Annual report pursuant to Section 13 and 15(d)

Related Party Transactions (Details)

v3.8.0.1
Related Party Transactions (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 29, 2017
Jun. 30, 2016
Jun. 23, 2016
Related Party Transaction [Line Items]            
Line of credit facility maximum borrowing capacity           $ 2,650
Letters of Credit Outstanding, Amount $ 16 $ 18        
zulily, llc            
Related Party Transaction [Line Items]            
Related party transaction, amounts of transactions 9 12 $ 1      
Letters of Credit Outstanding, Amount 10          
CommerceHub, Inc.            
Related Party Transaction [Line Items]            
Related Party Transaction, Expenses from Transactions with Related Party 3 $ 3 $ 3      
HSN, Inc.            
Related Party Transaction [Line Items]            
Remaining ownership interest acquired by parent       62.00%    
CommerceHub, Inc.            
Related Party Transaction [Line Items]            
Ownership Percentage by Parent         99.00%  
QVC [Member] | Senior secured credit facility            
Related Party Transaction [Line Items]            
Line of credit facility maximum borrowing capacity           2,250
Tranche One, Shared with Related Party [Member] | Senior secured credit facility            
Related Party Transaction [Line Items]            
Line of credit facility maximum borrowing capacity           $ 400
Line of Credit Facility, Fair Value of Amount Outstanding $ 267