Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	May 31, 2022	May 31, 2021
Statement of Financial Position [Abstract]
Allowance on accounts receivable	$ 12,918	$ 12,097
Preferred stock, shares authorized (in shares)	100,000	100,000
Preferred stock, shares outstanding ( in shares)	0	0
Common stock, shares authorized (in shares)	425,000,000	425,000,000
Common stock, shares issued (in shares)	190,837,921	189,071,185
Common stock, shares outstanding (in shares)	101,711,215	104,061,391
Treasury stock, shares (in shares)	89,126,706	85,009,794