Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Narrative) (Details)

v3.19.1
Long-Term Debt (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Sep. 13, 2018
Dec. 31, 2017
Jun. 23, 2016
Jun. 15, 2016
Mar. 18, 2014
Debt Instrument [Line Items]              
Line of Credit Facility, Remaining Borrowing Capacity $ 2,190            
Line of Credit Facility, Interest Rate at Period End 3.90%            
Line of credit facility, maximum borrowing capacity   $ 3,650     $ 2,650    
Derivative, Notional Amount           $ 125  
Derivative Asset, Current $ 1            
Line of Credit Facility, Standby Letter of Credit   450          
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 4.60%            
Tranche One, Shared with Related Party | Senior secured credit facility              
Debt Instrument [Line Items]              
Line of credit facility, maximum borrowing capacity   400     $ 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   3,250          
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%            
3.125% Senior Secured Notes due 2019, net of original issue discount              
Debt Instrument [Line Items]              
Debt Instrument, Interest Rate, Stated Percentage 3.125%           3.125%
Debt and Capital Lease Obligations $ 399 399          
6.375% Senior Secured Notes [Member]              
Debt Instrument [Line Items]              
Debt Instrument, Interest Rate, Stated Percentage     6.375%        
Debt Instrument, Call Feature P5Y            
Debt and Capital Lease Obligations $ 225 $ 225 $ 0        
HSN, Inc. [Member]              
Debt Instrument [Line Items]              
Derivative, Notional Amount       $ 250      
Derivative, Fixed Interest Rate       1.05%      
250 million interest rate swap [Member]              
Debt Instrument [Line Items]              
Derivative Asset, Current $ 2