Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Narrative) (Details)

v3.8.0.1
Long-Term Debt (Narrative) (Details) - USD ($)
$ in Millions
Mar. 31, 2018
Jun. 23, 2016
Jun. 15, 2016
Debt Instrument [Line Items]      
Line of Credit Facility, Remaining Borrowing Capacity $ 1,235    
Line of Credit Facility, Interest Rate at Period End 3.20%    
Line of credit facility, maximum borrowing capacity   $ 2,650  
Derivative, Notional Amount     $ 125
Derivative Asset, Noncurrent $ 2    
Line of Credit Facility, Standby Letter of Credit   300  
Line of credit facility, uncommitted loan   1,500  
Debt Instrument, Lower Range of Basis Spread on Variable Rate 0.25%    
Debt Instrument, Higher Range of Basis Spread on Variable Rate 0.75%    
Debt, Weighted Average Interest Rate 4.30%    
Tranche One, Shared with Related Party | Senior secured credit facility      
Debt Instrument [Line Items]      
Line of credit facility, maximum borrowing capacity   400  
Tranche One, Shared with Related Party | Standby Letters of Credit      
Debt Instrument [Line Items]      
Line of Credit Facility, Standby Letter of Credit   50  
QVC | Senior secured credit facility      
Debt Instrument [Line Items]      
Line of credit facility, maximum borrowing capacity   2,250  
QVC Portion (Maturing on March 9, 2020) | Senior secured credit facility      
Debt Instrument [Line Items]      
Line of credit facility, maximum borrowing capacity   $ 140  
London Interbank Offered Rate (LIBOR)      
Debt Instrument [Line Items]      
Debt Instrument, Lower Range of Basis Spread on Variable Rate 1.25%    
Debt Instrument, Higher Range of Basis Spread on Variable Rate 1.75%