Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Narrative) (Details)

v3.7.0.1
Long-Term Debt (Narrative) (Details) - Credit Agreement 1.25B [Member]
 6 Months Ended
Jan. 27, 2015
USD ($)
Jun. 30, 2017
USD ($)
Rate
Dec. 31, 2016
USD ($)
Jun. 30, 2016
USD ($)
Debt Instrument [Line Items]        
Secured credit $ 1,250,000,000.00      
Long-term Debt, Gross   $ 487,500,000 $ 515,000,000 $ 609,500,000
Deferred Finance Costs, Noncurrent, Net   $ 4,261,000 5,122,000 6,007,000
Debt Instrument, Term 5 years      
Maximum borrowing capacity $ 1,750,000,000.00      
Maximum leverage ratio, required 3.50      
Minimum interest coverage ratio, required 3.00      
Actual leverage ratio   1.8    
Actual interest coverage ratio   18.9    
Debt Instrument, Interest Rate, Effective Percentage | Rate   3.40%    
Long-term Debt [Member]        
Debt Instrument [Line Items]        
Secured credit $ 500,000,000 $ 462,500,000 475,000,000 487,500,000
Revolving credit facility [Member]        
Debt Instrument [Line Items]        
Secured credit   25,000,000 $ 40,000,000 $ 122,000,000
Revolving credit facility $ 750,000,000      
Letters of Credit Outstanding, Amount   8,200,000    
Line of Credit Facility, Remaining Borrowing Capacity   $ 474,200,000    
Minimum [Member]        
Debt Instrument [Line Items]        
Line of Credit Facility, Commitment Fee Percentage 0.20%      
Maximum [Member]        
Debt Instrument [Line Items]        
Line of Credit Facility, Commitment Fee Percentage 0.40%      
HSNi Subsidiaries [Member]        
Debt Instrument [Line Items]        
Secured rate 100.00%      
First Tier Subsidiaries [Member]        
Debt Instrument [Line Items]        
Secured rate 65.00%      
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.25%      
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.25%      
Base Rate [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 0.25%      
Base Rate [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 1.25%