Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

v3.8.0.1
Basis of Presentation (Details)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Jul. 22, 2016
shares
May 18, 2016
USD ($)
$ / shares
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Dec. 31, 2016
USD ($)
Nov. 04, 2016
USD ($)
Nov. 02, 2016
USD ($)
Investments in and Advances to Affiliates, at Fair Value     $ 4,068   $ 4,068   $ 3,161    
Liberty Expedia Holdings                  
Cash distributed to Liberty from Liberty Expedia Holdings               $ 299  
Additional Paid-In Capital                  
Reclassification         $ 405        
Liberty Broadband                  
Ownership Interest In Investee     23.00%   23.00%        
Investments in and Advances to Affiliates, at Fair Value   $ 2,400              
Liberty Ventures common stock                  
Investments in and Advances to Affiliates, at Fair Value     $ 4,068   $ 4,068        
Price per share of Liberty Broadband Series C common stock | $ / shares   $ 56.23              
Liberty Ventures common stock | Liberty Broadband                  
Liberty Broadband investment in Charter stock   $ 5,000              
Liberty Ventures common stock | Common Class A                  
Spilt-Off redemption ratio               0.4  
Liberty Ventures common stock | Common Class B                  
Spilt-Off redemption ratio               0.4  
CommerceHub | Common Class A                  
Shares issued as dividend | shares 0.1                
CommerceHub | Common Class B                  
Shares issued as dividend | shares 0.1                
CommerceHub | Common Class C                  
Shares issued as dividend | shares 0.2                
Liberty Expedia Holdings | Common Class A                  
Spilt-Off redemption ratio               0.4  
Liberty Expedia Holdings | Common Class B                  
Spilt-Off redemption ratio               0.4  
Liberty Expedia Holdings | Spinoff | Expedia Holdings Margin Loan | Liberty Expedia Holdings                  
Principal amount                 $ 350
Corporate and Other | Liberty Ventures common stock                  
Investments in and Advances to Affiliates, at Fair Value     4,068   4,068        
LMC                  
Related Party Transaction, Amounts of Transaction     $ 3 $ 2 $ 8 $ 8      
Charter                  
Share exchange ratio   1