Debt (Debt Securities That Are Not Reported At Fair Value) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long-term Debt, Fair Value	$ 1,140	$ 1,287
Senior Debentures
Debt Instrument [Line Items]
Fair Value of Debt Securities That Are Not Reported at Fair Value	891
QVC Senior Secured Notes
Debt Instrument [Line Items]
Fair Value of Debt Securities That Are Not Reported at Fair Value	$ 3,589

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

No definition available.

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant