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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended			5 Months Ended		12 Months Ended
	Feb. 09, 2019	Feb. 10, 2018	Nov. 18, 2017	Feb. 09, 2019	Feb. 10, 2018	Aug. 25, 2019	Aug. 25, 2018
Income Tax Disclosure [Abstract]
Effective tax rate	17.80%	(74.70%)		20.00%	4.20%
Tax cuts and jobs act of 2017 change in tax rate deferred tax expense benefit	$ 111.9	$ 111.9				$ 25.8	$ 157.3
Effective income tax rate reconciliation, change in enacted tax rate, amount		24.2	$ 35.3
U.S. corporate income tax rate			35.00%		25.90%
Income Tax Expense Benefit From Stock Option Exercises	14.0	$ 32.1		$ 25.2	$ 26.8
Tax benefits associated with Staff Accounting	$ 8.8

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Income tax expense (benefit) from stock option exercises.

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Provisional amount of deferred tax expense (benefit) resulting from a change in the corporate tax rate due to the Tax Cuts and Job Act of 2017.

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Tax Cuts and Jobs Act of 2017, income tax expense (benefit) from staff accounting bulletin 118.

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

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

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

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