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Company's Stockholders Equity (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended
	Oct. 30, 2021	Jul. 31, 2021	May 01, 2021	Oct. 31, 2020	Aug. 01, 2020	May 02, 2020
Statement Of Stockholders Equity [Abstract]
Forfeited restricted shares	382	1,101	883	508	2,499	4,166
Unrealized gains (losses) on interest rate derivative contracts, Tax	$ 2.4	$ 1.9	$ 0.3	$ 0.2	$ 0.7	$ 3.6
Amount reclassified from accumulated other comprehensive loss into earnings on Interest Rate Cap Contracts, Tax	$ 1.1	$ 0.9	$ 0.8	$ 0.8	$ 0.8	0.4
Equity component of convertible notes issuance, related taxes						$ 44.1

X

- Definition

The tax effect of an increase or decrease in contributed capital (for example, deductible expenditures reported as a reduction of the proceeds from issuing capital stock) during the period charged or credited directly to shareholders' equity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

+ References

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- Definition

Amount of tax expense (benefit), before reclassification adjustments, related to increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

+ References

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Number of shares (or other type of equity) forfeited during the period.

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