Divestitures and Other Transactions Divestitures and Other Transactions - Divested Ag Business Assets and Liabilities (Details) - Predecessor [Member] - USD ($) $ in Millions	Aug. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents	$ (31)	$ 15	$ 22
Divested Ag Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents		57
Disposal Group, Including Discontinued Operation, Accounts, Accounts and Notes Receivable, Net		12
Disposal Group, Including Discontinued Operation, Inventories		323
Disposal Group, Including Discontinued Operation, Other Current Assets		1
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Net		380
Disposal Group, Including Discontinued Operation, Goodwill		11
Disposal Group, Including Discontinued Operation, Other Assets		5
Disposal Group, Including Discontinued Operation, Assets		789
Disposal Group, Including Discontinued Operation, Accounts Payable		27
Disposal Group, Including Discontinued Operation, Accrued and Other Current Liabilities		12
Disposal Group, Including Discontinued Operation, Deferred Income Tax Liabilities		6
Disposal Group, Including Discontinued Operation, Other Noncurrent Obligations		29
Disposal Group, Including Discontinued Operation, Liabilities		$ 74