Note 7 - Shareholders' Equity (Details) - USD ($) $ in Thousands, shares in Millions	3 Months Ended		126 Months Ended
	May. 30, 2015	May. 31, 2014	May. 30, 2015	Jul. 31, 2014
Stockholders' Equity Note [Abstract]
Stock Repurchase Program, Authorized Amount				$ 9,450,000
Treasury Stock, Shares, Acquired (in Shares)	5.3		167.8
Payments for Repurchase of Common Stock	$ 385,349	$ 272,883	$ 9,000,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 500,000		$ 500,000