Amount of the cumulative effect on retained earnings net of related income tax effect.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794

Name:	us-gaap_CumulativeEffectOnRetainedEarningsNetOfTax1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Significant Accounting Policies - Recently Issued Accounting Standards (Detail) - USD ($) $ in Millions		12 Months Ended
	Feb. 04, 2018	Feb. 02, 2019	Feb. 03, 2018
As Reported
Recently Issued Accounting Standards
Decrease to retained earnings		$ 4.0	$ 4.0
Accounting Standards Update 2014-09 \| Adjustments
Recently Issued Accounting Standards
Decrease to retained earnings	$ 21.0