Quarterly report pursuant to Section 13 or 15(d)

Recent Accounting Pronouncements (Revenue Disaggregation) (Details)

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Recent Accounting Pronouncements (Revenue Disaggregation) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2018
Disaggregation of Revenue [Line Items]    
Net revenue $ 3,233 $ 6,463
Maximum sales return period   30 days
Home    
Disaggregation of Revenue [Line Items]    
Net revenue 1,196 $ 2,445
Apparel    
Disaggregation of Revenue [Line Items]    
Net revenue 668 1,289
Beauty    
Disaggregation of Revenue [Line Items]    
Net revenue 486 948
Accessories    
Disaggregation of Revenue [Line Items]    
Net revenue 434 851
Electronics    
Disaggregation of Revenue [Line Items]    
Net revenue 191 394
Jewelry    
Disaggregation of Revenue [Line Items]    
Net revenue 171 370
Other    
Disaggregation of Revenue [Line Items]    
Net revenue 87 166
QVC International    
Disaggregation of Revenue [Line Items]    
Net revenue 656 1,332
QVC International | Home    
Disaggregation of Revenue [Line Items]    
Net revenue 235 495
QVC International | Apparel    
Disaggregation of Revenue [Line Items]    
Net revenue 116 235
QVC International | Beauty    
Disaggregation of Revenue [Line Items]    
Net revenue 158 302
QVC International | Accessories    
Disaggregation of Revenue [Line Items]    
Net revenue 72 139
QVC International | Electronics    
Disaggregation of Revenue [Line Items]    
Net revenue 22 48
QVC International | Jewelry    
Disaggregation of Revenue [Line Items]    
Net revenue 48 103
QVC International | Other    
Disaggregation of Revenue [Line Items]    
Net revenue 5 10
QVC U.S.    
Disaggregation of Revenue [Line Items]    
Net revenue 1,427 2,844
QVC U.S. | Home    
Disaggregation of Revenue [Line Items]    
Net revenue 454 953
QVC U.S. | Apparel    
Disaggregation of Revenue [Line Items]    
Net revenue 332 612
QVC U.S. | Beauty    
Disaggregation of Revenue [Line Items]    
Net revenue 250 489
QVC U.S. | Accessories    
Disaggregation of Revenue [Line Items]    
Net revenue 194 380
QVC U.S. | Electronics    
Disaggregation of Revenue [Line Items]    
Net revenue 88 175
QVC U.S. | Jewelry    
Disaggregation of Revenue [Line Items]    
Net revenue 76 171
QVC U.S. | Other    
Disaggregation of Revenue [Line Items]    
Net revenue 33 64
HSN    
Disaggregation of Revenue [Line Items]    
Net revenue 473 982
HSN | Home    
Disaggregation of Revenue [Line Items]    
Net revenue 197 424
HSN | Apparel    
Disaggregation of Revenue [Line Items]    
Net revenue 24 51
HSN | Beauty    
Disaggregation of Revenue [Line Items]    
Net revenue 66 133
HSN | Accessories    
Disaggregation of Revenue [Line Items]    
Net revenue 58 108
HSN | Electronics    
Disaggregation of Revenue [Line Items]    
Net revenue 77 163
HSN | Jewelry    
Disaggregation of Revenue [Line Items]    
Net revenue 36 73
HSN | Other    
Disaggregation of Revenue [Line Items]    
Net revenue 15 30
zulily    
Disaggregation of Revenue [Line Items]    
Net revenue 415 834
zulily | Home    
Disaggregation of Revenue [Line Items]    
Net revenue 107 223
zulily | Apparel    
Disaggregation of Revenue [Line Items]    
Net revenue 163 319
zulily | Beauty    
Disaggregation of Revenue [Line Items]    
Net revenue 12 24
zulily | Accessories    
Disaggregation of Revenue [Line Items]    
Net revenue 110 224
zulily | Electronics    
Disaggregation of Revenue [Line Items]    
Net revenue 4 8
zulily | Jewelry    
Disaggregation of Revenue [Line Items]    
Net revenue 11 23
zulily | Other    
Disaggregation of Revenue [Line Items]    
Net revenue 8 13
Corporate and Other    
Disaggregation of Revenue [Line Items]    
Net revenue 262 471
Corporate and Other | Home    
Disaggregation of Revenue [Line Items]    
Net revenue 203 350
Corporate and Other | Apparel    
Disaggregation of Revenue [Line Items]    
Net revenue 33 72
Corporate and Other | Other    
Disaggregation of Revenue [Line Items]    
Net revenue $ 26 $ 49