Goodwill and Intangibles - Summary of Goodwill (Details) - USD ($)	3 Months Ended		12 Months Ended
	Feb. 02, 2019	May 05, 2018	Feb. 02, 2019	Feb. 03, 2018
Goodwill [Roll Forward]
Beginning balance		$ 821,700,000	$ 821,700,000	$ 517,600,000
Acquisitions				301,700,000
Impairment		286,700,000	(521,200,000)	0
Impact of foreign exchange			(3,900,000)	2,400,000
Ending balance	$ 296,600,000		296,600,000	821,700,000
Purchase accounting adjustments			2,600,000
North America
Goodwill [Roll Forward]
Beginning balance		818,100,000	818,100,000	514,000,000
Acquisitions				301,700,000
Impairment	208,800,000	308,800,000	(517,600,000)
Impact of foreign exchange			(3,900,000)	2,400,000
Ending balance	296,600,000		296,600,000	818,100,000
Other
Goodwill [Roll Forward]
Beginning balance		$ 3,600,000	3,600,000	3,600,000
Acquisitions				0
Impairment			(3,600,000)
Impact of foreign exchange			0	0
Ending balance	$ 0		$ 0	$ 3,600,000