Divestitures and Other Transactions Divestitures and Other Transactions - SP Divestiture (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification Assets		$ 204		$ 204
Goodwill impairment charge		0	$ 4,503	0	$ 4,503
Income (loss) from discontinued operations after income taxes		22	526	(695)	1,200
Equity Method Investment, Other than Temporary Impairment			41		41
Cash and cash equivalents		0	1,965	0	1,965	$ 2,254
Assets of discontinued operations - current		0	9,055	0	9,055	9,089	[1]
Investments in nonconsolidated affiliates		70	144	70	144	138
Assets of discontinued operations - non-current		0	57,185	0	57,185	56,545
Total assets of discontinued operations	[2]	0	66,240	0	66,240	65,634
Liabilities of discontinued operations - current		0	2,888	0	2,888	3,167	[1]
Liabilities of discontinued operations - non-current		0	5,532	0	5,532	5,484
Specialty Products Disposal [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales			3,912	5,030	11,922
Cost of goods sold			2,599	3,352	7,985
Research and development expense			150	204	467
Selling, general and administrative expenses			381	573	1,199
Amortization of intangibles			201	267	616
Restructuring and asset related charges - net			9	115	93
Integration and separation costs			80	253	203
Goodwill impairment charge			0	1,102	0
Other income - net			27	38	162
Income (loss) from discontinued operations before income taxes			519	(798)	1,521
Provision for income taxes on discontinued operations			8	82	451
Income (loss) from discontinued operations after income taxes		22	511	(880)	1,070
Equity Method Investment, Other than Temporary Impairment				63
Depreciation			208	281	636
Capital expenditures			214	481	627
Cash and cash equivalents			1,957		1,957	2,199
Marketable securities			122		122	29
Accounts and notes receivable - net			2,597		2,597	2,441
Inventories			3,433		3,433	3,452
Other current assets			260		260	242
Assets of discontinued operations - current			8,369		8,369	8,363
Investment in nonconsolidated affiliates			1,220		1,220	1,185
Property, plant and equipment - net			7,966		7,966	8,138
Goodwill			28,532		28,532	28,250
Other intangible assets			13,330		13,330	13,037
Deferred income taxes			190		190	122
Other assets			255		255	191
Assets of discontinued operations - non-current			51,493		51,493	50,923
Total assets of discontinued operations			59,862		59,862	59,286
Short-term borrowings and finance lease obligations			4		4	15
Accounts payable			1,837		1,837	1,983
Income taxes payable			31		31	33
Accrued and other current liabilities			821		821	884
Liabilities of discontinued operations - current			2,693		2,693	2,915
Deferred Income tax liabilities			3,729		3,729	3,624
Pension and other post employment benefits - noncurrent			1,013		1,013	1,125
Other noncurrent obligations			272		272	262
Liabilities of discontinued operations - non-current			5,025		5,025	5,040
Total liabilities of discontinued operations			7,718		7,718	7,955
Industrial Biosciences [Member] | Specialty Products Disposal [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill impairment charge				1,102
Long-term Debt [Member] | Specialty Products Disposal [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Long-Term Debt			$ 11		$ 11	$ 29
Other noncurrent obligations | DuPont de Nemours [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnified Liabilities		71		71
Other noncurrent obligations | Dow [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnified Liabilities		109		109
Other Assets [Member] | DuPont de Nemours [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification Assets		57		57
Other Assets [Member] | Dow [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification Assets		1		1
Accrued and Other Current Liabilities [Member] | DuPont de Nemours [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnified Liabilities		15		15
Accrued and Other Current Liabilities [Member] | Dow [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnified Liabilities		87		87
Accounts and Notes Receivable [Member] | DuPont de Nemours [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification Assets		36		36
Accounts and Notes Receivable [Member] | Dow [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification Assets		$ 43		$ 43

[1] Includes adjustments for discontinued operations and common control business combination.

[2] See Note 5 - Divestitures and Other Transactions for additional information on discontinued operations.