Information About Liberty's Operating Segments (Performance Measures By Segment) (Details) (USD $) In Millions	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Total revenues	$ 2,133	$ 1,968	$ 6,537	$ 6,046
Adjusted OIBDA	377	373	1,205	1,182
QVC [Member]
Total revenues	1,886	1,771	5,619	5,286
Adjusted OIBDA	373	369	1,154	1,138
Corporate And Other [Member]
Total revenues	0	0	0	0
Adjusted OIBDA	(5)	(6)	(23)	(12)
E-commerce [Member]
Total revenues	247	197	918	760
Adjusted OIBDA	$ 9	$ 10	$ 74	$ 56

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 03

-Paragraph 1

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration