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CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Parenthetical) - $ / shares
Apr. 30, 2023
Apr. 30, 2022
Shareholders’ equity    
Preferred stock, par value (in dollars per share) $ 1 $ 1
Preferred stock, shares authorized (in shares) 2,000,000 2,000,000
Preferred stock, shares issued (in shares) 0 0
Class A    
Shareholders’ equity    
Common stock, par value (in dollars per share) $ 1 $ 1
Common stock, shares authorized (in shares) 180,000,000 180,000,000
Common stock, shares issued (in shares) 70,231,000 70,226,000
Treasury stock (in shares) 23,983,000 23,515,000
Class B    
Shareholders’ equity    
Common stock, par value (in dollars per share) $ 1 $ 1
Common stock, shares authorized (in shares) 72,000,000 72,000,000
Common stock, shares issued (in shares) 12,951,000 12,956,000
Treasury stock (in shares) 3,925,000 3,924,000