Quarterly report pursuant to Section 13 or 15(d)

Guarantor/Non-Guarantor Subsidiary Financial Information (Effect of the Adjustment on Equity) (Details)

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Guarantor/Non-Guarantor Subsidiary Financial Information (Effect of the Adjustment on Equity) (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items]      
Equity $ 6,238 $ 6,834 $ 8,019
As previously reported
     
Condensed Financial Statements, Captions [Line Items]      
Equity   6,834 8,019
Adjustment
     
Condensed Financial Statements, Captions [Line Items]      
Equity   0 0
Parent issuer- QVC, Inc.
     
Condensed Financial Statements, Captions [Line Items]      
Equity 6,102 6,690 7,890
Parent issuer- QVC, Inc. | As previously reported
     
Condensed Financial Statements, Captions [Line Items]      
Equity   6,690 7,890
Parent issuer- QVC, Inc. | Adjustment
     
Condensed Financial Statements, Captions [Line Items]      
Equity   0 0
Combined subsidiary guarantors
     
Condensed Financial Statements, Captions [Line Items]      
Equity 4,290 4,466 3,915
Combined subsidiary guarantors | As previously reported
     
Condensed Financial Statements, Captions [Line Items]      
Equity   4,061 3,465
Combined subsidiary guarantors | Adjustment
     
Condensed Financial Statements, Captions [Line Items]      
Equity   405 450
Combined non-guarantor subsidiaries
     
Condensed Financial Statements, Captions [Line Items]      
Equity 2,377 2,360 2,181
Combined non-guarantor subsidiaries | As previously reported
     
Condensed Financial Statements, Captions [Line Items]      
Equity   1,710 1,716
Combined non-guarantor subsidiaries | Adjustment
     
Condensed Financial Statements, Captions [Line Items]      
Equity   650 465
Eliminations
     
Condensed Financial Statements, Captions [Line Items]      
Equity (6,531) (6,682) (5,967)
Eliminations | As previously reported
     
Condensed Financial Statements, Captions [Line Items]      
Equity   (5,627) (5,052)
Eliminations | Adjustment
     
Condensed Financial Statements, Captions [Line Items]      
Equity   $ (1,055) $ (915)