Business Segments - Summary of Sales by Merchandise Category Related to Retail Trade and Electronic Commerce Trade Segments (Detail)	3 Months Ended		6 Months Ended
	Aug. 01, 2015	Aug. 02, 2014	Aug. 01, 2015	Aug. 02, 2014
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	69.70%	71.60%	69.00%	71.20%
General Merchandise [Member]
Revenue from External Customer [Line Items]
Percentage of total net sales	14.20%	12.40%	14.70%	12.60%
Cafe and yogurt [Member]
Revenue from External Customer [Line Items]
Percentage of total net sales	5.80%	5.70%	5.70%	5.70%
Electronics, eBooks and Accessories [Member]
Revenue from External Customer [Line Items]
Percentage of total net sales	1.20%	1.20%	1.20%	1.20%
Media [Member]
Revenue from External Customer [Line Items]
Percentage of total net sales	4.60%	4.10%	4.90%	4.10%
Other [Member]
Revenue from External Customer [Line Items]
Percentage of total net sales	4.50%	5.00%	4.50%	5.20%