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Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

v3.10.0.1
Basis of Presentation (Details)
shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Oct. 17, 2018
USD ($)
Dec. 29, 2017
shares
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Mar. 09, 2018
item
Severance Costs $ 43 Ìý Ìý Ìý Ìý Ìý Ìý
Number Of Tracking Stock | item Ìý Ìý Ìý Ìý Ìý Ìý 2
LMC Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Related Party Transaction, Amounts of Transaction Ìý Ìý $ 2 $ 3 $ 6 $ 8 Ìý
Additional Paid-In Capital Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Reclassification Ìý Ìý Ìý Ìý $ 3,894 Ìý Ìý
HSNi Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Business Acquisition, Percentage of Voting Interests Acquired Ìý 62.00% Ìý Ìý Ìý Ìý Ìý
QVC Group | HSNi Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Business Acquisition Equity Interests Issued or Issuable Number Of Shares Issued Per Shares Acquired Ìý 1.65 Ìý Ìý Ìý Ìý Ìý
QVC Group | HSNi | Common Class A Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Stock Issued During Period Shares Acquisitions] | shares Ìý 53.6 Ìý Ìý Ìý Ìý Ìý
Liberty Ventures common stock | Common Class A Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Share exchange ratio Ìý Ìý Ìý Ìý Ìý Ìý 1
Liberty Ventures common stock | Common Class B Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Share exchange ratio Ìý Ìý Ìý Ìý Ìý Ìý 1