Quarterly report pursuant to Section 13 or 15(d)

Tracking Stocks (Details)

v3.8.0.1
Tracking Stocks (Details)
$ / shares in Units, shares in Millions
 3 Months Ended
Jul. 06, 2017
USD ($)
$ / shares
shares
Apr. 04, 2017
USD ($)
Sep. 30, 2017
USD ($)
item
Dec. 31, 2016
USD ($)
Sep. 30, 2016
USD ($)
Dec. 31, 2015
USD ($)
Targeted or Tracking Stock, Stock [Line Items]            
Number of tracking stocks | item     2      
Cash and cash equivalents     $ 895,000,000 $ 825,000,000 $ 505,000,000 $ 2,449,000,000
HSN, Inc.            
Targeted or Tracking Stock, Stock [Line Items]            
Business Acquisition, Share Price | $ / shares $ 40.36          
Percentage of equity method investee not currently owned 62.00%          
Enterprise value of acquired business $ 2,600,000,000          
Equity value of acquired business $ 2,100,000,000          
Business acquisition premium paid per share percentage 29.00%          
Liberty Ventures common stock            
Targeted or Tracking Stock, Stock [Line Items]            
Reference price   $ 43.65        
GCI common stock | Common Class B            
Targeted or Tracking Stock, Stock [Line Items]            
Redemption Premium     0      
QVC Group Common Stock            
Targeted or Tracking Stock, Stock [Line Items]            
Cash and cash equivalents     $ 383,000,000 338,000,000 348,000,000 426,000,000
QVC Group Common Stock | HSN, Inc.            
Targeted or Tracking Stock, Stock [Line Items]            
Equity Method Investment, Ownership Percentage     38.00%      
QVC Group Common Stock | Common Class A | HSN, Inc.            
Targeted or Tracking Stock, Stock [Line Items]            
Business Acquisition Equity Interests Issued or Issuable Number Of Shares Issued Per Shares Acquired 1.65          
Business acquisition consideration transferred number of shares | shares 53.4          
Liberty Ventures common stock            
Targeted or Tracking Stock, Stock [Line Items]            
Cash and cash equivalents     $ 512,000,000 $ 487,000,000 $ 157,000,000 $ 2,023,000,000
Liberty Ventures common stock | 1.75% Exchangeable Senior Debentures due 2046 [Member]            
Targeted or Tracking Stock, Stock [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage     1.75%      
Liberty Ventures common stock | Ventures Margin Loan            
Targeted or Tracking Stock, Stock [Line Items]            
Maximum Borrowing Capacity   $ 1,000,000,000        
GCI | Common Class A            
Targeted or Tracking Stock, Stock [Line Items]            
Share exchange ratio   0.63        
Total consideration per share of GCI common stock   $ 27.50        
GCI | Preferred Class A            
Targeted or Tracking Stock, Stock [Line Items]            
Share exchange ratio   0.20        
Total consideration per share of GCI common stock   $ 5.00        
GCI | GCI common stock            
Targeted or Tracking Stock, Stock [Line Items]            
Total consideration per share of GCI common stock   $ 32.50        
Minimum | GCI | Preferred Class A            
Targeted or Tracking Stock, Stock [Line Items]            
Preferred Stock, Dividend Rate, Percentage   5.00%        
Maximum | GCI | Preferred Class A            
Targeted or Tracking Stock, Stock [Line Items]            
Preferred Stock, Dividend Rate, Percentage   7.00%