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Quarterly report pursuant to Section 13 or 15(d)

Investments In Affiliates Accounted For Using The Equity Method (Summary of Share Earnings (Losses) of Affiliates) (Details)

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Investments In Affiliates Accounted For Using The Equity Method (Summary of Share Earnings (Losses) of Affiliates) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
May 18, 2016
Schedule of Equity Method Investments [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Share of earnings (losses) of affiliates, net $ (86) $ (22) $ (122) $ (21) Ìý Ìý
Investment in Affiliate $ 4,068 Ìý $ 4,068 Ìý $ 3,161 Ìý
Liberty Broadband Ìý Ìý Ìý Ìý Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Investment in Affiliate Ìý Ìý Ìý Ìý Ìý $ 2,400
Ownership Interest In Investee 23.00% Ìý 23.00% Ìý Ìý Ìý
QVC Group Common Stock Ìý Ìý Ìý Ìý Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Share of earnings (losses) of affiliates, net $ 11 8 $ 31 38 Ìý Ìý
QVC Group Common Stock | HSN, Inc. Ìý Ìý Ìý Ìý Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Share of earnings (losses) of affiliates, net 12 9 35 41 Ìý Ìý
QVC Group Common Stock | Other Ìý Ìý Ìý Ìý Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Share of earnings (losses) of affiliates, net (1) (1) (4) (3) Ìý Ìý
Liberty Ventures common stock Ìý Ìý Ìý Ìý Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Share of earnings (losses) of affiliates, net (97) (30) (153) (59) Ìý Ìý
Investment in Affiliate 4,068 Ìý 4,068 Ìý Ìý Ìý
Liberty Ventures common stock | FTD Ìý Ìý Ìý Ìý Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Share of earnings (losses) of affiliates, net (81) (7) (86) (8) Ìý Ìý
Liberty Ventures common stock | LendingTree Ìý Ìý Ìý Ìý Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Share of earnings (losses) of affiliates, net 2 2 5 10 Ìý Ìý
Liberty Ventures common stock | Other Ìý Ìý Ìý Ìý Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý
Share of earnings (losses) of affiliates, net $ (18) $ (25) $ (72) $ (61) Ìý Ìý