Intangible Assets (Changes In The Carrying Amount Of Goodwill) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($)
Goodwill [Roll Forward]
Balance, beginning of the year	$ 6,052
Foreign currency translation adjustments	51
Balance, end of the year	6,103
QVC
Goodwill [Roll Forward]
Balance, beginning of the year	5,110
Foreign currency translation adjustments	51
Balance, end of the year	5,161
zulily
Goodwill [Roll Forward]
Balance, beginning of the year	917
Balance, end of the year	917
Corporate and Other
Goodwill [Roll Forward]
Balance, beginning of the year	25
Balance, end of the year	$ 25