Nature of Operations and Basis of Presentation (Detail) - store	Jan. 28, 2018	Aug. 20, 2017	Jan. 29, 2017	Jan. 31, 2016
Restructuring Cost and Reserve [Line Items]
Number of company-operated stores	404		406	363
ivivva
Restructuring Cost and Reserve [Line Items]
Number of stores, not expected to close		7
ivivva | Facility closing
Restructuring Cost and Reserve [Line Items]
Number of company-operated stores		55
Number of stores closed		48