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Quarterly report pursuant to Section 13 or 15(d)

Tracking Stocks (Narrative) (Details)

v3.10.0.1
Tracking Stocks (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
6 Months Ended
Jul. 18, 2018
Jun. 30, 2018
Dec. 31, 2017
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý
Cash and cash equivalents Ìý $ 485 $ 1,029
Liberty Sirius XM Group Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý
Cash and cash equivalents Ìý 174 Ìý
Braves Group Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý
Cash and cash equivalents Ìý 113 Ìý
Formula One Group Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý
Cash and cash equivalents Ìý 198 Ìý
SIRIUS XM Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý
Common Stock, Dividends, Per Share, Declared $ 0.011 Ìý Ìý
Payments of Dividends Ìý 99 Ìý
Cash Dividends Paid to Parent Company Ìý 70 Ìý
SIRIUS XM | Liberty Sirius XM Group Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý
Cash and cash equivalents Ìý $ 64 Ìý
Formula 1 | Braves Group Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý
Percentage ownership Ìý 15.10% Ìý
Investment Owned, Balance, Shares Ìý 9,084,940 Ìý
Formula 1 | Braves Group | Common Class C Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý
Investment Owned, Balance, Shares Ìý 9,084,940 Ìý
Formula 1 | Formula One Group Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý
Cash and cash equivalents Ìý $ 89 Ìý
Braves Holdings | Braves Group Ìý Ìý Ìý
Targeted or Tracking Stock, Stock [Line Items] Ìý Ìý Ìý
Cash and cash equivalents Ìý $ 78 Ìý