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v2.4.1.9

Segment Reporting - Additional Information (Detail) | 12 Months Ended
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Jan. 31, 2015 | Jan. 31, 2014 Segment Brand Store | Jan. 31, 2013
Segment Reporting Information [Line Items] |  |  |
Number of stores | 546 us-gaap_NumberOfStores | 511 us-gaap_NumberOfStores |
Number of major customers exceeding ten percentage thresholds | 0 urbn_NumberOfMajorCustomersExceedingTenPercentageThreshold |  |
Retail Operations |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of reporting segments |  | 2 us-gaap_NumberOfOperatingSegments / us-gaap_StatementBusinessSegmentsAxis = urbn_RetailOperationsMember |
Number of brands |  | 5 urbn_NumberOfBrands / us-gaap_StatementBusinessSegmentsAxis = urbn_RetailOperationsMember |
Number of stores |  | 546 us-gaap_NumberOfStores / us-gaap_StatementBusinessSegmentsAxis = urbn_RetailOperationsMember |
Percentage of net sales | 93.00%urbn_NetSalesAsPercentageOfConsolidatedNetSales / us-gaap_StatementBusinessSegmentsAxis = urbn_RetailOperationsMember | 93.00%urbn_NetSalesAsPercentageOfConsolidatedNetSales / us-gaap_StatementBusinessSegmentsAxis = urbn_RetailOperationsMember | 93.00%urbn_NetSalesAsPercentageOfConsolidatedNetSales / us-gaap_StatementBusinessSegmentsAxis = urbn_RetailOperationsMember
Wholesale Operations |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of stores |  | 1,600 us-gaap_NumberOfStores / us-gaap_StatementBusinessSegmentsAxis = urbn_WholesaleOperationsMember |

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- 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

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- 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

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- Definition Number Of Major Customers Exceeding Ten Percentage Threshold + References No definition available. + Details
Name: | urbn_NumberOfMajorCustomersExceedingTenPercentageThreshold
Namespace Prefix: | urbn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- 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

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- 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

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- 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=urbn_RetailOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=urbn_WholesaleOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |