Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation Plans (Other Information Pertaining to RSUs) (Details)

v3.22.2
Stock-Based Compensation Plans (Other Information Pertaining to RSUs) (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
May 31, 2022
May 31, 2021
May 31, 2020
Time-Based RSUs [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted-average grant-date fair value per share $ 109.81 [1] $ 67.92 $ 73.28
Weighted-average remaining vesting period (years) 2 years 9 months 18 days 3 years 2 years 10 months 24 days
Total intrinsic value of RSUs vested $ 54.7 $ 32.6 $ 40.0
Aggregate intrinsic value of nonvested RSUs [2] 165.2 152.7 99.9
Total grant-date fair value of RSUs vested $ 30.0 $ 25.6 $ 23.6
Performance-Based RSUs [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted-average grant-date fair value per share [3] $ 103.59 [1] $ 0 $ 80.59
Weighted-average remaining vesting period (years) [3] 1 year 1 year 1 month 6 days 2 years 1 month 6 days
Total intrinsic value of RSUs vested [3]
Aggregate intrinsic value of nonvested RSUs [2],[3] 14.7 6.2 4.4
Total grant-date fair value of RSUs vested [3]
[1] For performance-based RSUs, granted number assumes achievement of performance goals at target. Actual number of shares to be earned may differ from this amount.
[2] Based on the market price of the underlying common stock as of May 31, 2022, 2021 and 2020.
[3] No performance-based RSUs were granted during fiscal 2021.