Goodwill and Intangibles - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Feb. 02, 2019	May 05, 2018	Feb. 02, 2019	Feb. 03, 2018	Jan. 28, 2017	Sep. 12, 2017
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 296,600,000		$ 296,600,000	$ 821,700,000	$ 517,600,000
Goodwill and intangible impairments		$ 448,700,000	735,400,000	0	0
Goodwill, impairment loss		286,700,000	(521,200,000)	0
Amortization of intangible assets			4,000,000	9,300,000	13,800,000
Amortization of intangible liabilities			7,900,000	13,000,000	19,700,000
R2Net Inc.
Finite-Lived Intangible Assets [Line Items]
Goodwill						$ 299,100,000
North America
Finite-Lived Intangible Assets [Line Items]
Goodwill	296,600,000		296,600,000	818,100,000	514,000,000
Goodwill and intangible impairments			731,800,000	$ 52,700,000	$ 160,400,000
Goodwill, impairment loss	208,800,000	308,800,000	$ (517,600,000)
Impairment of intangible assets (excluding goodwill)	74,300,000	$ 139,900,000
Other
Finite-Lived Intangible Assets [Line Items]
Goodwill, impairment loss	$ 3,600,000