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Summary of Restricted Stock Unit Activity (Parenthetical) (Detail) - Restricted Stock Units (RSUs) [Member]	6 Months Ended
	Aug. 04, 2019 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental shares released due to achievement of performance conditions	954,327	[1]
Achievement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental shares released due to achievement of performance conditions	105,436
[1] Excludes 105,436 incremental shares released due to achievement of performance conditions above target.

X

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

+ Details

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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