COMMON STOCK AND STOCK-BASED COMPENSATION - Weighted Average Assumptions Used to Estimate Fair Values (Details) - Stock options	12 Months Ended
	May 31, 2025	May 31, 2024	May 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	1.60%	1.20%	0.90%
Expected volatility	31.10%	29.30%	27.10%
Weighted average expected life (in years)	6 years	5 years 9 months 18 days	5 years 9 months 18 days
Risk-free interest rate	3.80%	4.30%	3.30%