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Quarterly report pursuant to Section 13 or 15(d)

Tracking Stocks (Details)

v3.8.0.1
Tracking Stocks (Details)
$ / shares in Units, shares in Millions
 3 Months Ended
Jul. 06, 2017
USD ($)
$ / shares
shares
Apr. 04, 2017
USD ($)
Sep. 30, 2017
USD ($)
item
Dec. 31, 2016
USD ($)
Sep. 30, 2016
USD ($)
Dec. 31, 2015
USD ($)
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Number of tracking stocks | item Ìý Ìý 2 Ìý Ìý Ìý
Cash and cash equivalents Ìý Ìý $ 895,000,000 $ 825,000,000 $ 505,000,000 $ 2,449,000,000
HSN, Inc. Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Business Acquisition, Share Price | $ / shares $ 40.36 Ìý Ìý Ìý Ìý Ìý
Percentage of equity method investee not currently owned 62.00% Ìý Ìý Ìý Ìý Ìý
Enterprise value of acquired business $ 2,600,000,000 Ìý Ìý Ìý Ìý Ìý
Equity value of acquired business $ 2,100,000,000 Ìý Ìý Ìý Ìý Ìý
Business acquisition premium paid per share percentage 29.00% Ìý Ìý Ìý Ìý Ìý
Liberty Ventures common stock Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Reference price Ìý $ 43.65 Ìý Ìý Ìý Ìý
GCI common stock | Common Class B Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Redemption Premium Ìý Ìý 0 Ìý Ìý Ìý
QVC Group Common Stock Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Cash and cash equivalents Ìý Ìý $ 383,000,000 338,000,000 348,000,000 426,000,000
QVC Group Common Stock | HSN, Inc. Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Equity Method Investment, Ownership Percentage Ìý Ìý 38.00% Ìý Ìý Ìý
QVC Group Common Stock | Common Class A | HSN, Inc. Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Business Acquisition Equity Interests Issued or Issuable Number Of Shares Issued Per Shares Acquired 1.65 Ìý Ìý Ìý Ìý Ìý
Business acquisition consideration transferred number of shares | shares 53.4 Ìý Ìý Ìý Ìý Ìý
Liberty Ventures common stock Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Cash and cash equivalents Ìý Ìý $ 512,000,000 $ 487,000,000 $ 157,000,000 $ 2,023,000,000
Liberty Ventures common stock | 1.75% Exchangeable Senior Debentures due 2046 [Member] Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Interest Rate, Stated Percentage Ìý Ìý 1.75% Ìý Ìý Ìý
Liberty Ventures common stock | Ventures Margin Loan Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Maximum Borrowing Capacity Ìý $ 1,000,000,000 Ìý Ìý Ìý Ìý
GCI | Common Class A Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Share exchange ratio Ìý 0.63 Ìý Ìý Ìý Ìý
Total consideration per share of GCI common stock Ìý $ 27.50 Ìý Ìý Ìý Ìý
GCI | Preferred Class A Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Share exchange ratio Ìý 0.20 Ìý Ìý Ìý Ìý
Total consideration per share of GCI common stock Ìý $ 5.00 Ìý Ìý Ìý Ìý
GCI | GCI common stock Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Total consideration per share of GCI common stock Ìý $ 32.50 Ìý Ìý Ìý Ìý
Minimum | GCI | Preferred Class A Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Preferred Stock, Dividend Rate, Percentage Ìý 5.00% Ìý Ìý Ìý Ìý
Maximum | GCI | Preferred Class A Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Preferred Stock, Dividend Rate, Percentage Ìý 7.00% Ìý Ìý Ìý Ìý