Divestitures and Other Transactions Divestitures and Other Transactions - Divested Ag Business Results of Operations (Details) - USD ($) $ in Millions		1 Months Ended		2 Months Ended		3 Months Ended							4 Months Ended		8 Months Ended		12 Months Ended
		Sep. 30, 2017	[1]	Aug. 31, 2017	[1]	Mar. 31, 2018	Dec. 31, 2017	[1]	Jun. 30, 2017	[1]	Mar. 31, 2017	[1]	Dec. 31, 2017		Aug. 31, 2017		Dec. 31, 2018	Dec. 31, 2016
Successor [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) income from discontinued operations after income taxes													$ (77)				$ (5)
Successor [Member] | Divested Ag Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Transaction Costs													44
Net Sales, Discontinued Operations	[1]												199
Cost of Goods Sold, Discontinued Operations	[1]												194
Other Operating Charges, Discontinued Operations	[1]
Research and Development Expense, Discontinued Operations	[1]												30
Selling, General and Administrative, Discontinued Operations	[1],[2]												102
Restructuring and Asset Related Charges - Net, Discontinued Operations	[1]												(1)
Sundry (Expense) Income - Net, Discontinued Operations	[1]												(1)
(Loss) Income from Discontinued Operation, before Income Taxes													(127)	[1]			(10)
(Benefit from) Provision for Income Taxes, Discontinued Operation	[1]												(50)
(Loss) income from discontinued operations after income taxes		$ (20)				$ 5	$ (57)						$ (77)	[1]			$ (5)
Predecessor [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) income from discontinued operations after income taxes															$ 119			$ 443
Predecessor [Member] | Divested Ag Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net Sales, Discontinued Operations															1,068	[1]		1,385
Cost of Goods Sold, Discontinued Operations															412	[1]		514
Other Operating Charges, Discontinued Operations															17	[1]		19
Research and Development Expense, Discontinued Operations															95	[1]		139
Selling, General and Administrative, Discontinued Operations															146	[1],[2]		176
Restructuring and Asset Related Charges - Net, Discontinued Operations															0	[1]		(4)
Sundry (Expense) Income - Net, Discontinued Operations															7	[1]		1
(Loss) Income from Discontinued Operation, before Income Taxes															405	[1]		542
(Benefit from) Provision for Income Taxes, Discontinued Operation															79	[1]		103
(Loss) income from discontinued operations after income taxes				$ 29					$ 137		$ 160				$ 326	[1]		$ 439

[1] Includes results of operations for the period September 1 through October 31, 2017, as the Divested Ag Business was disposed of on November 1, 2017.

[2] Successor period includes $44 million of transaction costs associated with the disposal of the Divested Ag Business.