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CONSOLIDATED CONDENSED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $)
Jul. 31, 2011
May 01, 2011
Shareholders' equity:    
Preferred stock, par value (in dollars per share) $ 1.00 $ 1.00
Preferred stock, authorized shares (in shares) 1,000,000 1,000,000
Common stock, par value (in dollars per share) $ 0.50 $ 0.50
Common stock, authorized shares (in shares) 500,000,000 500,000,000
Common stock, shares issued (in shares) 164,932,520 166,080,231
Common stock, shares outstanding (in shares) 164,932,520 166,080,231