Annual report pursuant to Section 13 and 15(d)

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

v3.20.2
Stock-Based Compensation Plans (Stock Option Activity) (Details) - Stock Options [Member]
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
May 31, 2020
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Outstanding, Beginning balance, Shares subject to options | shares 4.3
Granted, Shares subject to options | shares 0.6
Exercised, Shares subject to options | shares (0.5)
Forfeited, Shares subject to options | shares
Expired, Shares subject to options | shares
Outstanding, Ending balance, Shares subject to options | shares 4.4
Exercisable, Shares subject to options | shares 3.1
Outstanding, Beginning balance, Weighted-average exercise price per share | $ / shares $ 49.23
Granted, Weighted-average exercise price per share | $ / shares 85.22
Exercised, Weighted-average exercise price per share | $ / shares 44.24
Forfeited, Weighted-average exercise price per share | $ / shares 72.17
Expired, Weighted-average exercise price per share | $ / shares 33.34
Outstanding, Ending balance, Weighted-average exercise price per share | $ / shares 55.02
Exercisable, Weighted-average exercise price per share | $ / shares $ 46.73
Outstanding, Weighted-average remaining contractual term (years) 5 years 7 months 6 days
Exercisable, Weighted-average remaining contractual term (years) 4 years 6 months
Outstanding, Aggregate intrinsic value | $ $ 83.7 [1]
Exercisable, Aggregate intrinsic value | $ $ 78.1 [1]
[1] Total shares valued at the market price of the underlying stock as of May 31, 2020 less the exercise price.