Quarterly report pursuant to Section 13 or 15(d)

Notes Payable - Additional Information (Detail)

v2.4.1.9
Notes Payable - Additional Information (Detail) (USD $)
3 Months Ended
May 02, 2015
Jan. 31, 2015
May 03, 2014
Line of Credit Facility [Line Items]      
Letters of credit, maximum borrowing capacity $ 200,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity    
Additional credit available under the revolving facility with consent by each lender and other conditions 50,000,000ulta_AdditionalCreditAvailableUnderRevolvingFacilityWithConsentByEachLenderAndOtherConditions    
Interest rate on outstanding borrowing under facility LIBOR plus 1.50%    
Percentage of unused Line of Credit Facility Fee 0.20%ulta_PercentageOfUnusedLineOfCreditFacilityFee    
Outstanding debt under credit facility 0us-gaap_LineOfCredit 0us-gaap_LineOfCredit 0us-gaap_LineOfCredit
Subfacility for Standby Letters of Credit [Member]      
Line of Credit Facility [Line Items]      
Letters of credit, maximum borrowing capacity $ 10,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_StandbyLettersOfCreditMember