Income Taxes Level 4 (Details) - Reconciliation of Differences Between Income Taxes For Continuing Operations and Provisions for Income Taxes - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes Reconciliation between Continuing Operations and Provisions for Income Taxes [Line Items]
Federal Statutory Income Tax Rate	35.00%
Income tax benefit computed at federal statutory tax rate	$ (4)	$ (8)	$ (78)
State tax provision, net of federal benefits	0	1	1
Foreign tax rate (benefit) expense differential	(18)	(15)	7
Foreign source income subject to U.S. taxation	21	41	20
(Gains) losses and other (income) expenses (excluded) not deductible for tax	(4)	1	1
Increase in the taxes due to changes in valuation allowance	42	17	66
Additional (benefit) tax on foreign unrepatriated earnings	(16)	18	8
Additional expense for uncertain tax positions	(3)	3	(3)
Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Amount	0	(1)	0
Changes in enacted tax laws and tax rates	0	(23)	0
write off net operating loss	20	0	0
Income tax expense	$ 38	$ 34	$ 22