SEPARATION FROM DOWDUPONT Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Net sales	$ 10,204	$ 10,764	$ 11,014	$ 10,969	$ 11,944	$ 12,634	$ 12,789	$ 12,237	$ 42,951	$ 49,604	$ 43,730
Cost of sales	8,718	9,377	9,420	9,142	10,098	10,456	10,540	9,980	36,657	41,074	36,350
Research and development expenses									765	800	803
Selling, general and administrative expenses									1,590	1,782	1,795
Amortization of intangibles									419	469	400
Restructuring, goodwill impairment and asset related charges - net	2,851	147	65	156	46	48	40	87	3,219	221	2,739
Integration and separation costs 2	99	164	348	452	380	313	262	224	1,063	1,179	798
Equity in earnings (losses) of nonconsolidated affiliates									(94)	555	394
Sundry income (expense) - net									461	96	(154)
Interest income									81	82	66
Interest expense and amortization of debt discount									933	1,063	914
Provision for income taxes on continuing operations									470	809	1,524
Income from discontinued operations, net of tax	0	$ 0	$ 0	$ 445	432	$ 335	$ 554	$ 514	445	1,835	1,882
Consolidated Balance Sheet [Abstract]
Trade (net of allowance for doubtful receivables - 2019: $45; 2018: $42)	4,844				5,646				4,844	5,646
Other	2,711				3,389				2,711	3,389
Inventories	6,214				6,899				6,214	6,899
Other current assets	658				712				658	712
Investment in nonconsolidated affiliates	1,404				3,320				1,404	3,320	3,107
Other investments	2,588				2,646				2,588	2,646
Noncurrent receivables	1,063				360				1,063	360
Net property	20,996				21,418				20,996	21,418	21,584
Goodwill	8,796				9,846				8,796	9,846	9,833
Other intangible assets	3,759				4,225				3,759	4,225
Deferred income tax assets	2,213				1,779				2,213	1,779
Deferred charges and other assets	818				735				818	735
Total Assets	60,524				83,699				60,524	83,699
Notes payable	586				298				586	298
Long-term debt due within one year	435				338				435	338
Trade	3,889				4,456				3,889	4,456
Other	2,064				2,479				2,064	2,479
Income taxes payable	522				557				522	557
Accrued and other current liabilities	2,762				2,931				2,762	2,931
Long-term debt	15,975				19,253				15,975	19,253
Deferred income tax liabilities	347				501				347	501
Pension and other postretirement benefits - noncurrent	10,083				8,926				10,083	8,926
Other noncurrent obligations	$ 6,547				4,709				6,547	4,709
Discontinued Operations [Member]
Income Statement [Abstract]
Net sales									2,953	12,187	12,337
Cost of sales									1,804	7,668	7,769
Research and development expenses									175	761	854
Selling, general and administrative expenses									262	1,108	1,143
Amortization of intangibles									61	249	255
Restructuring, goodwill impairment and asset related charges - net									78	411	376
Integration and separation costs 2									0	0	18
Equity in earnings (losses) of nonconsolidated affiliates									28	400	372
Sundry income (expense) - net									(18)	(13)	245
Interest income									3	26	40
Interest expense and amortization of debt discount									7	56	61
Income (loss) from discontinued operations before income taxes									579	2,347	2,518
Provision for income taxes on continuing operations									134	512	636
Income from discontinued operations, net of tax									$ 445	1,835	$ 1,882
Consolidated Balance Sheet [Abstract]
Trade (net of allowance for doubtful receivables - 2019: $45; 2018: $42)					2,768					2,768
Other					773					773
Inventories					2,826					2,826
Other current assets					151					151
Investment in nonconsolidated affiliates					612					612
Other investments					2					2
Noncurrent receivables					35					35
Net property					3,014					3,014
Goodwill					7,590					7,590
Other intangible assets					1,830					1,830
Deferred income tax assets					239					239
Deferred charges and other assets					60					60
Total Assets					19,900					19,900
Notes payable					7					7
Long-term debt due within one year					4					4
Trade					1,118					1,118
Other					868					868
Income taxes payable					234					234
Accrued and other current liabilities					716					716
Long-term debt					5					5
Deferred income tax liabilities					568					568
Pension and other postretirement benefits - noncurrent					306					306
Other noncurrent obligations					662					662
Liabilities					$ 4,488					$ 4,488