Information About Liberty's Operating Segments (Performance Measures By Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Total revenues	$ 2,365	$ 2,245	$ 4,679	$ 4,404
Adjusted OIBDA	455	450	873	828
QVC [Member]
Total revenues	1,974	1,898	3,906	3,733
Adjusted OIBDA	438	418	828	781
E-commerce [Member]
Total revenues	391	347	773	671
Adjusted OIBDA	23	36	57	65
Expedia [Member]
Total revenues			1,856	1,641
Adjusted OIBDA	222	194	325	282
Corporate And Other [Member]
Total revenues	0	0	0	0
Adjusted OIBDA	(6)	(4)	(12)	(18)
equity method elimination [Member]
Total revenues	(1,040)	(913)	(1,856)	(1,641)
Adjusted OIBDA	$ (222)	$ (194)	$ (325)	$ (282)