Information About Qurate Retail's Operating Segments (Performance Measures By Segment) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues	$ 3,231	$ 2,381	$ 9,694	$ 7,060
Adjusted OIBDA	468	413	1,502	1,331
Corp and Other
Revenues	230	4	701	16
Adjusted OIBDA	(14)	(14)	(13)	(39)
Inter-group Eliminations
Revenues	(2)		(2)	(3)
QVC US | Operating Segments
Revenues	1,418	1,374	4,262	4,111
Adjusted OIBDA	324	316	1,005	1,013
QVC Int'l | Operating Segments
Revenues	640	636	1,972	1,843
Adjusted OIBDA	93	99	300	304
HSN | Operating Segments
Revenues	513		1,495
Adjusted OIBDA	47		136
zulily | Operating Segments
Revenues	432	367	1,266	1,093
Adjusted OIBDA	$ 18	$ 12	$ 74	$ 53