Common Control Transfer DAS Common Control Income Statement (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Business Acquisition [Line Items]
Net Sales		$ 5,556	$ 3,396	$ 5,731	$ 8,952	$ 9,525
Income (loss) from continuing operations before income taxes		753	(251)	308	502	(242)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest		$ 483	(184)	375	$ 299	(63)
Historical EID [Member]
Business Acquisition [Line Items]
Net Sales			6,288	8,545		15,244
Income (loss) from continuing operations before income taxes			49	655		466
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest			89	514		298
Discontinued Operations and Other Adjustments [Member]
Business Acquisition [Line Items]
Net Sales	[1]		(4,341)	(4,522)		(8,910)
Income (loss) from continuing operations before income taxes	[1]		(476)	(587)		(1,133)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	[1]		(369)	(310)		(665)
DAS [Member]
Business Acquisition [Line Items]
Net Sales			1,449	1,708		3,191
Income (loss) from continuing operations before income taxes			176	240		425
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest			$ 96	$ 171		$ 304

[1] Reflects discontinued operations of EID's ECP and Specialty Products businesses and adjustments primarily related to the elimination of intercompany transactions between Historical EID and Dow AgroSciences for periods subsequent to the Merger, as if they were combined affiliates.