Income Taxes - Components of Income Before Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2020
Income before income taxes for continuing operations consists of the following components:
U.S. operations	$ 1,445,719	$ 1,221,690	$ 1,035,902
Foreign operations	53,049	66,059	22,389
Income before income taxes	$ 1,498,768	$ 1,287,749	$ 1,058,291