Useful Lives of Major Classes of Assets (Detail)	12 Months Ended
	Jan. 28, 2012 Year
Buildings
Property, Plant and Equipment, Estimated Useful Lives, Lease Terms [Line Items]
Useful lives in asset class	25
Leasehold Improvements
Property, Plant and Equipment, Estimated Useful Lives, Lease Terms [Line Items]
Useful lives in asset class	Lesser of 10 years or the term of the lease
Useful lives in asset class, maximum	10
Fixtures and equipment
Property, Plant and Equipment, Estimated Useful Lives, Lease Terms [Line Items]
Useful lives in asset class	5