Goodwill and Intangible Assets and Liabilities - 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
Goodwill and Intangible Assets Disclosure [Line Items]
Impairment for goodwill	$ 0	$ 0	$ 0	$ 0
Cost of Goods Sold
Goodwill and Intangible Assets Disclosure [Line Items]
Net amortization income recorded in cost of goods sold	0.4	0.5	0.8	1.0
Selling, General and Administrative Expenses
Goodwill and Intangible Assets Disclosure [Line Items]
Amortization expense recorded in selling, general and administrative expenses	$ 0.4	$ 4.4	$ 2.6	$ 8.7