Quarterly report pursuant to Section 13 or 15(d)

Earnings (Loss) Per Common Share (Earrings Per Share Basic and Diluted) (Details)

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Earnings (Loss) Per Common Share (Earrings Per Share Basic and Diluted) (Details) - shares
shares in Millions
2 Months Ended 3 Months Ended
Mar. 09, 2018
Mar. 31, 2018
Mar. 31, 2017
QVC Group      
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   11 14
Basic EPS (WA shares outstanding)   476 453
Potentially dilutive shares   5 2
Diluted EPS (WA shares outstanding)   481 455
Liberty Ventures common stock      
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   2  
Basic EPS (WA shares outstanding) 86   85
Potentially dilutive shares 1   1
Diluted EPS (WA shares outstanding) 87   86
Liberty Ventures common stock | Maximum      
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount     1