Annual report pursuant to Section 13 and 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
Dec. 31, 2015
Dec. 31, 2014
Equity Method Investments and Operating Activities Segment [Line Items]    
Carrying amount $ 1,641 $ 1,633
HSN, Inc.    
Equity Method Investments and Operating Activities Segment [Line Items]    
Percentage ownership 38.00%  
FTD    
Equity Method Investments and Operating Activities Segment [Line Items]    
Percentage ownership   35.00%
QVC Group Common Stock    
Equity Method Investments and Operating Activities Segment [Line Items]    
Carrying amount $ 208 $ 375
QVC Group Common Stock | HSN, Inc.    
Equity Method Investments and Operating Activities Segment [Line Items]    
Percentage ownership 38.00%  
Market value $ 1,014  
Carrying amount 165 328
QVC Group Common Stock | Other    
Equity Method Investments and Operating Activities Segment [Line Items]    
Carrying amount 43 47
Liberty Ventures common stock    
Equity Method Investments and Operating Activities Segment [Line Items]    
Carrying amount 1,433 1,258
Liberty Ventures common stock | Other    
Equity Method Investments and Operating Activities Segment [Line Items]    
Carrying amount $ 239 389
Liberty Ventures common stock | Expedia    
Equity Method Investments and Operating Activities Segment [Line Items]    
Percentage ownership 16.00%  
Market value $ 2,934  
Carrying amount $ 927 $ 514
Liberty Ventures common stock | FTD    
Equity Method Investments and Operating Activities Segment [Line Items]    
Percentage ownership 37.00% 35.00%
Market value $ 267  
Carrying amount $ 267 $ 355