Property (Details) - USD ($) $ in Millions	1 Months Ended	2 Months Ended	3 Months Ended	8 Months Ended	9 Months Ended
	Sep. 30, 2017	Aug. 31, 2017	Sep. 30, 2016	Aug. 31, 2017	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Successor
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 12,023				$ 12,023
Accumulated depreciation	(121)				(121)
Property, Plant and Equipment, Net	11,902				11,902
Depreciation expense	111
Successor | Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	941				941
Successor | Building [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	2,558				2,558
Successor | Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	7,559				7,559
Successor | Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 965				965
Predecessor
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross							$ 23,015
Accumulated depreciation							(14,164)
Property, Plant and Equipment, Net							8,851
Depreciation expense		$ 143	$ 226	$ 589		$ 683
Predecessor | Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross							501
Predecessor | Building [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross							4,224
Predecessor | Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross							16,909
Predecessor | Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross							$ 1,381
Merger with Dow [Domain]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Additions					$ 3,051
Minimum [Member] | Equipment and Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	1 year
Minimum [Member] | Computer Software, Intangible Asset [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	1 year
Maximum [Member] | Equipment and Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	25 years
Maximum [Member] | Computer Software, Intangible Asset [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	8 years