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Quarterly report pursuant to Section 13 or 15(d)

Investments In Affiliates Accounted For Using The Equity Method (Summary of Carrying Amount and Percentage Ownership of Significant Investments in Affiliates) (Details)

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Investments In Affiliates Accounted For Using The Equity Method (Summary of Carrying Amount and Percentage Ownership of Significant Investments in Affiliates) (Details) - USD ($)
$ in Millions
Jun. 30, 2017
Dec. 31, 2016
Schedule of Equity Method Investments [Line Items] Ìý Ìý
Carrying amount $ 646 $ 581
QVC Group Common Stock Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý
Carrying amount $ 231 224
QVC Group Common Stock | HSN, Inc. Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý
Percentage ownership 38.00% Ìý
Carrying amount $ 193 184
QVC Group Common Stock | Other Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý
Carrying amount 38 40
Liberty Ventures common stock Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý
Carrying amount 415 357
Liberty Ventures common stock | Other Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý
Carrying amount $ 202 141
Liberty Ventures common stock | FTD Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý
Percentage ownership 37.00% Ìý
Carrying amount $ 213 $ 216
Fair Value, Inputs (Level 1) | QVC Group Common Stock | HSN, Inc. Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý
Market value 639 Ìý
Fair Value, Inputs (Level 1) | Liberty Ventures common stock | FTD Ìý Ìý
Schedule of Equity Method Investments [Line Items] Ìý Ìý
Market value $ 204 Ìý