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Income Taxes Level 4 (Details) - Domestic and Foreign Components of Income Continuing Operations - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Examination [Line Items]      
Domestic $ (115) $ (242) $ (191)
Foreign 104 220 (31)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest $ (11) $ (22) $ (222)