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Information about QVC's Operating Segments (Reconciliation of Adjusted OIBDA to Income before Income Taxes) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Segment Reporting [Abstract]    
Adjusted OIBDA $ 412 $ 404
Stock‑based compensation (8) (10)
Depreciation and amortization (144) (134)
Equity in (losses) earnings of investee (1) 1
Gains on financial instruments 0 12
Interest expense, net (62) (63)
Foreign currency loss (1) (1)
Loss on extinguishment of debt 0 (41)
Income before income taxes $ 196 $ 168