Divestitures and Other Transactions (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		12 Months Ended	15 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Jan. 30, 2017	Apr. 30, 2017	Jan. 30, 2016	Dec. 31, 2015	Jun. 23, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of entity	$ 369
Gain on sale of entity, after-tax	$ 214
Ownership interest in an entity	100.00%
Chemours shares distributed to DD stockholders							1
Shares of DD stock converted							5
Common stock, par value	$ 0.30					$ 0.30	$ 0.30
Separation related transaction costs	$ 7	$ 81
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Separation related transaction costs	7	69
Corporate Expenses [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Separation related transaction costs		12
Corporate Expenses [Member] | Continuing Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Separation related transaction costs		$ 12
Chemours [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Common stock, par value							$ 0.01
Prepayment to Chemours for goods and services	168				$ 190
Accounts and Notes Receivable [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification assets	94
Other Assets [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification assets	384
Other Accrued Liabilities [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnified liabilities	94
Other Liabilities [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnified liabilities	$ 384
Maximum [Member] | Scenario, Forecast [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Period of goods and services related to prepayment to Chemours				15 months
Minimum [Member] | Scenario, Forecast [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Period of goods and services related to prepayment to Chemours			12 months