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 Note C — Basic and Diluted Earnings Per Share 
Basic and diluted earnings per share were calculated as follows: 
  
      
       
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           | 
           | 
        Year ended May 31,  | 
           | 
        
       
        In millions, except per share amounts  | 
           | 
        2022  | 
           | 
           | 
        2021  | 
           | 
           | 
        2020  | 
           | 
        
       
        Basic earnings per share:  | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Net income  | 
           | 
        $  | 
           | 
        1,392.8  | 
           | 
           | 
        $  | 
           | 
        1,097.5  | 
           | 
           | 
        $  | 
           | 
        1,098.1  | 
           | 
        
       
        Weighted-average common shares outstanding  | 
           | 
           | 
           | 
        360.6  | 
           | 
           | 
           | 
           | 
        359.9  | 
           | 
           | 
           | 
           | 
        358.5  | 
           | 
        
       
        Basic earnings per share  | 
           | 
        $  | 
           | 
        3.86  | 
           | 
           | 
        $  | 
           | 
        3.05  | 
           | 
           | 
        $  | 
           | 
        3.06  | 
           | 
        
       
        Diluted earnings per share:  | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Net income  | 
           | 
        $  | 
           | 
        1,392.8  | 
           | 
           | 
        $  | 
           | 
        1,097.5  | 
           | 
           | 
        $  | 
           | 
        1,098.1  | 
           | 
        
       
        Weighted-average common shares outstanding  | 
           | 
           | 
           | 
        360.6  | 
           | 
           | 
           | 
           | 
        359.9  | 
           | 
           | 
           | 
           | 
        358.5  | 
           | 
        
       
        Dilutive effect of common share equivalents  | 
           | 
           | 
           | 
        2.5  | 
           | 
           | 
           | 
           | 
        2.2  | 
           | 
           | 
           | 
           | 
        2.5  | 
           | 
        
       
        Weighted-average common shares outstanding, assuming dilution  | 
           | 
           | 
           | 
        363.1  | 
           | 
           | 
           | 
           | 
        362.1  | 
           | 
           | 
           | 
           | 
        361.0  | 
           | 
        
       
        Diluted earnings per share  | 
           | 
        $  | 
           | 
        3.84  | 
           | 
           | 
        $  | 
           | 
        3.03  | 
           | 
           | 
        $  | 
           | 
        3.04  | 
           | 
        
       
        Weighted-average anti-dilutive common share equivalents  | 
           | 
           | 
           | 
        0.2  | 
           | 
           | 
           | 
           | 
        0.6  | 
           | 
           | 
           | 
           | 
        0.7  | 
           | 
        
       
 
  
Weighted-average common share equivalents that had an anti-dilutive impact are excluded from the computation of diluted earnings per share. 
   
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