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Quarterly report pursuant to Section 13 or 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
3 Months Ended 9 Months Ended
Dec. 31, 2017
director
Sep. 22, 2017
$ / shares
shares
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Dec. 31, 2016
USD ($)
Transaction details [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý Ìý $ 1,120 Ìý $ 1,120 Ìý $ 1,309
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Ìý Ìý 0 Ìý 0 Ìý 0
Payments to Acquire Investments Ìý Ìý Ìý Ìý 760 $ 762 Ìý
Unrealized Gain (Loss) on Securities Ìý Ìý 18 $ 7 (43) (33) Ìý
Pandora | SIRIUS XM Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Payments to Acquire Investments Ìý Ìý Ìý Ìý 480 Ìý Ìý
Ownership Interest In Investee Ìý 19.00% Ìý Ìý Ìý Ìý Ìý
Ownership percentage on an as-converted basis Ìý 16.00% Ìý Ìý Ìý Ìý Ìý
Convertible Preferred Stock, Price Per Share | $ / shares Ìý $ 10.50 Ìý Ìý Ìý Ìý Ìý
Convertible Preferred Stock, Shares Issued upon Conversion | shares Ìý 95.2381 Ìý Ìý Ìý Ìý Ìý
Preferred Stock, Dividend Rate, Percentage Ìý 6.00% Ìý Ìý Ìý Ìý Ìý
Cost Method Investment Minimum Threshold Percentage Approved Issuance Ìý 19.99 Ìý Ìý Ìý Ìý Ìý
Cost Method Investment Maximum Percentage Threshold For Conversion Of Preferred Shares Ìý 19.99% Ìý Ìý Ìý Ìý Ìý
Cost Method Investment, Number of Directors Designated | director 3 Ìý Ìý Ìý Ìý Ìý Ìý
Cost Method Investment, Number of Directors Designated, Chairman | director 1 Ìý Ìý Ìý Ìý Ìý Ìý
Unrealized Gain (Loss) on Securities Ìý Ìý 62 Ìý 62 Ìý Ìý
Pandora | SIRIUS XM | Minimum Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Cost Method Investment, Minimum Ownerships Percentage for Director Designation, Converted Basis 50.00% Ìý Ìý Ìý Ìý Ìý Ìý
Cost Method Investment, Minimum Ownership Percentage for Designation of Two Directors, Converted Basis 75.00% Ìý Ìý Ìý Ìý Ìý Ìý
Liberty Sirius XM Group Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý Ìý 552 Ìý 552 Ìý Ìý
Payments to Acquire Investments Ìý Ìý Ìý Ìý 750 Ìý Ìý
Unrealized Gain (Loss) on Securities Ìý Ìý 62 Ìý 62 Ìý Ìý
Liberty Sirius XM Group | Pandora | Fair Value Option Securities Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý Ìý 552 Ìý 552 Ìý Ìý
Braves Group Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý Ìý 8 Ìý 8 Ìý 8
Payments to Acquire Investments Ìý Ìý Ìý Ìý 2 13 Ìý
Braves Group | Other equity securities | AFS and cost method investments Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý Ìý 8 Ìý 8 Ìý 8
Formula One Group Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý Ìý 560 Ìý 560 Ìý 1,301
Payments to Acquire Investments Ìý Ìý Ìý Ìý 8 749 Ìý
Unrealized Gain (Loss) on Securities Ìý Ìý (44) $ 7 (105) $ (33) Ìý
Formula One Group | Fair Value Option Securities Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý Ìý 502 Ìý 502 Ìý 489
Formula One Group | AFS and cost method investments Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý Ìý 58 Ìý 58 Ìý 812
Formula One Group | Time Warner Inc | Fair Value Option Securities Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý Ìý 436 Ìý 436 Ìý 411
Formula One Group | Viacom, Inc. | Fair Value Option Securities Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý Ìý 52 Ìý 52 Ìý 65
Formula One Group | Formula 1 | AFS and cost method investments Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý Ìý Ìý Ìý Ìý Ìý 759
Formula One Group | Other equity securities | Fair Value Option Securities Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý Ìý 14 Ìý 14 Ìý 13
Formula One Group | Other AFS Equity Securities | AFS and cost method investments Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Transaction details [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Investments in available-for-sale securities and other cost investments Ìý Ìý $ 58 Ìý $ 58 Ìý $ 53