Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

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Basis of Presentation (Details)
shares in Millions, $ in Millions
3 Months Ended
Dec. 29, 2017
shares
Mar. 31, 2018
USD ($)
Mar. 31, 2017
USD ($)
1.75% Exchangeable Senior Debentures due 2046      
Debt instrument interest rate   1.75%  
Additional Paid-In Capital      
Reclassification   $ 3,530  
HSNi      
Business Acquisition, Percentage of Voting Interests Acquired 62.00%    
HSNi | QVC Group      
Business Acquisition Equity Interests Issued or Issuable Number Of Shares Issued Per Shares Acquired 1.65    
HSNi | QVC Group | Common Class A      
Stock Issued During Period Shares Acquisitions] | shares 53.6    
LMC      
Related Party Transaction, Amounts of Transaction   $ 3 $ 3