Description of the Business, Basis of Presentation and Summary of Significant Accounting Policies - Stock-based Compensation (Details) - $ / shares	12 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Estimated fair value of stock options granted (in Dollars)	$ 8.04	$ 3.80	$ 6.99
Assumptions:
Expected dividend yield (percent)	1.80%	2.90%	1.90%
Expected stock price volatility (percent)	31.90%	30.20%	27.40%
Risk-free interest rate (percent)	0.90%	0.20%	1.30%
Expected life of options (in years)	5 years	4 years	5 years