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
Mar. 31, 2016
Dec. 31, 2015
Equity Method Investments and Operating Activities Segment [Line Items]    
Carrying amount $ 1,651 $ 1,641
QVC Group Common Stock    
Equity Method Investments and Operating Activities Segment [Line Items]    
Carrying amount $ 223 208
QVC Group Common Stock | HSN, Inc.    
Equity Method Investments and Operating Activities Segment [Line Items]    
Percentage ownership 38.00%  
Carrying amount $ 180 165
QVC Group Common Stock | Other    
Equity Method Investments and Operating Activities Segment [Line Items]    
Carrying amount 43 43
Liberty Ventures common stock    
Equity Method Investments and Operating Activities Segment [Line Items]    
Carrying amount 1,428 1,433
Liberty Ventures common stock | Other    
Equity Method Investments and Operating Activities Segment [Line Items]    
Carrying amount $ 273 239
Liberty Ventures common stock | Expedia    
Equity Method Investments and Operating Activities Segment [Line Items]    
Percentage ownership 16.00%  
Carrying amount $ 894 927
Liberty Ventures common stock | FTD    
Equity Method Investments and Operating Activities Segment [Line Items]    
Percentage ownership 37.00%  
Carrying amount $ 261 $ 267
Fair Value, Inputs (Level 1) | QVC Group Common Stock | HSN, Inc.    
Equity Method Investments and Operating Activities Segment [Line Items]    
Market value 1,047  
Fair Value, Inputs (Level 1) | Liberty Ventures common stock | Expedia    
Equity Method Investments and Operating Activities Segment [Line Items]    
Market value 2,545  
Fair Value, Inputs (Level 1) | Liberty Ventures common stock | FTD    
Equity Method Investments and Operating Activities Segment [Line Items]    
Market value $ 268