex Company Limited
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%	50.00%	50.00%