Annual report pursuant to Section 13 and 15(d)

Income Taxes (Narrative) (Details)

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Income Taxes (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Tax Contingency [Line Items]      
Provision at statutory rate 21.00% 35.00% 35.00%
Income tax benefit $ 282    
Tax benefit recognized 1,000,000 $ 9,000,000 $ 7,000,000
Unrecognized tax benefits that would impact effective tax rate 43,000,000    
Federal tax effect on unrecognized tax benefits 11,000,000    
Significant change in unrecognized tax benefits is reasonably possible, amount of unrecorded benefit $ 2,000,000    
UNITED STATES      
Income Tax Contingency [Line Items]      
Provision at statutory rate 21.00% 35.00%  
Liberty | Tax Agreement      
Income Tax Contingency [Line Items]      
Capital contribution paid to parent company for taxes $ 2,000,000 $ 31,000,000  
Cash dividends paid to parent company for taxes     $ 64,000,000
Qurate | Tax Agreement      
Income Tax Contingency [Line Items]      
Current tax payments due to related parties $ 26,000,000 $ 52,000,000