Divestitures and Other Transactions Divestitures and Other Transactions - Divested Ag Business Depreciation and Capital Expenditures (Details) - Predecessor [Member] - Divested Ag Business [Member] - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation, Discontinued Operations	$ 8	$ 16
Capital Expenditures, Discontinued Operations	$ 4	$ 8