Capital Stock and Stock-Based Awards - Schedule of stock option activity for the Class A Stock and Common Stock plans (Details) $ / shares in Units, $ in Millions	12 Months Ended
	May 31, 2022 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Beginning balance, Outstanding (in shares) | shares	4,987,262
Granted (Shares) | shares	439,074
Exercised (Shares) | shares	(634,445)
Expired, cancellations and forfeited (Shares) | shares	(152,202)
Ending balance, Outstanding (in shares) | shares	4,639,689
Exercisable (Shares) at May 31, 2016 | shares	2,615,695
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Beginning balance, Outstanding (in dollars per share) | $ / shares	$ 29.73
Granted (in dollars per share) | $ / shares	34.36
Exercised (in dollars per share) | $ / shares	27.86
Expired, cancellations and forfeited (in dollars per share) | $ / shares	22.74
Ending balance, Outstanding at (in dollars per share) | $ / shares	30.65
Weighted Average Exercise Price, Exercisable at period end (in dollars per share) | $ / shares	$ 35.12
Average Remaining Contractual Term (in years), Outstanding period end	4 years 10 months 24 days
Average Remaining Contractual Term (in years), Exercisable at period end	4 years 3 months 18 days
Aggregate Intrinsic Value, Outstanding at period end | $	$ 37.1
Aggregate Intrinsic Value, Exercisable at period end | $	$ 10.9