Earnings Per Share - Schedule of Computation of EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Nov. 30, 2024	Aug. 31, 2024	Nov. 30, 2023	Aug. 31, 2023	Nov. 30, 2024	Nov. 30, 2023
Basic earnings per share:
Net income	$ 448,495	$ 452,033	$ 374,613	$ 385,085	$ 900,528	$ 759,698
Less: net income allocated to participating securities	1,585		1,460		3,182	2,957
Net income available to common shareholders	$ 446,910		$ 373,153		$ 897,346	$ 756,741
Basic weighted average common shares outstanding (in shares)	403,581		406,669		403,489	407,125
Basic earnings per share (in dollars per share)	$ 1.11		$ 0.92		$ 2.22	$ 1.86
Diluted earnings per share:
Net income	$ 448,495	$ 452,033	$ 374,613	$ 385,085	$ 900,528	$ 759,698
Less: net income allocated to participating securities	1,585		1,460		3,182	2,957
Net income available to common shareholders	$ 446,910		$ 373,153		$ 897,346	$ 756,741
Basic weighted average common shares outstanding (in shares)	403,581		406,669		403,489	407,125
Effect of dilutive securities - employee stock options (in shares)	7,086		6,397		7,124	6,548
Diluted weighted average common shares outstanding (in shares)	410,667		413,066		410,613	413,673
Diluted earnings per share (in dollars per share)	$ 1.09		$ 0.90		$ 2.19	$ 1.83