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Annual report pursuant to Section 13 and 15(d)

Investments In Available-For-Sale Securities And Other Cost Investments (Details)

v3.8.0.1
Investments In Available-For-Sale Securities And Other Cost Investments (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Sep. 22, 2017
USD ($)
$ / shares
shares
Dec. 31, 2017
USD ($)
item
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý $ 1,114 $ 1,309 Ìý
Payments to Acquire Investments Ìý 862 784 $ 19
Unrealized Gain (Loss) on Securities Ìý $ (88) 37 (140)
SIRIUS XM Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Ownership Interest In Investee Ìý 70.00% Ìý Ìý
Pandora Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Payments to Acquire Investments $ 480 Ìý Ìý Ìý
Pandora | SIRIUS XM Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Ownership Interest In Investee 19.00% Ìý Ìý Ìý
Ownership percentage on an as-converted basis 16.00% Ìý Ìý Ìý
Convertible Preferred Stock, Price Per Share | $ / shares $ 10.50 Ìý Ìý Ìý
Convertible Preferred Stock, Shares Issued upon Conversion | shares 95.2381 Ìý Ìý Ìý
Preferred Stock, Dividend Rate, Percentage 6.00% Ìý Ìý Ìý
Cost Method Investment Minimum Threshold Percentage Approved Issuance 19.99 Ìý Ìý Ìý
Cost Method Investment Maximum Percentage Threshold For Conversion Of Preferred Shares 19.99% Ìý Ìý Ìý
Cost Method Investment, Number of Directors Designated | item Ìý 3 Ìý Ìý
Cost Method Investment, Number of Directors Designated, Chairman | item Ìý 1 Ìý Ìý
Unrealized Gain (Loss) on Securities Ìý $ (17) Ìý Ìý
Pandora | SIRIUS XM | Minimum Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Cost Method Investment, Minimum Ownerships Percentage for Director Designation, Converted Basis Ìý 50.00% Ìý Ìý
Cost Method Investment, Minimum Ownership Percentage for Designation of Two Directors, Converted Basis Ìý 75.00% Ìý Ìý
Other AFS Securities | Fair Value Option Securities Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý $ 100 Ìý Ìý
Liberty Sirius XM Group Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý 580 Ìý Ìý
Payments to Acquire Investments Ìý 851 Ìý Ìý
Unrealized Gain (Loss) on Securities Ìý (16) Ìý Ìý
Liberty Sirius XM Group | Pandora | Fair Value Option Securities Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý 480 Ìý Ìý
Braves Group Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý 8 8 Ìý
Payments to Acquire Investments Ìý 2 20 Ìý
Unrealized Gain (Loss) on Securities Ìý Ìý 1 Ìý
Braves Group | AFS and cost method investments Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý 8 8 Ìý
Formula One Group Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý 526 1,301 Ìý
Payments to Acquire Investments Ìý 9 764 19
Unrealized Gain (Loss) on Securities Ìý (72) 36 $ (140)
Formula One Group | Fair Value Option Securities Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý 467 489 Ìý
Formula One Group | AFS and cost method investments Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý 59 812 Ìý
Formula One Group | Time Warner Inc | Fair Value Option Securities Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý 389 411 Ìý
Formula One Group | Formula 1 | AFS and cost method investments Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý Ìý 759 Ìý
Formula One Group | Other AFS Securities | Fair Value Option Securities Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý 78 78 Ìý
Formula One Group | Other AFS Securities | AFS and cost method investments Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý $ 59 $ 53 Ìý