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Nature of Business - Additional Information (Detail)
12 Months Ended
Jan. 31, 2015
Store
Jan. 31, 2014
Store
Nature Of Business [Line Items]    
Number of stores for operations 546us-gaap_NumberOfStores 511us-gaap_NumberOfStores
Number of department and specialty retailers distributed and sold apparel to 1,600urbn_NumberOfApparelSoldAndDistributed  
United States    
Nature Of Business [Line Items]    
Number of stores for operations 464us-gaap_NumberOfStores
/ us-gaap_StatementGeographicalAxis
= country_US
442us-gaap_NumberOfStores
/ us-gaap_StatementGeographicalAxis
= country_US
Europe    
Nature Of Business [Line Items]    
Number of stores for operations 50us-gaap_NumberOfStores
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
44us-gaap_NumberOfStores
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
Canada    
Nature Of Business [Line Items]    
Number of stores for operations 32us-gaap_NumberOfStores
/ us-gaap_StatementGeographicalAxis
= country_CA
25us-gaap_NumberOfStores
/ us-gaap_StatementGeographicalAxis
= country_CA