Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Narrative) (Details)

v3.10.0.1
Stockholders' Equity (Narrative) (Details)
$ in Millions
 12 Months Ended
Dec. 29, 2017
shares
Dec. 31, 2018
USD ($)
Vote
shares
Dec. 31, 2017
USD ($)
shares
Dec. 31, 2016
USD ($)
shares
Mar. 09, 2018
Nov. 04, 2016
Jun. 02, 2015
shares
Class of Stock [Line Items]              
Preferred Stock, Shares Issued   0 0        
Capital stock designated as common stock             8,965,000,000
Capital stock authorized for issuance             9,015,000,000
Common Stock, Capital Shares Reserved for Future Issuance   30,300,000          
Common Class A              
Class of Stock [Line Items]              
Number of votes | Vote   1          
Share received in exchange   1          
Common stock, shares authorized   4,000,000,000 4,000,000,000        
Common Stock, Shares, Issued   409,901,058 449,335,940        
Common Stock, Shares, Outstanding   409,901,058 449,335,940        
Common Stock, Capital Shares Reserved for Future Issuance   28,400,000          
Stock Repurchased and Retired During Period, Shares   43,080,787 34,765,751 34,836,196      
Stock Repurchased and Retired During Period, Value | $   $ 988 $ 766 $ 799      
Common Class A | Liberty Expedia Holdings | Discontinued Operations Split-Off              
Class of Stock [Line Items]              
Spilt-Off redemption ratio           0.4  
Common Class A | Liberty Ventures common stock              
Class of Stock [Line Items]              
Common stock, shares authorized     400,000,000       400,000,000
Common Stock, Shares, Issued     81,686,659        
Common Stock, Shares, Outstanding     81,686,659        
Spilt-Off redemption ratio         1    
Common Class A | Liberty Ventures common stock | Liberty Expedia Holdings | Discontinued Operations Split-Off              
Class of Stock [Line Items]              
Spilt-Off redemption ratio           0.4  
Common Class B              
Class of Stock [Line Items]              
Number of votes | Vote   10          
Common stock, shares authorized   150,000,000 150,000,000        
Common Stock, Shares, Issued   29,248,343 29,203,895        
Common Stock, Shares, Outstanding   29,248,343 29,203,895        
Common Stock, Capital Shares Reserved for Future Issuance   1,800,000          
Common Class B | Liberty Expedia Holdings | Discontinued Operations Split-Off              
Class of Stock [Line Items]              
Spilt-Off redemption ratio           0.4  
Common Class B | Liberty Ventures common stock              
Class of Stock [Line Items]              
Common stock, shares authorized     15,000,000       15,000,000
Common Stock, Shares, Issued     4,455,311        
Common Stock, Shares, Outstanding     4,455,311        
Spilt-Off redemption ratio         1    
Common Class B | Liberty Ventures common stock | Liberty Expedia Holdings | Discontinued Operations Split-Off              
Class of Stock [Line Items]              
Spilt-Off redemption ratio           0.4  
Common Class C              
Class of Stock [Line Items]              
Common stock, shares authorized   4,000,000,000          
Common Stock, Shares, Issued   0          
Common Stock, Shares, Outstanding   0          
Common Class C | Liberty Ventures common stock              
Class of Stock [Line Items]              
Common stock, shares authorized             400,000,000
HSN, Inc. | Common Class A              
Class of Stock [Line Items]              
Stock Issued During Period Shares Acquisitions 53,600,000