Stock-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2021
Share Based Compensation Arrangement Stock Options [Abstract]
Stock option vesting period range	one to four years
Restricted stock expiration period	ratably over four years
Stock-based compensation, key assumptions of valuation method	Black-Scholes
Maximum term of stock options	10 years
Restricted stock granted	160,286	115,172	335,004
Restricted stock, weighted-average fair value	$ 208.57	$ 276.26	$ 155.19
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Abstract
Total unrecognized compensation cost, net of estimated forfeitures	$ 230
Stock option remaining weighted average vesting period	2 years
Ratio Of Outstanding And Available To Grant Shares To Total Outstanding Common And Equity Compensation Shares And Equity Compensation Shares Available For Grant [Abstract]
Ratio Of Outstanding And Available To Grant Shares To Total Outstanding Common And Equity Compensation Shares And Equity Compensation Shares Available For Grant	11.00%