| Note C: Basic and Diluted Earnings Per Share   
Basic and diluted earnings per share were calculated as follows:   
       
        |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
        |   |   | For the three months ended |   |   | For the six months ended |   |  
        |   |   | November 30, |   |   | November 30, |   |  
        | In millions, except per share amounts |   | 2022 |   |   | 2021 |   |   | 2022 |   |   | 2021 |   |  
        | Basic earnings per share: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
        | Net income |   | $ |   | 360.3 |   |   | $ |   | 332.1 |   |   | $ |   | 739.5 |   |   | $ |   | 665.7 |   |  
        | Weighted-average common shares outstanding |   |   |   | 360.5 |   |   |   |   | 360.7 |   |   |   |   | 360.2 |   |   |   |   | 360.4 |   |  
        | Basic earnings per share |   | $ |   | 1.00 |   |   | $ |   | 0.92 |   |   | $ |   | 2.05 |   |   | $ |   | 1.85 |   |  
        | Diluted earnings per share: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
        | Net income |   | $ |   | 360.3 |   |   | $ |   | 332.1 |   |   | $ |   | 739.5 |   |   | $ |   | 665.7 |   |  
        | Weighted-average common shares outstanding |   |   |   | 360.5 |   |   |   |   | 360.7 |   |   |   |   | 360.2 |   |   |   |   | 360.4 |   |  
        | Dilutive effect of common share equivalents |   |   |   | 1.8 |   |   |   |   | 2.4 |   |   |   |   | 2.1 |   |   |   |   | 2.5 |   |  
        | Weighted-average common shares outstanding, assuming dilution |   |   |   | 362.3 |   |   |   |   | 363.1 |   |   |   |   | 362.3 |   |   |   |   | 362.9 |   |  
        | Diluted earnings per share |   | $ |   | 0.99 |   |   | $ |   | 0.91 |   |   | $ |   | 2.04 |   |   | $ |   | 1.83 |   |  
        | Weighted-average anti-dilutive common share equivalents |   |   |   | 0.9 |   |   |   |   | 0.4 |   |   |   |   | 0.7 |   |   |   |   | 0.3 |   |    Weighted-average common share equivalents that have an anti-dilutive impact are excluded from the computation of diluted earnings per share. |