COMMITMENTS AND CONTINGENCIES (Dow Silicones Chapter 11 Related Matters) (Details) - USD ($) $ in Millions			3 Months Ended	12 Months Ended
	Jun. 01, 2016	Jun. 01, 2004	Sep. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Commercial Creditors Litigation
Loss Contingencies [Line Items]
Decrease in liability				$ 0	$ 0	$ (50)
Dow Silicones Corporation
Loss Contingencies [Line Items]
Indemnification asset				95	115
Indemnification percentage	50.00%
Dow Silicones Corporation | Between May 31, 2018 and May 31, 2023
Loss Contingencies [Line Items]
Indemnification loss cap	$ 1,000
Dow Silicones Corporation | After May 31, 2023
Loss Contingencies [Line Items]
Indemnification loss cap	$ 0
Dow Silicones Corporation | Commercial Creditors Litigation
Loss Contingencies [Line Items]
Decrease in liability			$ (50)
Payments for legal settlements		$ 1,500
Indemnification asset			37
Dow Silicones Corporation | Accrued and Other Current Liabilities [Member] | Commercial Creditors Litigation
Loss Contingencies [Line Items]
Estimated litigation liability			172
Dow Silicones Corporation | Breast Implant and Other Products Liability Claims
Loss Contingencies [Line Items]
Maximum net present value		$ 2,350
Discount rate		7.00%
Undiscounted product liability				4,081
Portion available to fund the Litigation Facility		$ 400
Payments for product liabilities				1,792
Product liability				$ 130	$ 160
Decrease in liability			98
Class 16 receivable [Member] | Dow Silicones Corporation | Breast Implant and Other Products Liability Claims
Loss Contingencies [Line Items]
Decrease in liability			$ (13)