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Company's Stockholders Equity (Parenthetical) (Detail) - USD ($) $ in Millions | 3 Months Ended
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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

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