DIVESTITURES Material Sciences Components of Income (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations, net of tax		$ 0	$ 5	$ 0	$ 1,217
Income (Loss) from Discontinued Operations, Attributable to Noncontrolling Interests, Net of Tax		$ 0	0	$ 0	72
Materials Science Division [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net Sales, Discontinued Operation					10,867
Cost of Sales, Discontinued Operations					8,917
Research and Development Expense, Discontinued Operations					163
Selling, General and Administrative Expense, Discontinued Operations					329
Amortization of Intangibles, Discontinued Operations					116
Restructuring and Asset Related Charges - Net, Discontinued Operations					157
Integration and Separation Costs, Discontinued Operations					44
Equity in Earnings on Nonconsolidated Affiliates, Discontinued Operations					(13)
Sundry Income (expense), Discontinued Operations	[1]				17
Interest Expense, Discontinued Operations					240
Income (Loss) from Discontinued Operation, before Income Tax					905
Provision for Income Taxes on Discontinued Operations	[1]				176
Income from discontinued operations, net of tax					729
Income (Loss) from Discontinued Operations, Attributable to Noncontrolling Interests, Net of Tax					37
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent					692
Materials Science Division [Member] | Sundry income (expense) - net
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income Tax Credits and Adjustments			82		82
Materials Science Division [Member] | Provision for income taxes on discontinued operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income Tax Credits and Adjustments			$ 85		$ 85

[1] The three and nine months ended September 30, 2019 includes $82 million of expense in "Sundry income (expense) - net" and a benefit of $85 million in "Provision for income taxes on discontinued operations" related to certain unrecognized tax benefits for positions taken on items from prior years.