Summary of Long-Term Debt and Capital Lease Obligations (Detail) (USD $) In Millions, unless otherwise specified	Jul. 28, 2012		Jan. 28, 2012		Jul. 30, 2011
Debt Instrument [Line Items]
Total debt	$ 607.4		$ 609.9		$ 662.1
Less: current maturities of long-term debt	5.1		5.1		5.1
Long-term debt	602.3		604.8		657.0
Term Loan Facility
Debt Instrument [Line Items]
Total debt	481.8	[1]	484.4	[1]	486.8	[1]
Senior Subordinated Notes
Debt Instrument [Line Items]
Total debt	124.7	[2]	124.6	[2]	174.3	[2]
Capital-Lease Obligations
Debt Instrument [Line Items]
Total debt	$ 0.9		$ 0.9		$ 1.0

[1] As of July 28, 2012, July 30, 2011 and January 28, 2012, the fair value of the Company's Term Loan Facility was $480.0 million, $478.4 million and $479.5 million, respectively, based on quoted market prices for similar issues with similar remaining maturities. The fair value of the Company's Term Loan Facility is valued using level 2 measurements as defined in the Fair Value Measurements footnote.

[2] As of July 28, 2012, July 30, 2011 and January 28, 2012, the fair value of the Company's Senior Subordinated Notes was $125.5 million, $175.6 million and $125.6 million, respectively, based on trading activity as of those dates. The fair value of the Company's Senior Subordinated Notes is valued using level 1 measurements as defined in the Fair Value Measurements footnote.