Earnings Per Share - Summary of Buyback Activity by Program (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Nov. 30, 2023	Aug. 31, 2023	Nov. 30, 2022	Aug. 31, 2022	Nov. 30, 2023	Nov. 30, 2022
Equity, Class of Treasury Stock [Line Items]
Stock purchased under share buyback	$ 349,852	$ 73,276	$ 28,348	$ 320,334	$ 423,128	$ 348,682
Shares acquired for taxes due (in shares)	58		56		203	326
Shares acquired for taxes due, average price (in dollars per share)	$ 518.89		$ 423.64		$ 507.61	$ 408.97
Shares acquired for taxes due	$ 29,586		$ 23,665		$ 102,862	$ 133,248
Share Buyback Programs
Equity, Class of Treasury Stock [Line Items]
Stock purchased under share buyback (in shares)	658		12		658	544
Stock purchased under share buyback, average price (in dollars per share)	$ 486.58		$ 377.66		$ 486.58	$ 395.97
Stock purchased under share buyback	$ 320,266		$ 4,683		$ 320,266	$ 215,434
July 27, 2021 Plan
Equity, Class of Treasury Stock [Line Items]
Stock purchased under share buyback (in shares)	658		12		658	544
Stock purchased under share buyback, average price (in dollars per share)	$ 486.58		$ 377.66		$ 486.58	$ 395.97
Stock purchased under share buyback	$ 320,266		$ 4,683		$ 320,266	$ 215,434
July 26, 2022 Plan
Equity, Class of Treasury Stock [Line Items]
Stock purchased under share buyback (in shares)	0		0		0	0
Stock purchased under share buyback, average price (in dollars per share)	$ 0		$ 0		$ 0	$ 0
Stock purchased under share buyback	$ 0		$ 0		$ 0	$ 0