Ulta Beauty, Inc. Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Oct. 30, 2021	Oct. 31, 2020	Oct. 30, 2021	Oct. 31, 2020
Income Taxes
Income tax expense	$ 68,537	$ 25,096	$ 224,203	$ 2,935
Effective tax rate (as a percent)	24.10%	25.10%	24.40%	40.30%

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.