Divestitures and Other Transactions Divestitures and Other Transactions - PChem Results of Operations (Details) - Predecessor [Member] - USD ($) $ in Millions	8 Months Ended	12 Months Ended
	Aug. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
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	$ 512
Performance Chemicals [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net Sales, Discontinued Operations	0	0	2,810
Cost of Goods Sold, Discontinued Operations	0	0	2,215
Other Operating Charges, Discontinued Operations	335	36	386
Research and Development Expense, Discontinued Operations	0	0	40
Selling, General and Administrative, Discontinued Operations	0	0	(87)
Restructuring and Asset Related Charges - Net, Discontinued Operations	0	0	59
Sundry Income (Expense) - Net, Discontinued Operations	3	3	27
Interest Expense, Discontinued Operations	0	0	32
(Loss) Income from Discontinued Operation, before Income Taxes	(332)	(33)	192
(Benefit from) Provision for Income Taxes, Discontinued Operation	(125)	(28)	106
(Loss) Income from discontinued operations after income taxes	$ (207)	$ (5)	$ 86