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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		8 Months Ended
	May 04, 2019	May 05, 2018	May 04, 2019	May 05, 2018
Income Tax Disclosure [Abstract]
Effective tax rate	19.50%	27.20%	19.80%	14.80%
U.S. corporate income tax rate	21.00%	25.90%
Income Tax Expense Benefit From Stock Option Exercises	$ 13.1		$ 38.2	$ 27.2
One-time mandatory transition tax benefit			$ 111.9

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- Definition

Income tax expense (benefit) from stock option exercises.

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One-time mandatory transition tax on cumulative foreign subsidiary earnings.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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-Topic 740
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