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CONSOLIDATED CONDENSED BALANCE SHEETS (PARENTHETICAL) (Parentheticals) (USD $)
Jan. 27, 2013
Apr. 29, 2012
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) 138,763,415 157,408,077
Common stock, shares outstanding (in shares) 138,763,415 157,408,077