Income Taxes Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Operating Loss Carryforwards	$ 1,258		$ 972
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals	200		190
Deferred Tax Assets, Tax Credit Carryforwards	102		102
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits	34		52
Deferred Tax Assets, Inventory	75		64
Deferred Tax Assets, Other	252		267
Deferred Tax Assets, Valuation Allowance	1,738	$ 526	868
Deferred Tax Assets, Net of Valuation Allowance	183		779
Deferred Tax Liabilities, Property, Plant and Equipment	13		53
Deferred Tax Liabilities, Goodwill and Intangible Assets	212		209
Deferred Tax Liabilities, Tax Deferred Income	9		21
Deferred Tax Liabilities, Undistributed Foreign Earnings	0		179
Deferred Tax Liabilities, Other	25		12
Deferred Tax Liabilities, Gross	259		474
Deferred Tax Liabilities, Net	$ (76)
Deferred Tax Assets, Net			$ 305