Leases - Narrative (Details) - USD ($) $ in Millions	Aug. 03, 2019	Feb. 02, 2019
Leases [Abstract]
Leases signed but not yet commenced	$ 266.4
Expected future minimum sublease rentals		$ 1.2

Contractually required future rental payments receivable on noncancelable subleasing arrangements.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant