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Award Grant, Vested and Forfeiture Transactions (Parenthetical) (Detail) $ in Millions	12 Months Ended
	Feb. 01, 2020 USD ($)
Restricted Stock Issuances
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation awards vested total intrinsic value	$ 60.1

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.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: