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Fair Value Measurements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jul. 28, 2012	Jul. 28, 2012 77kids store	Jul. 30, 2011 Significant Unobservable Inputs (Level 3)	Jul. 30, 2011 Significant Unobservable Inputs (Level 3) Minimum	Jul. 30, 2011 Significant Unobservable Inputs (Level 3) Maximum
Fair Value, Measurement Inputs, Disclosure [Line Items]
Discounted cash flow model to value Level 3 investments, assumptions, recovery period				2 months	11 months
Discounted cash flow model to value Level 3 investments, assumptions, discount yield			0.20%
Discounted cash flow model to value Level 3 investments, assumptions, illiquidity			0.50%
Impairment of assets	$ 17.1	$ 16.6

Provision recognizing a loss (after tax benefit) for initial, or subsequent, write-down to fair value (less cost to sell) of a disposal group that is classified as a component of the entity, which remains unsold as of the reporting date. May include the recognition of a (gain) (net of tax expense) for a subsequent increase in fair value (less cost to sell), but not in excess of the cumulative loss previously recognized through write-downs.

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