Goodwill and Intangibles - Additional Information (Details) - USD ($)		12 Months Ended
	Sep. 12, 2017	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Finite-Lived Intangible Assets [Line Items]
Acquisitions		$ 301,700,000
Goodwill, impairment loss		0	$ 0
Amortization of intangible assets		9,300,000	13,800,000	$ 13,900,000
Amortization of intangible liabilities		$ 13,000,000	$ 19,700,000	$ 28,700,000
R2Net Inc.
Finite-Lived Intangible Assets [Line Items]
Acquisitions	$ 301,700,000