Discontinued Operations Reconciliation of Major Classes of Assets and Liabilities of Discontinued Operations (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disposal Group, Including Discontinued Operation, Assets [Abstract]
Cash and cash equivalents	$ 0	$ 101	$ 152
Accounts receivable, net		808
Inventories, net		373
Other Assets, Current		108
Current assets of discontinued operations	0	1,390
Property, net		1,190
Investment in Affiliates		34
Intangible Assets		92
Goodwill		6
Other Assets, Noncurrent		229
Long-term assets of discontinued operations	0	1,551
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]
Accounts Payable		743
Debt, Current		2
Other Liabilities, Current		331
Current liabilities of discontinued operations	0	1,076
Debt, NonCurrent		6
Pension Benefit Obligations		516
Other Liabilities, Noncurrent		96
Long-term liabilities of discontinued operations	$ 0	618
Discontinued Operations, Held-for-sale or Disposed of by Sale | Powertrain Systems
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]
Noncontrolling interest attributable to discontinued operations		$ 156