Annual report pursuant to Section 13 and 15(d)

Basis of Presentation (Details)

v3.10.0.1
Basis of Presentation (Details)
1 Months Ended 12 Months Ended
Dec. 29, 2017
shares
Jul. 22, 2016
shares
Oct. 31, 2016
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
May 23, 2018
Mar. 09, 2018
item
Nov. 04, 2016
USD ($)
Nov. 02, 2016
USD ($)
Aug. 31, 2016
USD ($)
Severance Costs       $ 41,000,000              
Related Party Transaction, Amounts of Transaction       8,000,000 $ 11,000,000 $ 10,000,000          
Number Of Tracking Stock | item               2      
Reimbursement from Liberty Expedia Holdings     $ 4,000,000                
1.75% Exchangeable Senior Debentures due 2046                      
Principal amount                     $ 1,000
GCI Liberty                      
Related party Payable       103,000,000              
Related party payable, current       $ 37,000,000              
HSN, Inc.                      
Business Acquisition, Percentage of Voting Interests Acquired 62.00%                    
HSN, Inc. | Common Class A                      
Business Acquisition Equity Interests Issued or Issuable Number Of Shares Issued Per Shares Acquired 1.65                    
Stock Issued During Period Shares Acquisitions | shares 53,600,000                    
QVC Group                      
Share exchange ratio             1        
Liberty Ventures common stock | Common Class A                      
Spilt-Off redemption ratio               1      
Liberty Ventures common stock | Common Class B                      
Spilt-Off redemption ratio               1      
Transfer to entity under common control | QVC                      
Ownership interest in investee       100.00%              
CommerceHub | Spinoff | Common Class A                      
Shares issued as dividend | shares   0.1                  
CommerceHub | Spinoff | Common Class B                      
Shares issued as dividend | shares   0.1                  
CommerceHub | Spinoff | Common Class C                      
Shares issued as dividend | shares   0.2                  
Liberty Expedia Holdings | Discontinued Operations Split-Off                      
Cash distributed to Liberty from Liberty Expedia Holdings                 $ 299,000,000    
Liberty Expedia Holdings | Discontinued Operations Split-Off | Expedia Holdings Margin Loan                      
Principal amount                   $ 350,000,000  
Liberty Expedia Holdings | Discontinued Operations Split-Off | Common Class A                      
Spilt-Off redemption ratio                 0.4    
Liberty Expedia Holdings | Discontinued Operations Split-Off | Common Class B                      
Spilt-Off redemption ratio                 0.4    
Liberty Expedia Holdings | Discontinued Operations Split-Off | Liberty Ventures common stock | Common Class A                      
Spilt-Off redemption ratio                 0.4    
Liberty Expedia Holdings | Discontinued Operations Split-Off | Liberty Ventures common stock | Common Class B                      
Spilt-Off redemption ratio                 0.4