Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Narrative) (Details)

v3.19.3.a.u2
Stockholders' Equity (Narrative) (Details)
$ in Millions
 12 Months Ended
Dec. 29, 2017
shares
Dec. 31, 2019
USD ($)
Vote
shares
Dec. 31, 2018
USD ($)
shares
Dec. 31, 2017
USD ($)
shares
May 23, 2018
shares
Mar. 09, 2018
Jun. 02, 2015
shares
Class of Stock [Line Items]              
Preferred Stock, Shares Issued   0 0        
Capital stock authorized for issuance         8,200,000,000   9,015,000,000
Common Stock, Capital Shares Reserved for Future Issuance     25,100,000   8,150,000,000   8,965,000,000
Preferred Stock, Capital Shares Reserved for Future Issuance         50,000,000    
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   386,691,461 409,901,058        
Common Stock, Shares, Outstanding   386,691,461 409,901,058        
Common Stock, Capital Shares Reserved for Future Issuance         4,000,000,000    
Stock Repurchased and Retired During Period, Shares   24,329,610 43,080,787 34,765,751      
Stock Repurchased and Retired During Period, Value | $   $ 392 $ 988 $ 766      
Common Class A | Stock Option              
Class of Stock [Line Items]              
Common Stock, Capital Shares Reserved for Future Issuance   23,200,000          
Common Class A | Liberty Ventures common stock              
Class of Stock [Line Items]              
Spilt-Off redemption ratio           1  
Common Stock, Capital Shares Reserved for Future Issuance             400,000,000
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   29,278,424 29,248,343        
Common Stock, Shares, Outstanding   29,278,424 29,248,343        
Common Stock, Capital Shares Reserved for Future Issuance         150,000,000    
Common Class B | Stock Option              
Class of Stock [Line Items]              
Common Stock, Capital Shares Reserved for Future Issuance   1,800,000          
Common Class B | Liberty Ventures common stock              
Class of Stock [Line Items]              
Spilt-Off redemption ratio           1  
Common Stock, Capital Shares Reserved for Future Issuance             15,000,000
Common Class C              
Class of Stock [Line Items]              
Common Stock, Shares, Issued   0          
Common Stock, Shares, Outstanding   0          
Common Stock, Capital Shares Reserved for Future Issuance   4,000,000,000     4,000,000,000    
Common Class C | Liberty Ventures common stock              
Class of Stock [Line Items]              
Common Stock, Capital Shares Reserved for Future Issuance             400,000,000
HSN, Inc. | Common Class A              
Class of Stock [Line Items]              
Stock Issued During Period Shares Acquisitions 53,600,000