Common stock transactions (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands			3 Months Ended				12 Months Ended
	Mar. 08, 2016	Dec. 02, 2015	Jan. 29, 2016	Oct. 30, 2015	Jul. 31, 2015	May. 01, 2015	Jan. 29, 2016	Jan. 30, 2015	Jan. 31, 2014
Common stock transactions
Aggregate purchase price							$ 1,299,613	$ 800,095	$ 620,052
Cash dividend paid (in dollars per share)			$ 0.22	$ 0.22	$ 0.22	$ 0.22	$ 0.88
Cash dividend declared (in dollars per share)	$ 0.25
Common Stock
Common stock transactions
Shares acquired under share repurchase program							17,556	14,106	11,037
Aggregate purchase price							$ 15,361	$ 12,342	$ 9,657
Common Stock | Pursuant to Authorized Repurchase Program
Common stock transactions
Common stock repurchase program, increase in the authorized amount		$ 1,000,000
Common stock repurchase authorization			$ 4,000,000				4,000,000
Remaining authorization available under the common stock repurchase program			$ 923,800				$ 923,800
Shares acquired under share repurchase program							17,600	14,100	11,000
Aggregate purchase price							$ 1,300,000	$ 800,000	$ 600,000