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Reconciliation of Income Taxes At Federal Statutory Rate to Effective Rate (Detail)	12 Months Ended
	Feb. 03, 2019	Jan. 28, 2018	Jan. 29, 2017
Reconciliation of Statutory Federal Tax Rate [Line Items]
Federal income taxes at the statutory rate	21.00%	33.90%	35.00%
Re-measurement of deferred tax assets / liabilities	(2.20%)	6.70%
Transition tax	(0.60%)	2.90%
State income tax rate	3.80%	2.50%	3.50%
Change in uncertain tax positions	4.10%	(1.60%)	2.80%
Rate differential	(2.30%)	(2.90%)	(5.70%)
Research and development credits	(2.10%)
Other	0.60%	1.10%	(0.30%)
Effective tax rate	22.30%	42.60%	35.30%

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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Percentage 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 changes in the income tax rates.

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Effective income tax rate reconciliation change in deferred tax assets and deferred tax liabilities.

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Reconciliation of Statutory Federal Tax Rate [Line Items]

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