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Computation of Earnings Per Share - Schedule of Basic and Diluted Earnings per Common Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Feb. 28, 2023
Feb. 28, 2022
Feb. 28, 2023
Feb. 28, 2022
Basic earnings per common share:        
Net earnings allocable to common shares [1] $ 770 $ 1,110 $ 2,430 $ 3,262
Weighted-average common shares 251.0 261.0 255.0 264.0
Basic earnings per common share $ 3.07 $ 4.26 $ 9.52 $ 12.36
Diluted earnings per common share:        
Net earnings allocable to common shares [1] $ 770 $ 1,110 $ 2,430 $ 3,262
Weighted-average common shares 251.0 261.0 255.0 264.0
Dilutive effect of share-based awards 2.0 4.0 2.0 4.0
Weighted-average diluted shares 253.0 265.0 257.0 268.0
Diluted earnings per common share $ 3.05 $ 4.20 $ 9.46 $ 12.17
Anti-dilutive options excluded from diluted earnings per common share 7.8 4.4 7.7 3.8
[1] Net earnings available to participating securities were immaterial in all periods presented.