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Tax Rate Reconciliations (Detail)	12 Months Ended
	Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018
Income Tax Disclosure [Abstract]
Tax at statutory rate	21.00%	21.00%	33.70%
State income taxes, net of federal	4.00%	4.20%	3.00%
Excess tax benefit from stock compensation	(5.30%)	(5.20%)	(4.40%)
Tax credits	(1.00%)	(1.20%)	(1.40%)
Impact of federal tax reform			(21.10%)
Other	1.20%	(0.50%)	0.50%
Effective tax rate	19.90%	18.30%	10.30%

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Effective income tax rate reconciliation, tax cuts and jobs act of 2017, impact of federal tax reform.

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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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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for share-based payment arrangement.

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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 applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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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 tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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