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Information about QVC's Operating Segments (Revenue and Adjusted OIBDA by Segment) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Segment Reporting Information [Line Items]    
Net revenue $ 1,965 $ 2,013
Adjusted OIBDA 434 415
QVC-U.S.    
Segment Reporting Information [Line Items]    
Net revenue 1,370 1,407
Adjusted OIBDA 336 326
QVC-International    
Segment Reporting Information [Line Items]    
Net revenue 595 606
Adjusted OIBDA $ 98 $ 89