Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation Plans (LTIP Performance-Based Stock Option Activity) (Details)

v3.21.2
Stock-Based Compensation Plans (LTIP Performance-Based Stock Option Activity) (Details) - LTIP Performance-Based Stock Options [Member]
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
May 31, 2021
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Outstanding, Beginning balance, Shares subject to options | shares 1.3
Granted, Shares subject to options | shares 0.2 [1]
Exercised, Shares subject to options | shares (0.8)
Outstanding, Ending balance, Shares subject to options | shares 0.7
Exercisable, Shares subject to options | shares 0.7
Outstanding, Beginning balance, Weighted-average exercise price per share | $ / shares $ 56.13
Granted, Weighted-average exercise price per share | $ / shares 60.92 [1]
Exercised, Weighted-average exercise price per share | $ / shares 53.34
Outstanding, Ending balance, Weighted-average exercise price per share | $ / shares 60.71
Exercisable, Weighted-average exercise price per share | $ / shares $ 60.71
Outstanding, Weighted-average remaining contractual term (years) 5 years
Exercisable, Weighted-average remaining contractual term (years) 5 years
Outstanding, Aggregate intrinsic value | $ $ 27.8 [2]
Exercisable, Aggregate intrinsic value | $ $ 27.8 [2]
[1] Shares issued above target achievement level upon final performance measurement.
[2] Shares valued at the market price of the underlying stock as of May 31, 2021 less the exercise price.