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Information about QVC's Operating Segments Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
QVC-International
Segment Reporting Information [Line Items]
Segment Cost Allocation	$ 36	$ 31

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- Definition

Segment Cost Allocation - Allocation of certain corporate costs, such as merchandising, commerce platforms, information technology, human resources, legal, finance, brand and communications, corporate development and administration, to the market in which the benefits are received from the US segment or corporate.

+ References

No definition available.

+ Details

Name:	qvc_SegmentCostAllocation
Namespace Prefix:	qvc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=qvc_QVCInternationalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: