Earnings Per Share - Schedule of Computation of EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Basic earnings per share:
Net income	$ 452,033	$ 385,085
Less: net income allocated to participating securities	1,654	1,560
Net income available to common shareholders	$ 450,379	$ 383,525
Basic weighted average common shares outstanding (in shares)	403,382	407,580
Basic earnings per share (in dollars per share)	$ 1.12	$ 0.94
Diluted earnings per share:
Net income	$ 452,033	$ 385,085
Less: net income allocated to participating securities	1,654	1,560
Net income available to common shareholders	$ 450,379	$ 383,525
Basic weighted average common shares outstanding (in shares)	403,382	407,580
Effect of dilutive securities - employee stock options (in shares)	7,114	6,709
Diluted weighted average common shares outstanding (in shares)	410,496	414,289
Diluted earnings per share (in dollars per share)	$ 1.10	$ 0.93