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 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
May 18, 2016
Schedule of Equity Method Investments [Line Items]            
Share of earnings (losses) of affiliates, net $ (9) $ (2) $ (36) $ 1    
Investment in Affiliate $ 3,703   $ 3,703   $ 3,161  
Liberty Broadband            
Schedule of Equity Method Investments [Line Items]            
Investment in Affiliate           $ 2,400
Ownership Interest In Investee 23.00%   23.00%      
QVC Group Common Stock            
Schedule of Equity Method Investments [Line Items]            
Share of earnings (losses) of affiliates, net $ 6 9 $ 20 30    
QVC Group Common Stock | HSN, Inc.            
Schedule of Equity Method Investments [Line Items]            
Share of earnings (losses) of affiliates, net 7 10 23 32    
QVC Group Common Stock | Other            
Schedule of Equity Method Investments [Line Items]            
Share of earnings (losses) of affiliates, net (1) (1) (3) (2)    
Liberty Ventures common stock            
Schedule of Equity Method Investments [Line Items]            
Share of earnings (losses) of affiliates, net (15) (11) (56) (29)    
Investment in Affiliate 3,703   3,703      
Liberty Ventures common stock | FTD            
Schedule of Equity Method Investments [Line Items]            
Share of earnings (losses) of affiliates, net   2 (5) (1)    
Liberty Ventures common stock | Other            
Schedule of Equity Method Investments [Line Items]            
Share of earnings (losses) of affiliates, net $ (15) $ (13) $ (51) $ (28)