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Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012	Feb. 02, 2013
Income Taxes [Line Items]
Net unrecognized tax benefits	$ 127.8	$ 119.5	$ 127.8	$ 119.5	$ 125.3
Effective income tax rate	37.90%	38.30%	38.00%	38.40%
Accrued amounts for interest and penalties	40.1	35.1	40.1	35.1	38.6
Possible decrease in unrecognized tax benefits that would reduce the provision for taxes on earnings, minimum	1.0		1.0
Possible decrease in unrecognized tax benefits that would reduce the provision for taxes on earnings, maximum	$ 50.0		$ 50.0

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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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The estimated lower bound of the reasonably possible change in the total amount of the unrecognized tax benefit (that will significantly increase or decrease within twelve months of the balance sheet date) for a tax position taken.

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The estimated upper bound of the reasonably possible change in the total amount of the unrecognized tax benefit (that will significantly increase or decrease within twelve months of the balance sheet date) for a tax position taken.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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