Leases (Narrative) (Details) ft² in Thousands, $ in Millions	12 Months Ended
	Jan. 30, 2021 ft² warehouse number_of_store option	Feb. 02, 2019 USD ($)
Operating Leased Assets [Line Items]
Number of store sites owned | number_of_store	2
Renewal option term of leases	5 years
Operating leases, ASC 840, rent expense | $		$ 569.8
Los Angeles
Operating Leased Assets [Line Items]
Square feet of office space leased | ft²	120
Boston
Operating Leased Assets [Line Items]
Square feet of office space leased | ft²	5
Warehouse
Operating Leased Assets [Line Items]
Number of leased distribution centers/warehouses | warehouse	10
Minimum
Operating Leased Assets [Line Items]
Non-cancelable lease term	3 years
Number of options to renew store lease for five year period | option	3
Maximum
Operating Leased Assets [Line Items]
Non-cancelable lease term	10 years
Number of options to renew store lease for five year period | option	4