Income Taxes Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions		Dec. 31, 2017	Dec. 31, 2016
Deferred Tax Assets, Net of Valuation Allowance [Abstract]
Pension		$ 94	$ 79
Employee Benefits		12	26
Net operating loss carryforwards		976	1,362
Warranty and other liabilities		88	93
Other		210	236
Total gross deferred tax assets		1,380	1,796
Less: valuation allowances		(1,008)	(1,399)
Total deferred tax assets (1)	[1]	372	397
Deferred Tax Liabilities, Gross [Abstract]
Fixed assets		33	21
Tax on unremitted profits of certain foreign subsidiaries		69	73
Intangibles		307	316
Total gross deferred tax liabilities		409	410
Net deferred tax liabilities		$ (37)	$ (13)

[1] Reflects gross amount before jurisdictional netting of deferred tax assets and liabilities.