Quarterly report pursuant to Section 13 or 15(d)

Tracking Stock (Details)

v2.4.0.8
Tracking Stock (Details) (USD $)
0 Months Ended
Sep. 30, 2014
item
Dec. 31, 2013
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2014
Interactive Group
Dec. 31, 2013
Interactive Group
Sep. 30, 2013
Interactive Group
Dec. 31, 2012
Interactive Group
Sep. 30, 2014
Interactive Group
HSN, Inc.
Oct. 10, 2013
Interactive Group
HSN, Inc.
Oct. 03, 2014
Interactive Group
Reattribution Transaction
Ventures Group
Subsequent Event [Member]
Oct. 03, 2014
Interactive Group
QVC Bank Credit Facilities
Subsequent Event [Member]
Sep. 30, 2014
Ventures Group
Dec. 31, 2013
Ventures Group
Sep. 30, 2013
Ventures Group
Dec. 31, 2012
Ventures Group
Oct. 03, 2014
Ventures Group
Common Class A
Subsequent Event [Member]
Oct. 03, 2014
Ventures Group
Reattribution Transaction
Subsequent Event [Member]
Targeted or Tracking Stock, Stock [Line Items]                                    
Number of tracking stocks 2                                  
Cash and cash equivalents $ 1,606,000,000 $ 902,000,000 $ 700,000,000 $ 2,291,000,000 $ 733,000,000 $ 595,000,000 $ 450,000,000 $ 698,000,000         $ 873,000,000 $ 307,000,000 $ 250,000,000 $ 1,593,000,000    
Reattributed Assets transferred, excluding cash                     1,500,000,000              
Total cash reattributed                     1,000,000,000              
Cash reattributed as part of Reattributed Assets                     970,000,000              
Cash reattributed outside of Reattributed Assets                     30,000,000              
Ratio applied to the reattribution                     0.14217              
Total fair value of Reattributed Assets                                   2,470,000,000
Average of the high and low sales prices of stock                                 $ 36.50  
Number of shares issuable in connection with asset reattribution                                   67,671,232
Equity Method Investment, Ownership Percentage                 38.00% 38.00%                
Line of Credit Facility, Amount Outstanding                       $ 1,060,000,000