Ulta Beauty, Inc. Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Provision for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jan. 31, 2015	Nov. 01, 2014	Aug. 02, 2014	May 03, 2014	Feb. 01, 2014	Nov. 02, 2013	Aug. 03, 2013	May 04, 2013	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Current:
Federal									$ 128,159us-gaap_CurrentFederalTaxExpenseBenefit	$ 105,731us-gaap_CurrentFederalTaxExpenseBenefit	$ 83,606us-gaap_CurrentFederalTaxExpenseBenefit
State									16,909	15,310	14,832
Total current									145,068us-gaap_CurrentIncomeTaxExpenseBenefit	121,041us-gaap_CurrentIncomeTaxExpenseBenefit	98,438us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred:
Federal									8,392	3,891	8,950
State									714	(75)	(144)
Total deferred									9,106ulta_ProvisionForDeferredIncomeTax	3,816ulta_ProvisionForDeferredIncomeTax	8,806ulta_ProvisionForDeferredIncomeTax
Provision for income taxes	$ 50,434us-gaap_IncomeTaxExpenseBenefit	$ 35,218us-gaap_IncomeTaxExpenseBenefit	$ 37,394us-gaap_IncomeTaxExpenseBenefit	$ 31,128us-gaap_IncomeTaxExpenseBenefit	$ 43,525us-gaap_IncomeTaxExpenseBenefit	$ 27,464us-gaap_IncomeTaxExpenseBenefit	$ 27,975us-gaap_IncomeTaxExpenseBenefit	$ 25,893us-gaap_IncomeTaxExpenseBenefit	$ 154,174us-gaap_IncomeTaxExpenseBenefit	$ 124,857us-gaap_IncomeTaxExpenseBenefit	$ 107,244us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.