Stockholders' Equity (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended		12 Months Ended
	Aug. 31, 2012	Jun. 08, 2011	Feb. 02, 2014	Feb. 03, 2013	Aug. 27, 2012	Jul. 29, 2012
Stockholders' Equity Note [Abstract]
Number of shares per share after stock split		2
Common stock shares authorized before stock split		200,000,000
Common stock, shares authorized		400,000,000	400,000,000	400,000,000
Special voting stock shares authorized before stock split		30,000,000
Special voting stock, authorized		60,000,000	60,000,000	60,000,000
Number of votes for the holders of special voting stock			1
Maturity period for conversion of exchangeable shares into common shares			July 26, 2047
Conversion of exchangeable shares into common shares, maximum conversion threshold			4,188
Purchased non-controlling interest	$ 26,013
Percentage of interest accounted						80.00%
Non-controlling interest, carrying amount	0				5,680
Purchase of non-controlling interest, decrease in equity	$ 20,333			$ 26,013