Business Segments - Summary of Sales by Merchandise Category Related to Retail Trade and Electronic Commerce Trade Segments (Detail)	3 Months Ended		9 Months Ended
	Nov. 01, 2014	Nov. 02, 2013	Nov. 01, 2014	Nov. 02, 2013
Revenue from External Customer [Line Items]
Percentage of total net sales	100.00%	100.00%	100.00%	100.00%
Books and magazines [Member]
Revenue from External Customer [Line Items]
Percentage of total net sales	70.60%	71.40%	71.00%	73.50%
General Merchandise [Member]
Revenue from External Customer [Line Items]
Percentage of total net sales	12.90%	11.70%	12.70%	11.90%
Cafe and yogurt [Member]
Revenue from External Customer [Line Items]
Percentage of total net sales	5.70%	6.30%	5.70%	5.30%
Electronics, eBooks and Accessories [Member]
Revenue from External Customer [Line Items]
Percentage of total net sales	1.10%	1.70%	1.20%	2.00%
Media [Member]
Revenue from External Customer [Line Items]
Percentage of total net sales	4.50%	3.50%	4.20%	3.20%
Other [Member]
Revenue from External Customer [Line Items]
Percentage of total net sales	5.20%	5.40%	5.20%	4.10%