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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		11 Months Ended
	Aug. 04, 2018	Jul. 29, 2017	Aug. 04, 2018	Jul. 29, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Effective income tax rate	21.90%	34.00%	21.90%	33.20%
U.S. federal corporate tax rate			21.00%		35.00%
Unrecognized tax benefits, decrease resulting from settlements with taxing authorities	$ 1.7
Reasonably possible amount of reduction in unrecognized tax benefit over the next twelve months	$ 3.1		$ 3.1

X

- Definition

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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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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