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, 2024 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Beginning balance, Outstanding (in shares) | shares	3,188,401
Granted (Shares) | shares	272,252
Exercised (Shares) | shares	(445,032)
Expired, cancellations and forfeited (Shares) | shares	(70,522)
Ending balance, Outstanding (in shares) | shares	2,942,293
Exercisable (Shares) at May 31, 2016 | shares	2,008,543
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Beginning balance, Outstanding (in dollars per share) | $ / shares	$ 29.63
Granted (in dollars per share) | $ / shares	37.01
Exercised (in dollars per share) | $ / shares	25.18
Expired, cancellations and forfeited (in dollars per share) | $ / shares	29.33
Ending balance, Outstanding at (in dollars per share) | $ / shares	30.99
Weighted Average Exercise Price, Exercisable at period end (in dollars per share) | $ / shares	$ 30.78
Average Remaining Contractual Term (in years), Outstanding period end	3 years 10 months 24 days
Average Remaining Contractual Term (in years), Exercisable at period end	3 years 7 months 6 days
Aggregate Intrinsic Value, Outstanding at period end | $	$ 20.5
Aggregate Intrinsic Value, Exercisable at period end | $	$ 14.8