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, 2016
Dec. 31, 2015
Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]      
Carrying amount $ 581 $ 714  
HSN, Inc.      
Schedule of Equity Method Investments [Line Items]      
Percentage ownership 38.00%    
FTD      
Schedule of Equity Method Investments [Line Items]      
Percentage ownership   35.00% 35.00%
QVC Group Common Stock      
Schedule of Equity Method Investments [Line Items]      
Carrying amount $ 224 $ 208  
QVC Group Common Stock | HSN, Inc.      
Schedule of Equity Method Investments [Line Items]      
Percentage ownership 38.00%    
Market value $ 687    
Carrying amount 184 165  
QVC Group Common Stock | Other      
Schedule of Equity Method Investments [Line Items]      
Carrying amount 40 43  
Liberty Ventures common stock      
Schedule of Equity Method Investments [Line Items]      
Carrying amount 357 506  
Liberty Ventures common stock | Other      
Schedule of Equity Method Investments [Line Items]      
Carrying amount $ 141 239  
Liberty Ventures common stock | FTD      
Schedule of Equity Method Investments [Line Items]      
Percentage ownership 37.00%    
Market value $ 243    
Carrying amount $ 216 $ 267