Shareholders' Equity - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended			0 Months Ended
	Aug. 02, 2014	May 03, 2014	Jul. 27, 2013	May 15, 2007 Maximum	Aug. 02, 2014 Stock Repurchase Program
Class of Stock [Line Items]
Number of shares authorized to be repurchase				$ 400,000
Remaining authorized repurchase amount	2,471
Treasury stock, shares	34,402,000	34,364,000	34,248,000		34,401,814
Treasury stock, at cost	$ 1,069,789	$ 1,069,109	$ 1,066,932		$ 1,069,789