Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

v3.10.0.1
Basis of Presentation (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 29, 2017
Jun. 23, 2016
General business information            
Dividends paid to noncontrolling interest     $ 23,000,000 $ 22,000,000    
Line of credit facility, maximum borrowing capacity           $ 2,650,000,000
Transaction related costs $ 28,000,000 $ 3,000,000 32,000,000 3,000,000    
zulily, llc [Member]            
General business information            
Related party transaction, amounts of transaction     $ 8,000,000 $ 7,000,000    
QVC-Japan            
General business information            
Investment owned, percent of net assets 60.00%   60.00%      
Noncontrolling interest, ownership percentage by noncontrolling owners 40.00%   40.00%      
CNR Home Shopping Co., Ltd.            
General business information            
Equity method investment, ownership percentage 49.00%   49.00%      
HSN, Inc. [Member]            
General business information            
Related party transaction, amounts of transaction     $ 28,000,000      
Remaining ownership interest acquired by parent         62.00%  
Revolving Credit Facility | QVC            
General business information            
Line of credit facility, maximum borrowing capacity           2,250,000,000
Revolving Credit Facility | Tranche One, Shared with Related Party            
General business information            
Line of credit facility, maximum borrowing capacity           $ 400,000,000
Line of credit facility, fair value of amount outstanding $ 150,000,000   $ 150,000,000