COMMITMENTS AND CONTINGENT LIABILITES (Dow Silicones Chapter 11 Related Matters) (Details) (Details) - Dow Silicones Corporation [Member] - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 01, 2016
Product Liability Contingency [Line Items]
Business Combination, Indemnification Assets, Percentage of Future Losses			50.00%
Indemnification Asset	$ 100	$ 100
Breast Implant and Other Products Liability Claims [Member]
Product Liability Contingency [Line Items]
Product Liability Contingency, Payments Incurred To Date	1,762
Product Liability Contingency, Unexpended Balance	69
Loss Contingency Accrual, Product Liability, Net	160	165
Accrued and Other Current Liabilities [Member] | Breast Implant and Other Products Liability Claims [Member]
Product Liability Contingency [Line Items]
Loss Contingency Accrual, Product Liability, Net	0	20
Other Noncurrent Obligations [Member] | Breast Implant and Other Products Liability Claims [Member]
Product Liability Contingency [Line Items]
Loss Contingency Accrual, Product Liability, Net	$ 160	$ 145