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Subsequent Event - Additional Information (Detail) (2014 Share Repurchase Program [Member], Subsequent Event [Member], USD $)
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Mar. 12, 2015
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2014 Share Repurchase Program [Member] | Subsequent Event [Member]
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| Subsequent Event [Line Items] | |
| Increase to the 2014 Share Repurchase Program authorization |
$ 100,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1 / us-gaap_ShareRepurchaseProgramAxis = ulta_ShareRepurchaseProgramTwoThousandAndFourteenMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |
| X | ||||||||||
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- Definition
Amount of stock repurchase plan authorized. No definition available.
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| X | ||||||||||
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- Details
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