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Segment Reporting - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2012	Oct. 31, 2011
Segment Reporting Information [Line Items]
Number of reporting segments			2
Number of department and specialty retailers	1,400		1,400
Retail Operations
Segment Reporting Information [Line Items]
Number of brands	5		5
Number of stores	467		467
Number of catalogs	5		5
Number of web sites	10		10
Retail Operations | Minimum
Segment Reporting Information [Line Items]
Percentage of net sales	94.00%	94.00%	94.00%	94.00%
Retail stores and direct-to-consumer channels
Segment Reporting Information [Line Items]
Operation Segment			1

X

- Definition

Retail Segment net sales as a percentage of total consolidated Net Sales.

+ References

No definition available.

+ Details

Name:	urbn_NetSalesAsPercentageOfConsolidatedNetSales
Namespace Prefix:	urbn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number Of Brands

+ References

No definition available.

+ Details

Name:	urbn_NumberOfBrands
Namespace Prefix:	urbn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of Catalogs

+ References

No definition available.

+ Details

Name:	urbn_NumberOfCatalogs
Namespace Prefix:	urbn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of Department and Specialty Retailers

+ References

No definition available.

+ Details

Name:	urbn_NumberOfDepartmentAndSpecialtyRetailers
Namespace Prefix:	urbn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of Websites

+ References

No definition available.

+ Details

Name:	urbn_NumberOfWebsites
Namespace Prefix:	urbn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfOperatingSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of stores.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfStores
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Details

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