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

Quarterly report pursuant to Section 13 or 15(d)

Business and basis of presentation (Details)

Business and basis of presentation (Details)	Jul. 30, 2011
Business And Basis Of presentation [Line Items]
Number of Stores	415
Business and basis of presentation (Textuals) [Abstract]
Number of States in which Entity Operates	42
Alabama [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	7
Arizona [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	23
Arkansas [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	3
California [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	36
Colorado [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	11
Connecticut [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	3
Delaware [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	1
Florida [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	30
Georgia [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	18
Idaho [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	1
Illinois [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	35
Indiana [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	8
Iowa [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	4
Kansas [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	3
Kentucky [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	4
Louisiana [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	3
Maine [ Member]
Business And Basis Of presentation [Line Items]
Number of Stores	2
Maryland [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	6
Massachusetts [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	5
Michigan [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	12
Minnesota [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	9
Mississippi [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	3
Missouri [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	4
Nebraska [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	2
Nevada [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	6
New Hampshire [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	1
New Jersey [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	12
New Mexico [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	1
New York [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	13
North Carolina [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	16
Ohio [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	12
Oklahoma [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	7
Oregon [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	5
Pennsylvania [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	18
Rhode Island [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	1
South Carolina [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	6
Tennessee [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	5
Texas [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	54
Utah [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	3
Virginia [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	11
Washington [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	6
Wisconsin [Member]
Business And Basis Of presentation [Line Items]
Number of Stores	5