Annual report pursuant to Section 13 and 15(d)

Income Taxes (Narrative) (Details)

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Income Taxes (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Contingency [Line Items]      
Unrecognized tax benefits that would impact effective tax rate $ 36    
Unrecognized tax benefits, federal tax benefits portion 19    
Unrecognized tax benefits, net increase expected during 2015 5    
United States      
Income Tax Contingency [Line Items]      
Income tax expense (benefit) on undistributed foreign earnings 2 $ (3) $ (3)
Liberty | Tax Agreement      
Income Tax Contingency [Line Items]      
Capital contribution paid to parent company for taxes 18 29  
Cash dividends paid to parent company for taxes 45    
Current tax payments due to related parties $ 71 $ 52