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Annual report pursuant to Section 13 and 15(d)

Tracking Stocks (Details)

v3.8.0.1
Tracking Stocks (Details)
$ / shares in Units, shares in Millions
Dec. 31, 2017
USD ($)
item
Dec. 29, 2017
USD ($)
shares
Apr. 04, 2017
USD ($)
May 18, 2016
USD ($)
$ / shares
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Number of tracking stocks | item 2 Ìý Ìý Ìý Ìý Ìý Ìý
Cash and cash equivalents $ 903,000,000 Ìý Ìý Ìý $ 825,000,000 $ 2,449,000,000 $ 2,306,000,000
Investments in and Advances to Affiliates, at Fair Value $ 3,635,000,000 Ìý Ìý Ìý 3,161,000,000 Ìý Ìý
1.75% Exchangeable Senior Debentures due 2046 Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Interest Rate, Stated Percentage 1.75% Ìý Ìý Ìý Ìý Ìý Ìý
HSNi Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Percentage of equity method investee not currently owned Ìý 62.00% Ìý Ìý Ìý Ìý Ìý
HSNi Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Percentage of equity method investee not currently owned Ìý 62.00% Ìý Ìý Ìý Ìý Ìý
Equity value of acquired business Ìý $ 1,900,000,000 Ìý Ìý Ìý Ìý Ìý
Liberty Ventures common stock Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Reference price Ìý Ìý $ 43.65 Ìý Ìý Ìý Ìý
Liberty Ventures common stock | 1.75% Exchangeable Senior Debentures due 2046 Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Interest Rate, Stated Percentage 1.75% Ìý Ìý Ìý Ìý Ìý Ìý
Liberty Broadband Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Investments in and Advances to Affiliates, at Fair Value Ìý Ìý Ìý $ 2,400,000,000 Ìý Ìý Ìý
QVC Group Common Stock Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Cash and cash equivalents $ 330,000,000 Ìý Ìý Ìý 338,000,000 426,000,000 422,000,000
Liberty Ventures common stock Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Cash and cash equivalents 573,000,000 Ìý Ìý Ìý 487,000,000 $ 2,023,000,000 $ 1,884,000,000
Investments in and Advances to Affiliates, at Fair Value $ 3,635,000,000 Ìý Ìý Ìý $ 3,161,000,000 Ìý Ìý
Price per share of Liberty Broadband Series C common stock | $ / shares Ìý Ìý Ìý $ 56.23 Ìý Ìý Ìý
Liberty Ventures common stock | 1.75% Exchangeable Senior Debentures due 2046 Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Interest Rate, Stated Percentage 1.75% Ìý Ìý Ìý Ìý Ìý Ìý
Liberty Ventures common stock | Ventures Margin Loan Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Maximum Borrowing Capacity Ìý Ìý $ 1,000,000,000 Ìý Ìý Ìý Ìý
GCI | Spinoff | Common Class A Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Share exchange ratio Ìý Ìý 0.63 Ìý Ìý Ìý Ìý
Total consideration per share of GCI common stock Ìý Ìý $ 27.50 Ìý Ìý Ìý Ìý
GCI | Spinoff | Preferred Class A Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Share exchange ratio Ìý Ìý 0.20 Ìý Ìý Ìý Ìý
Total consideration per share of GCI common stock Ìý Ìý $ 5.00 Ìý Ìý Ìý Ìý
GCI | Spinoff | GCI common stock Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Total consideration per share of GCI common stock Ìý Ìý $ 32.50 Ìý Ìý Ìý Ìý
Liberty Broadband | Charter Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Payments to Acquire Equity Method Investments Ìý Ìý Ìý $ 5,000,000,000 Ìý Ìý Ìý
Broadband Holdco, LLC | Broadband Holdco Margin Loan Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Maximum Borrowing Capacity Ìý $ 1,000,000,000 Ìý Ìý Ìý Ìý Ìý
Number of common shares owned and pledged as collateral | shares Ìý 42.7 Ìý Ìý Ìý Ìý Ìý
Value of pledged collateral Ìý $ 3,600,000,000 Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Description of Variable Rate Basis Ìý LIBOR Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Basis Spread on Variable Rate Ìý 1.85% Ìý Ìý Ìý Ìý Ìý
Unused commitment fee percentage Ìý 0.75% Ìý Ìý Ìý Ìý Ìý
Margin loan outstanding borrowings $ 0 Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Term Ìý 2 years Ìý Ìý Ìý Ìý Ìý
Minimum | GCI | Spinoff | Preferred Class A Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Preferred Stock, Dividend Rate, Percentage Ìý Ìý 5.00% Ìý Ìý Ìý Ìý
Maximum | GCI | Spinoff | Preferred Class A Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Preferred Stock, Dividend Rate, Percentage Ìý Ìý 7.00% Ìý Ìý Ìý Ìý